JP2018196535A - Standard denture base, standard denture, partial denture making kit and partial denture making method - Google Patents

Abstract

To provide a standard denture base or a standard denture for making a ready-made partial denture applicable to many patients, and simplify a partial denture making process.SOLUTION: A standard denture base 10 is made beforehand, and is characterized by having dividing mechanisms L1-L7 for dividing the standard denture base in a predetermined position, in which the denture is made by using the standard denture base. As a result, the need for adjusting a relative position of each dentition is lowered when making a partial denture with 2 or more teeth arranged therein, and thereby the time for making the partial denture can be shortened.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a standard denture base, a standard denture, a partial denture preparation kit, and a partial denture preparation method. More specifically, the present invention relates to a reference denture base having a divided guide, a reference denture, a partial denture preparation kit including the reference denture, and a partial denture preparation method for cutting and preparing a reference denture.

  In general, the shape of the oral cavity of an edentulous person differs in each individual in the size of the alveolar bone, the amount of bone absorbed, the state of the mucous membrane, and the like. Therefore, in order to produce a good denture, it is necessary to produce a denture from each individual model according to a conventionally known procedure, which takes a lot of time.

  In view of this, a standard denture with a standardized size has been proposed in order to easily produce a denture with good fit (Patent Document 1). By using this standardized standard denture and a relining material such as rebase, a suitable denture can be obtained in a short time only by performing a lining operation in the oral cavity without performing a technical operation using a plaster model. It is obtained with.

  On the other hand, the number of elderly people with residual teeth is increasing due to national movements such as the 8020 movement. Therefore, patients with partial dentures are increasing. The shape of the partial denture varies depending on the position of the missing tooth. For this reason, the conventional method for preparing partial dentures, like the preparation of edentulous complete dentures, requires the preparation of each individual model according to a conventionally known procedure, which requires a lot of time for preparation. Is needed.

  Here, when applying the standard denture as a preparation method of the complete denture shown in Patent Document 1 to a partial denture, a partial floor having a form corresponding to a patient's individual defect must be prepared. Will be enormous.

JP2015-165850A

  An object of the present invention is to provide a reference denture base and a reference denture for producing a ready-made partial denture that can be adapted to many patients. Moreover, it is in using the partial denture preparation kit which consists of this reference | standard denture base or a reference denture, and a lining material, simplifying the preparation process of a partial denture, and shortening the preparation time of a denture.

  In order to solve the above-mentioned problems, the present inventors divided a ready-made reference denture base or a reference denture whose shape is defined based on the oral shape of a toothed person and an edentulous person to obtain a partial denture. I came up with a method to make it. It has been found that the partial floor reference dentures thus produced are applicable to many patients. Moreover, in order to divide this ready-made reference denture base or reference denture quickly in a fixed shape, it has been conceived to form a dividing mechanism on the reference denture base or reference denture. Furthermore, by using the denture preparation kit comprising the reference denture base or the reference denture, it has been found that the preparation process of the partial denture can be simplified and that a partial denture with a high matching rate can be prepared. The invention has been completed.

  The present invention for solving the above-described problems is as described below. In addition, in this-application specification, a reference | standard denture base is a denture base which is a ready-made denture base and the artificial tooth is not arranged. The reference denture refers to one or more artificial teeth arranged in advance on the reference denture base. In particular, a reference denture in which all the dentitions are arranged is referred to as a floor standard denture, and a reference denture in which a part of the dentition is arranged is referred to as a partial denture. The total dentition means a dentition including 14 teeth from the left second molar to the right second molar.

  [1] A reference denture base which is a reference denture base prepared in advance and has a dividing mechanism for dividing the reference denture base at a predetermined position.

  This reference denture base is a reference denture base that is a base for dividing a partial dentition to produce a partial base reference denture.

  [2] The standard denture base according to [1], wherein the dividing mechanism is a recess formed in the standard denture base.

  The reference denture base has a recess as a dividing mechanism. The reference denture base can be divided along the recess.

  [3] The reference denture base according to [2], wherein the formation position of the recess is on the ridge contact surface side of the reference denture base.

  In this reference denture base, the concave portion is formed on the side of the ridge contact surface, that is, on the back side of the reference denture base.

  [4] The standard denture base according to [1], wherein the dividing mechanism is a plurality of through holes formed in the standard denture base.

  The reference denture base has a plurality of through holes as a dividing mechanism. The reference denture base can be divided along the plurality of through holes.

  [5] The standard denture base according to [4], wherein the length of the opening of the through hole in the longitudinal direction is 0.5 to 20 mm.

  In this reference denture base, the opening of each through hole has a size within a predetermined range.

[6] The dividing mechanism is a perforated broken line formed by connecting a plurality of the through holes.
In the reference denture base according to [4], the broken line is formed with a cut portion having a total length of 0.1 to 40% with respect to the entire length on the ridge contact surface side.

  The reference denture base is a plurality of through holes in which the dividing mechanism is formed in a perforation shape, and the perforations are formed at a predetermined pitch.

  [7] The reference denture base according to [1], wherein the division mechanism is a division mechanism formed so that the artificial teeth arranged on the reference denture base can be divided for each dentition.

  The reference denture base is configured such that the reference denture base can be divided for each artificial tooth. That is, in the case of a standard denture base that constitutes a full base standard denture in which 14 teeth are arranged, it is divided into 14 pieces.

[8] a standard denture base according to
Artificial teeth arranged in the standard denture base,
A standard denture consisting of

  This reference denture is a reference denture that becomes a base for dividing a partial dentition to produce a partial floor reference denture. This reference denture may be a complete floor reference denture or a partial floor reference denture.

[9] A standard denture base according to [1],
Lining materials,
Artificial teeth,
A partial denture preparation kit comprising:

  This partial denture preparation kit divides the denture base of the dentition portion corresponding to the missing tooth from the reference denture base described in [1] above, and arranges artificial teeth on this to build up the lining material A kit for preparing a partial denture.

[10] A standard denture base according to [1],
Lining materials,
Artificial teeth,
A partial denture preparation kit comprising:

  This partial denture preparation kit divides the denture base of the dentition portion corresponding to the missing tooth from the reference denture base described in [1] above, and arranges artificial teeth on this to build up the lining material A kit for preparing a partial denture.

[11] dividing the standard denture base;
Arranging artificial teeth on the divided standard denture base;
Building a lining material on the divided standard denture base;
A method for preparing a partial denture, comprising:

  This partial denture preparation method divides the standard denture base of the dentition part corresponding to the missing tooth from the standard denture base, prepares the partial denture by arranging artificial teeth on this and building up the lining material It is a method to do.

[12] dividing the standard denture;
Building a lining material on the divided standard denture;
A method for preparing a partial denture, comprising:

  This partial denture preparation method is a method of preparing a partial denture by dividing a dentition portion corresponding to a missing tooth from a reference denture and building up a lining material thereon.

Since the reference denture base and the reference denture according to the present invention have a dividing mechanism for dividing the reference denture base, the basic shape of the partial denture can be produced in a short time. Therefore, the production time of the partial denture can be shortened.
Since the partial denture preparation kit of the present invention includes the reference denture base or the reference denture, the basic shape of the partial denture can be easily obtained in a short time. A partial denture corresponding to a patient's missing tooth can be easily produced simply by arranging artificial teeth as necessary with respect to the basic shape of the partial denture and building up a lining material.
The partial denture preparation method of the present invention uses a ready-made reference denture base in which the position of each dentition is defined in advance. Therefore, when producing a partial denture in which two or more teeth are arranged, the necessity of adjusting the relative position of each dentition is reduced. As a result, the production time of the partial denture can be shortened.
Thereby, the burden of a dentist, a dental technician, and a patient can be reduced significantly.

FIG. 1 is a side view of a reference denture (for maxilla) according to the present invention. FIG. 2 is a plan view of the reference denture of the present invention (for maxilla) viewed from the direction in which the artificial teeth are arranged. FIG. 3 is a plan view of the opposite side of FIG. FIG. 4 is a side view of the reference denture (for lower jaw) of the present invention. FIG. 5 is a plan view of the reference denture (for lower jaw) according to the present invention as seen from the direction in which the artificial teeth are arranged. FIG. 6 is a plan view of the opposite side of FIG. FIG. 7 is an explanatory diagram illustrating an example of a dividing mechanism. FIG. 8 is a plan view showing the shape of the upper standard denture base. FIG. 9 is a plan view showing the positions of the artificial teeth arranged on the upper standard denture base. FIG. 10 is a plan view showing an example of an upper denture. FIG. 11 is a plan view showing the shape of the mandibular reference denture base. FIG. 12 is a plan view showing the positions of the artificial teeth arranged on the mandibular reference denture base. FIG. 13 is a plan view showing an example of a lower denture.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view of a reference denture (for maxilla) according to the present invention. Since the reference denture of the present invention is substantially symmetric, the side view on the opposite side and the description thereof are omitted. In FIG. 1, 100 is the upper standard denture of the present invention, and 10 is the upper standard denture base of the present invention. The point O is a point corresponding to the upper lip band corresponding to the middle of the lip side floor edge, and the point P is a point corresponding to the left wing protrusion maxillary notch of the floor rear edge. In the upper standard denture base 10, middle incisors 11, side incisors 12, canines 13, first premolars 14, second premolars 15, first molars 16, and second molars 17 are arranged. The upper jaw standard denture base 10 is formed with a dividing mechanism so that it can be divided for each artificial tooth. L1 is a line for dividing at the interdental portion between the right central incisor (not shown) and the left central incisor 11, and L2 is divided at the interdental portion between the central incisor 11 and the side incisor 12. L3 is a line for dividing at the interdental portion between the side incisors 12 and the canine teeth 13, and L4 is a line for dividing at the interdental portion between the canine teeth 13 and the first premolar teeth 14. Yes, L5 is a line for dividing at the interdental portion between the first premolar 14 and the second premolar 15, and L6 is divided at the interproximal portion between the second premolar 15 and the first molar 16 L7 is a line for dividing at the interdental portion between the first molar 16 and the second molar 17. These lines are formed by a line in which a plurality of recesses are connected in the drawing.

  FIG. 2 is a plan view of the reference denture of the present invention (for maxilla) as seen from the direction in which the artificial teeth are arranged, and FIG. 3 is a plan view on the opposite side of FIG. The same components as those in FIG. 1 are denoted by the same reference numerals and description thereof is omitted. In FIG. 2, 14 artificial teeth are arranged, and the reference denture is formed so as to be divided into 14 for each artificial tooth along lines L1 to L7. For example, when a partial denture for the canine 13 is produced, the canine 13 and the associated standard denture base can be extracted by dividing the reference denture along the lines L3 and L4. Further, for example, when preparing a partial denture of the canine 13 and the first premolar 14, by dividing the reference denture along the lines L3 and L5, the canine 13, the first premolar 14, and The accompanying standard denture base can be extracted. In this case, the line L4 remains on the reference denture. Thus, the basic shape of the partial denture can be produced in a short time by dividing along any of the lines L1 to L7.

  FIG. 4 is a side view of the reference denture (for lower jaw) of the present invention. Since the reference denture of the present invention is substantially symmetric, the side view on the opposite side and the description thereof are omitted. In FIG. 4, 200 is a mandibular standard denture, and 20 is a mandibular standard denture base. The point o is a point corresponding to the lower lip band corresponding to the center of the lip side floor edge. The point p is a point corresponding to the left posterior bulge on the rear edge of the floor. In the mandibular reference denture base 20, a central incisor 21, a side incisor 22, a canine 23, a first premolar 24, a second premolar 25, a first premolar 26, and a second premolar 27 are arranged. The lower jaw standard denture base 20 is formed with a dividing mechanism so that it can be divided for each artificial tooth. J1 is a line for dividing at the interdental portion between the right central incisor (not shown) and the left central incisor 21, and J2 is divided at the interdental portion between the central incisor 21 and the side incisors 22. J3 is a line for dividing at the interdental portion between the side incisor 22 and the canine 23, and J4 is a line for dividing at the interdental portion between the canine 23 and the first premolar 24 Yes, J5 is a line for dividing at the interdental portion between the first premolar 24 and the second premolar 25, and J6 is divided at the interdental portion between the second premolar 25 and the first molar 26 J7 is a line for dividing at the interdental portion between the first molar 26 and the second molar 27. These lines are formed by a line in which a plurality of recesses are connected in the drawing.

  FIG. 5 is a plan view of the reference denture of the present invention (for lower jaw) as seen from the direction in which the artificial teeth are arranged, and FIG. 6 is a plan view on the opposite side of FIG. The same components as those in FIG. 4 are denoted by the same reference numerals, and description thereof is omitted. In FIG. 5, 14 artificial teeth are arranged, and the reference denture is formed so as to be divided into 14 pieces for each artificial tooth along lines J1 to J7. The structure of the dividing mechanism is the same as that of the standard denture for the upper jaw.

In FIGS. 1-6, although the line | wire with which the several recessed part was continued was illustrated as a division mechanism, the division mechanism in this invention is not limited to this. FIG. 7 is an explanatory diagram illustrating an example of a dividing mechanism. FIG. 7A shows a dividing mechanism in which a plurality of recesses are linearly connected, and the recesses do not penetrate in the thickness direction. FIG. 7B shows a dividing mechanism in which a plurality of through holes penetrating in the thickness direction are linearly connected. FIG. 7C shows a dividing mechanism formed by slits penetrating in the thickness direction. FIG. 7D shows a dividing mechanism in which the grooves are formed in a linear shape. In the present invention, the dividing mechanism is not limited to these, and any dividing mechanism can be adopted. Moreover, the line may be formed only by printing or the like.
In order to quickly divide the partial denture from the reference denture, it is preferable to use a dividing mechanism in which a plurality of recesses are connected in a line or a dividing mechanism in which a plurality of through holes are broken lines connected in a perforation.
Such a dividing mechanism may be formed on the front side of the standard denture base (that is, the side on which the artificial teeth are arranged), or may be formed on the back side (that is, the side of the ridge contact surface). It may be formed.

  In the case of a dividing mechanism in which a plurality of recesses are linearly connected, or in the case of a dividing mechanism in which a groove is formed in a linear shape, the recesses and grooves are preferably formed only on the back side of the reference denture base. As described above, the division mechanism that has not been used remains in the partial denture in which a plurality of artificial teeth are arranged. By forming this dividing mechanism on the ridge contact surface side, the aesthetics of the partial denture can be enhanced. Further, by filling the remaining concave portion or the like with the lining material, the bondability between the partial floor reference denture and the lining material can be enhanced.

  In the case of a dividing mechanism in which a plurality of through holes are connected in a perforated pattern, the shape of the through holes is not particularly limited, but the length in the longitudinal direction of the opening is preferably 0.5 to 20 mm. It is more preferably ˜15 mm, and particularly preferably 3 to 10 mm. If the thickness is less than 0.5 mm, a large number of through holes must be formed in order to easily divide the structure, and the manufacture of the standard denture base becomes complicated. When it exceeds 20 mm, the strength of the standard denture base is likely to be reduced, and it may be divided at an unintended portion.

  It is preferable that the broken line connected in the above-described perforated shape is formed with a cut portion having a total length of 0.1 to 40% with respect to the total length of the broken line on the ridge contact surface side, It is more preferably 35%, and particularly preferably 10 to 30%. If it is less than 0.1%, a large number of through-holes must be formed in order to easily divide the structure, and the manufacture of the standard denture base becomes complicated. When it exceeds 40%, the strength of the standard denture base tends to be lowered, and it may be divided at an unintended portion.

  In FIG. 1, the dividing mechanism is formed such that each artificial tooth can be divided for each dentition. However, the present invention is not limited thereto, and only some artificial teeth may be formed so as to be divided. However, since the number of dentitions and combinations of dentitions to be subjected to partial dentures are different for each patient, the dividing mechanism is preferably formed so that each artificial tooth can be divided for each dentition.

In the above description, the case where all the base standard dentures are floor standard dentures has been described. However, the reference dentures as a base in the present invention are not limited to the floor reference dentures, but may be a partial base reference denture from a central incisor to a canine, for example.

In the reference denture base or the reference denture according to the present invention, the reference denture base preferably has a predetermined shape described below. Moreover, it is preferable that the reference | standard denture base of this invention is formed with the guide which shows the arrangement position of an artificial tooth in the predetermined position demonstrated below.
In the reference denture of the present invention, it is preferable that the artificial teeth are arranged at predetermined positions described below.

(Maxillary standard denture base)
FIG. 8 is a plan view showing an example of the shape of the reference denture base 10 in the upper reference denture 100 of the present invention. In FIG. 8, the point O is a point corresponding to the upper lip band corresponding to the middle of the lip side floor edge. Point P is a point corresponding to the left wing protrusion maxillary notch on the floor trailing edge, and point Q is a point corresponding to the right wing protrusion maxillary notch on the floor trailing edge. Point M is the midpoint of line segment PQ connecting points P and Q. In this reference denture base, when the length of the line segment PQ is 1, the length of the line segment OM connecting the point O and the point M is in the range of 0.76 to 0.98. It is preferably in the range of 0.93, and more preferably in the range of 0.86 to 0.88. The upper standard denture base having this shape can be adapted to many edentulous people by building up the lining material. Partial dentures made based on this upper standard denture can also be adapted to many patients. Note that the right and left of the upper standard denture base are the left and right when attached to the patient, and are reversed to the left and right on the paper surface.

  In FIG. 8, points P1 to P3 are points that divide the line segment OP into four equal parts. That is, the lengths of the line segment OP1, the line segment P1P2, the line segment P2P3, and the line segment P3P are equal. Points D <b> 1 to D <b> 3 are points where a vertical line with respect to the line segment OP from each of the points P <b> 1 to P <b> 3 intersects the left cheek floor edge 50. Points Q1 to Q3 are points that divide the line segment OQ into four equal parts. That is, the lengths of the line segment OQ1, the line segment Q1Q2, the line segment Q2Q3, and the line segment Q3Q are equal. Points E1 to E3 are points where a vertical line with respect to the line segment OQ from each of the points Q1 to Q3 intersects the right cheek floor edge 51.

  As for the shape of the upper standard denture base, when the length of the line segment PQ is 1, the lengths of the line segment P1D1 and the line segment Q1E1 are preferably in the range of 0.11 to 0.36, respectively. A range of 16 to 0.31 is more preferable, and a range of 0.21 to 0.26 is particularly preferable. The lengths of the line segment P2D2 and the line segment Q2E2 are each preferably in the range of 0.19 to 0.45, more preferably in the range of 0.24 to 0.40, and 0.29 to A range of 0.35 is particularly preferable. Furthermore, the lengths of the line segment P3D3 and the line segment Q3E3 are each preferably in the range of 0.16 to 0.45, more preferably in the range of 0.21 to 0.40, and 0.26 to A range of 0.35 is particularly preferable. An upper standard denture base having this shape or a partial denture made based on an upper standard denture can be adapted to many patients.

  FIG. 9 is an explanatory diagram showing the positions of the artificial teeth arranged in the upper standard denture of the present invention. FIG. 10 is a plan view showing an example of a maxillary reference denture in which all artificial teeth are arranged on the maxillary reference denture base. In FIG. 10, 11 is a maxillary central incisor (No. 1), and 11a is an interdental portion between the left maxillary central incisor and the right maxillary central incisor. 12 is a maxillary incisor (No. 2), and 12a is a mesial angle incision edge of the maxillary incisor. Reference numeral 13 denotes a maxillary canine (No. 3), and reference numeral 13a denotes a peak of the maxillary canine. Reference numeral 14 denotes an upper first premolar (No. 4), and reference numeral 14a denotes an intersection of a central groove and a central occlusal ridge in the upper first premolar. 15 is a maxillary second premolar (No. 5), and 15a is an intersection of a central groove and a central occlusal ridge in the maxillary second premolar. 16 is the maxillary first molar (No. 6), and 16a is the central fovea of the maxillary first molar. 17 is a maxillary second molar (No. 7), and 17a is a central fovea of the maxillary second molar.

(Arrangement of artificial teeth in the upper standard denture base)
(A) Arrangement position of left first maxillary first molar (upper left 6th) The point S6 is on the line OP with the length of the line PQ being 1, and is at a distance of 0.74 from the point O. The point T6 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.74 from the point O. The left upper first molar is on a line perpendicular to the line segment OP from the point S6 to the left buccal floor edge 50 and has a center point at a distance of 0.11 from the point S6 to the left buccal floor edge 50. It is preferably arranged so that the fovea of the left upper first molar is located within a circle with a radius of 0.14, and particularly preferably within a circle with a radius of 0.08.

(B) Arrangement position of right upper first molar (upper right No. 6) Similarly, the right upper first molar is on a line perpendicular to the line segment OQ from the point T6 to the right buccal floor edge 51 side. It is preferable that the central fovea of the right upper first molar is located in a circle having a radius of 0.14 having a center point at a distance of 0.11 from T6 to the right cheek floor edge 51 side, It is particularly preferable to be within a circle with a radius of 0.08.

(C) Arrangement position of maxillary central incisors (upper no. 1) The maxillary central incisors are on the straight line OM and at a distance of 0.76 to 1.14 from the point M to the lip side on the left upper central incisors and the right It arranges so that it may have an interdental part with a maxillary central incisor.
The left maxillary central incisor has a length of the line segment PQ of 1, the circumference is in contact with a point U1 on the straight line OM and a distance of 0.76 to 1.14 from the point M to the lip side. Arranged so that the incision nodule at the center of the left central incisor is located in a circle having a diameter of 0.17 on the straight line OM perpendicular to the straight line OM and having a center point on the left cheek floor edge 50 side. The distance from the point M to the point U1 is more preferably 0.86 to 1.04, and particularly preferably 0.91 to 0.99.
Similarly, the right middle incisor is a straight line that is on the straight line OM and is in contact with the point U1 at a distance of 0.76 to 1.14 from the point M to the lip side, and is perpendicular to the straight line OM at the point U1. It is preferably arranged so that the central incisal nodule of the right middle incisor is located in a circle having a diameter of 0.17 and having a center point on the right cheek floor edge 51 side. The point U1 is more preferably a distance of 0.86 to 1.04, and particularly preferably a distance of 0.91 to 0.99. Moreover, it is preferable that the left upper central incisor and the right upper central incisor are arranged symmetrically with respect to the straight line OM.

(D) Arrangement position of left upper canine tooth (upper left third) The point S3 is on the line OP with the length of the line PQ being 1, and is at a distance of 0.30 from the point O. The point T3 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.30 from the point O. The left maxillary canine is on a line perpendicular to the line segment OP from the point S3 to the left buccal floor edge 50, and has a radius of 0. 0 with a center point at a distance of 0.25 from the point S3 to the left buccal floor edge 50. It is preferable that the left maxillary canine cusp is arranged so as to be located within 12 circles, and particularly preferably within a circle having a radius of 0.07.

(E) Arrangement position of right upper canine (upper right third) Similarly, the right upper canine is on the vertical line with respect to the line segment OQ from the point T3 to the right buccal floor edge 51 and from the point T3 to the right buccal floor It is preferably arranged so that the tip of the right maxillary canine is located in a circle with a radius of 0.12 having a center point at a distance of 0.25 on the edge 51 side, and within the circle with a radius of 0.07 It is particularly preferred.

(F) Arrangement position of left first maxillary first premolar (upper left 4th point) The point S4 is on the line segment OP with the length of the line segment PQ being 1, and is at a distance of 0.44 from the point O. The point T4 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.44 from the point O. The left upper first premolar is on the vertical line with respect to the line segment OP from the point S4 to the left buccal floor edge 50 and has a center point at a distance of 0.24 from the point S4 to the left buccal floor edge 50. It is preferably arranged so that the intersection of the central groove and the central occlusal ridge is located within a circle with a radius of 0.13, and particularly preferably within a circle with a radius of 0.08.

(G) Arrangement position of right upper first premolar (upper right 4) Similarly, the right upper first premolar is on the vertical line with respect to the line segment OQ from the point T4 to the right buccal floor edge 51 side. Arranged so that the intersection of the central groove and the central occlusal ridge is located within a circle with a radius of 0.13 having a central point at a distance of 0.24 from T4 to the right cheek floor edge 51 side. Is preferable, and is particularly preferably within a circle having a radius of 0.08.

(H) Arrangement position of left upper maxillary second premolar (upper left fifth) Point S5 has a length of line PQ of 1, is on line OP, and is a distance of 0.58 from point O. The point T5 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.58 from the point O. The left upper maxillary second premolar is on the vertical line with respect to the line segment OP from the point S5 to the left buccal floor edge 50 and has a center point at a distance of 0.19 from the point S5 to the left buccal floor edge 50. It is preferably arranged so that the intersection of the central groove and the central occlusal ridge is located within a circle with a radius of 0.13, and particularly preferably within a circle with a radius of 0.08.

(I) Arrangement position of right upper second premolar (upper right No. 5) Similarly, the right upper second premolar is on the vertical line with respect to the line segment OQ from the point T5 to the right buccal floor edge 51 side. Arranged so that the intersection of the central groove and the central occlusal ridge is located within a circle with a radius of 0.13 having a central point at a distance of 0.19 from T5 to the right cheek floor edge 51 side. Is preferable, and is particularly preferably within a circle having a radius of 0.08.

(J) Arrangement Position of Left Maxillary Second Molar (Upper Left No. 7) Point S7 is on the line segment OP with the length of the line segment PQ being 1, and is at a distance of 0.90 from the point O. The point T7 has a length of the line segment PQ of 1, is on the line segment OQ, and is at a distance of 0.90 from the point O. The left upper maxillary second molar is on the vertical line with respect to the line segment OP from the point S7 to the left buccal floor edge 50 and has a center point at a distance of 0.08 from the point S7 to the left buccal floor edge 50. It is preferable that the fovea is arranged in a circle having a radius of 0.12, and it is particularly preferable that the fovea is in a circle having a radius of 0.08.

(K) Arrangement position of right maxillary second molar (upper right No. 7) Similarly, the right maxillary second molar is on the vertical line with respect to the line segment OQ from the point T7 to the right buccal floor edge 51 side. It is preferably arranged so that the fovea is located within a circle with a radius of 0.12 having a center point at a distance of 0.08 from the T7 to the right cheek floor edge 51 side. It is particularly preferred that

(L) Arrangement position of left maxillary incisor (upper left second) The point S2 is on the line OP with the length of the line PQ being 1, and is 0.12 from the point O. The point T2 has a length of the line segment PQ of 1, is on the line segment OQ, and is a distance of 0.12 from the point O. The left maxillary incisor is on a line perpendicular to the line segment OP from the point S2 to the left cheek floor edge 50 and has a center point at a distance of 0.14 from the point S2 to the left cheek floor edge 50. It is preferably arranged so that the mesial corner cutting edge is located within a circle of 0.11, and particularly preferably within a circle of radius 0.08.

(M) Arrangement position of right maxillary incisor (upper right No. 2) Similarly, the right maxillary incisor is on the vertical line from the point T2 to the line segment OQ from the point T2 to the right cheek floor edge 51 side. It is preferably arranged so that its mesial corner cut edge is located in a circle having a radius of 0.11 and having a center point at a distance of 0.14 on the right cheek floor edge 51 side. It is particularly preferable that it is within a circle.

(Mandibular standard denture base)
FIG. 11 is a plan view showing an example of the shape of the reference denture base 20 in the lower reference denture 200 of the present invention. In FIG. 11, point o is a point corresponding to a lower lip band corresponding to the middle of the lip side floor edge. The point p is a point corresponding to the left posterior bulge on the floor rear edge, and the point q is a point corresponding to the right posterior ridge on the floor rear edge. Point m is the midpoint of line segment pq connecting points p and q. In the lower denture base denture base, when the length of the line segment pq is 1, the length of the line segment om connecting the point o and the point m is in the range of 0.76 to 0.94, 0.80 It is preferably in the range of ˜0.90, and more preferably in the range of 0.84 to 0.86.

  In FIG. 11, points p1 to p3 are points that divide the line segment op into four equal parts. That is, the lengths of the line segment op1, the line segment p1p2, the line segment p2p3, and the line segment p3p are equal. Points d <b> 1 to d <b> 3 are points where a vertical line with respect to the line segment op from each of the points p <b> 1 to p <b> 3 intersects the left cheek floor edge 52. Points q1 to q3 are points that divide the line segment oq into four equal parts. That is, the lengths of the line segment oq1, the line segment q1q2, the line segment q2q3, and the line segment q3q are equal. Points e1 to e3 are points where a vertical line with respect to the line segment oq from each of the points q1 to q3 intersects the right cheek floor edge 53.

  In the mandibular standard denture base, when the length of the line segment pq is 1, the lengths of the line segment p1d1 and the line segment q1e1 are preferably in the range of 0.11 to 0.32, respectively. A range of 0.28 is more preferable, and a range of 0.19 to 0.24 is particularly preferable. The lengths of the line segment p2d2 and the line segment q2e2 are each preferably in the range of 0.13 to 0.34, more preferably in the range of 0.17 to 0.30, A range of 0.26 is particularly preferable. Furthermore, the lengths of the line segment p3d3 and the line segment q3e3 are each preferably in the range of 0.14 to 0.33, more preferably in the range of 0.18 to 0.29. A range of 0.25 is particularly preferable. A mandibular reference denture having this shape or a partial denture made on the basis of a mandibular reference denture can be adapted to many patients.

  In FIG. 11, points b <b> 1 to b <b> 3 are points where a vertical line with respect to the line segment op from each of the points p <b> 1 to p <b> 3 intersects the lingual floor edge. Points c1 to c3 are points where a vertical line with respect to the line segment oq from each of the points q1 to q3 intersects the lingual floor edge.

  In the mandibular standard denture base, when the length of the line segment pq is 1, the lengths of the line segment d1b1 and the line segment e1c1 are preferably in the range of 0.14 to 0.40, preferably 0.19 to A range of 0.35 is more preferable, and a range of 0.24 to 0.30 is particularly preferable. The lengths of the line segment d2b2 and the line segment e2c2 are each preferably in the range of 0.19 to 0.41, more preferably in the range of 0.24 to 0.36, and 0.29 to A range of 0.31 is particularly preferable. Furthermore, the lengths of the line segment d3b3 and the line segment e3c3 are each preferably in the range of 0.21 to 0.42, more preferably in the range of 0.25 to 0.38, and 0.30 to 0.30. A range of 0.34 is particularly preferable. A partial denture made based on a mandibular reference denture having this shape can be adapted to many patients.

  FIG. 12 is an explanatory diagram showing the positions of the artificial teeth arranged on the lower jaw reference denture of the present invention. FIG. 13 is a plan view showing an example of a mandibular reference denture in which all artificial teeth are arranged. In FIG. 13, 21 is a mandibular central incisor (No. 1), and 21a is an interdental portion between the left mandibular central incisor and the right mandibular central incisor. Reference numeral 22 denotes a mandibular incisor (No. 2), and 22a denotes a mesial angle incision edge of the mandibular incisor. Reference numeral 23 denotes a lower jaw canine (No. 3), and reference numeral 23a denotes a point of the lower jaw canine. Reference numeral 24 denotes a mandibular first premolar (No. 4), and 24a denotes an intersection of a central groove and a central occlusal ridge in the mandibular first premolar. 25 is a mandibular second premolar (No. 5), and 25a is an intersection of a central groove and a central occlusal ridge in the mandibular second premolar. Reference numeral 26 denotes a lower first molar (No. 6), and reference numeral 26a denotes a central fovea of the lower first molar. 27 is the mandibular second molar (No. 7), and 27a is the central fovea of the mandibular second molar.

(Arrangement of artificial teeth in the mandibular standard denture base)
(N) Arrangement position of left first lower first molar (lower left sixth) Point s6 has a length of line segment pq of 1, is on line segment op, and is a distance of 0.65 from point o. The point t6 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.65 from the point o. The left lower first molar (6th lower left) is on a vertical line with respect to the line segment op from the point s6 to the left buccal floor edge 52 side, and is a distance of 0.08 from the point s6 to the left buccal floor edge 52 side. It is preferable that the central fovea of the left first molar is located within a circle having a center point of 0.12 and having a radius of 0.02, particularly preferably within a circle having a radius of 0.08.

(O) Arrangement position of right lower first molar (No. 6 lower right) Similarly, the right lower first molar is on the vertical line with respect to the line segment oq from the point t6 to the right buccal floor edge 53 side. It is arranged that the central fovea of the right lower first molar is located within a circle having a radius of 0.12 having a center point at a distance of 0.08 from the point t6 to the right buccal floor edge 53 side. It is particularly preferable that it is within a circle having a radius of 0.08.

(P) Arrangement position of mandibular central incisor (bottom No. 1) The mandibular central incisor is on the straight line om and at a distance of 0.74 to 0.94 from the point m to the lip side on the left mandibular central incisor and right side It arranges so that it may have an interdental part with a mandibular central incisor.
The left mandibular central incisor has a length of the line segment pq of 1, the circumference is in contact with a point u1 on the straight line om and at a distance of 0.74 to 0.94 from the point m to the lip side. Arranged so that the central incisal nodule of the left central incisor is located in a circle having a diameter of 0.12 on u1 and having a central point on the left cheek floor edge 52 side. The distance from the point m to the point u1 is more preferably 0.79 to 0.89, and particularly preferably 0.83 to 0.85.
Similarly, the right mandibular central incisor has a length of the line segment pq of 1, and the circumference is in contact with a point u1 on the straight line om and at a distance of 0.74 to 0.94 from the point m to the lip side. At the same time, the central edge of the right central incisor is located in a circle having a diameter of 0.12 which is on a straight line orthogonal to the straight line om at the point u1 and has a central point on the right cheek floor edge 53 side. Arrangement is preferred, and the distance from point m to point u1 is more preferably from 0.79 to 0.89, and particularly preferably from 0.83 to 0.85.
The left lower central incisor and the right lower central incisor are preferably arranged symmetrically with respect to the straight line om.

(Q) Arrangement position of left lower canine tooth (lower left third) The point s3 is on the line segment op with the length of the line segment pq being 1, and is at a distance of 0.23 from the point o. The point t3 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.23 from the point o. The left mandibular canine is on a line perpendicular to the line op from the point s3 to the left buccal floor edge 52, and has a radius of 0. 0 with a center point at a distance of 0.17 from the point s3 to the left buccal floor edge 52. It is preferable that the left mandibular canine cusp is arranged so as to be located within the eleven circle, and particularly preferably within a circle having a radius of 0.08.

(R) Arrangement position of right mandibular canine (lower right third) Similarly, the right mandibular canine is on the vertical line with respect to the line segment oq from the point t3 to the right buccal floor edge 53 side and from the point t3 to the right buccal side It is preferable that the cusp of the right lower jaw canine is located in a circle having a radius of 0.11 having a center point at a distance of 0.17 on the floor edge 53 side, and within the circle having a radius of 0.08. It is particularly preferred that

(S) Arrangement Position of Left Lower Mandibular First Premolar (Left Lower 4th) Point s4 is on the line segment op with the length of the line segment pq being 1, and is at a distance of 0.38 from the point o. The point t4 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.38 from the point o. The left lower first bicuspid is centered at a distance of 0.15 from the point s4 to the left buccal floor edge 52 on the vertical line to the line op from the point s4 to the left buccal floor edge 52 side. It is preferably arranged so that the intersection of the central groove and the central occlusal ridge is located within a circle with a radius of 0.12, and particularly preferably within a circle with a radius of 0.08.

(T) Arrangement Position of Right Lower Mandibular First Premolar (Right Lower No. 4) Similarly, the right lower first bicuspid is on the vertical line with respect to the line segment oq from the point t4 to the right buccal floor edge 53 side. Arranged so that the intersection of the central groove and the central occlusal surface ridge is located within a circle having a radius of 0.13 having a center point at a distance of 0.15 from the point t4 to the right cheek floor edge 53 side. It is particularly preferable that it is within a circle having a radius of 0.08.

(U) Arrangement Position of Left Lower Mandibular Second Premolar (No. 5 at Lower Left) Point s5 has a length of line segment pq of 1, is on line segment op, and is at a distance of 0.50 from point o. The point t5 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.50 from the point o. The left mandibular second premolar has a center point at a distance of 0.14 from the point s5 to the left buccal floor edge 52 side and perpendicular to the line op to the left buccal floor edge 52 side. It is preferably arranged so that the intersection of the central groove and the central occlusal ridge is located within a circle with a radius of 0.12, and particularly preferably within a circle with a radius of 0.08.

(V) Arrangement position of right lower second premolar (lower right No. 5) Similarly, the right lower second premolar is on the vertical line with respect to the line segment oq from the point t5 to the right buccal floor edge 51 side. Arranged so that the intersection of the central groove and the central occlusal surface ridge is located within a circle having a radius of 0.12 having a central point at a distance of 0.14 from the point t5 to the right cheek floor edge 53 side. It is particularly preferable that it is within a circle having a radius of 0.08.

(W) Arrangement position of left lower second molar (left lower 7th) The point s7 is on the line op with the length of the line segment pq being 1, and is 0.82 from the point o. The point t7 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.82 from the point o. The left lower mandibular second molar has a center point at a distance of 0.08 from the point s7 to the left buccal floor edge 50 side and perpendicular to the line op to the left buccal floor edge 50 side. It is preferable that the fovea is arranged in a circle having a radius of 0.12, and it is particularly preferable that the fovea is in a circle having a radius of 0.08.

(X) Arrangement position of the right lower second molar (the lower right No. 7) Similarly, the right lower second molar is on the vertical line with respect to the line segment oq from the point t7 to the right buccal floor edge 51 side. It is preferably arranged so that its fovea is located in a circle with a radius of 0.12 having a center point at a distance of 0.08 from the point t7 to the right cheek floor edge 51 side. It is particularly preferable that it is within a circle.

(Y) Arrangement Position of Left Mandibular Incisor (Lower Left No. 2) Point s2 has a length of line segment pq of 1, is on line segment op, and is a distance of 0.08 from point o. The point t2 has a length of the line segment pq of 1, is on the line segment oq, and is at a distance of 0.08 from the point o. The left mandibular incisor is on a line perpendicular to the line op from the point s2 to the left buccal floor edge 50 and has a center point at a distance of 0.10 from the point s2 to the left buccal floor edge 50. It is preferably arranged so that the mesial corner cutting edge is located within a circle of 0.10, and particularly preferably within a circle of radius 0.08.

(Z) Arrangement Position of Right Mandibular Incisor (Right Bottom No. 2) Similarly, the right mandibular side incisor is on the vertical line with respect to the line segment oq from the point t2 to the right cheek floor edge 51 side, and the point t2 It is preferably arranged so that the mesial corner cutting edge is located in a circle with a radius of 0.10 having a center point at a distance of 0.10 from the right cheek floor edge 51 to a radius of 0.08. It is particularly preferable that it is within the circle.

  As a guide indicating the arrangement position of the artificial tooth, a method of forming a through hole for arranging the artificial tooth on the reference denture base, a method of providing a concave portion corresponding to the shape of the artificial tooth, a concave notch such as a scratch or a groove Examples thereof include a method of providing, a method of printing a mark by printing or transfer, and a method of adhering a member to be the mark.

  Known materials for the standard denture base can be used without any limitation. Specifically, at least from a homopolymer of methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-propyl (meth) acrylate, butyl (meth) acrylate or a copolymer thereof. One selected poly (meth) acrylate resin, polyolefin resin (eg, polypropylene), polyamide resin (eg, nylon 66 (registered trademark)), polyester resin (eg, polycarbonate), polyether resin ( For example, polyacetal, polysulfone), polynitrile resin (for example, polyacrylonitrile), polyvinyl resin (for example, polyvinyl acetate), cellulose resin (for example, cellulose acetate), fluorine resin (for example, polychlorofluoroethylene) Emissions), imide-based resins (e.g., an aromatic polyimide), and the like.

  The standard denture base can also contain a filler in order to improve the strength of the denture base. The filler may be an organic filler or an inorganic filler. Moreover, you may use the granular organic-inorganic composite filler obtained by adding a polymerizable monomer to an inorganic filler beforehand, making it paste-form, polymerizing, and grind | pulverizing.

  A part of the reference denture base may be made of metal.

  The reference denture base can be manufactured by a known molding method. Examples include injection molding and compression molding. The dividing mechanism may be formed simultaneously with the formation of the standard denture base, or may be formed later.

As the artificial tooth, a known artificial tooth made of resin or ceramic can be used. Examples of resin-made artificial teeth include the above-mentioned poly (meth) acrylate resins, polyolefin resins, polyamide resins, polyester resins, polyether resins, polynitrile resins, polyvinyl resins, cellulose resins, and fluorine resins. Examples include artificial teeth made of resin, imide resin, silicon resin and the like. As a method for fixing the artificial tooth, conventionally known methods such as fitting and adhesion can be used without any limitation.

(Partial denture preparation kit)
The partial denture preparation kit of the present invention comprises the above-mentioned reference denture base, an artificial tooth, and a lining material. Or it consists of the above-mentioned reference denture and a lining material.

  As the lining material, known materials can be used without any limitation. For example, the above-mentioned poly (meth) acrylate resin described as a standard denture base material, polyolefin resin, polyamide resin, polyester resin, polyether resin, polynitrile resin, polyvinyl resin, cellulose resin, Fluorine resin, imide resin, silicon resin and the like can be mentioned.

  As the artificial tooth, a known artificial tooth made of resin or ceramic can be used. As resin-made artificial teeth, the poly (meth) acrylate resin described above as a standard denture base material, as well as polyolefin resin, polyamide resin, polyester resin, polyether resin, polynitrile resin, polyvinyl resin, Examples include artificial teeth made of cellulose resin, fluorine resin, imide resin, silicon resin and the like. As a method for fixing the artificial tooth, conventionally known methods such as fitting and adhesion can be used without any limitation.

In the partial denture preparation kit of the present invention, it is preferable to prepare a plurality of maxillary standard denture bases or maxillary standard dentures and mandibular standard denture bases or mandibular standard dentures of different sizes. Thereby, the adaptation rate to a patient can be raised more.

(Production method of partial denture)
In the present invention, the partial denture can be prepared using the partial denture preparation kit.
As a preparation method of a partial denture using a partial denture preparation kit comprising a reference denture base, an artificial tooth, and a lining material, first, an artificial tooth prepared as a partial denture from the reference denture base of the present invention The basic denture base of the portion where the teeth are arranged is divided to obtain a basic shape body of the partial denture, and then artificial teeth are arranged on the basic shape body and a backing material is built up. Thereby, the partial denture with a high precision can be produced.
As a preparation method of a partial denture using a partial denture preparation kit comprising a reference denture and a lining material, first, an artificial tooth prepared as a partial denture from the reference denture according to the present invention and a reference denture associated therewith The floor is divided to obtain a basic shape body of a partial denture, and then a backing material is built up on the basic shape body. Thereby, the partial denture with a high precision can be produced.

  As a dividing method, it may be divided by using a tool such as a router, a pliers, or a cutter, or may be divided by human power.

The method for producing a partial denture of the present invention can also use a reference denture base that does not have a dividing mechanism. That is, by cutting the artificial tooth and the denture base that accompanies the artificial tooth from the reference denture that does not have a dividing mechanism, a basic shape body of a partial denture is obtained, and then a lining material is built on the basic shape body. Thus, a partial denture can be produced. According to this method, the time required to cut the artificial tooth and the denture base attached thereto from the reference denture becomes longer. However, when preparing a partial denture having two or more teeth, it is effective in that the time required for positioning the artificial tooth can be shortened by using a reference denture in which the relative positional relationship of the denture is determined.

Example 1
In order to create a partial denture with one tooth missing on the upper right side of the upper jaw, prepare a standard denture for the upper pallet with a mark for cutting, and split, reshape, wire bending, lining, and polishing in 5 stages It produced through the process of. The time required for each process was as follows: division process: 4 minutes, shape correction process: 1 minute, wire bending: 10 minutes, lining process: 10 minutes, polishing process: 10 minutes, and the total production time was 35 minutes. .
In the dividing step, a diamond-coated disk having a diameter of 22 mm and a thickness of 0.2 mm was used at a rotational speed of 3000 rpm.

(Examples 2 to 4)
Example 2 is a mode in which grooves for cutting are carved, but the division process time was the same as that of Example 1 except for 2 minutes, and the total production time was 33 minutes.
Example 3 is a mode in which a through hole for cutting (the connecting portion is 20% with respect to the area of the through hole) is provided, but the division process time is the same as Example 1 except for 5 seconds, and the total production The time was 31 minutes. The dividing process was performed using bare hands.
Example 4 is a mode in which a through hole for cutting (the connecting portion is 20% with respect to the area of the through hole) is provided in the reference denture of the upper palate, but the division process time: 10 seconds, the form correction time: 110 seconds was the same as in Example 1, and the total production time was 32 minutes. The dividing process was performed using bare hands.

(Comparative Example 1)
A partial denture with a single-tooth missing part 6 on the right side of the upper jaw was made in the following process, which took a total of 147 minutes. The time required for each process is artificial tooth arrangement process: 2 minutes, wire bending process: 10 minutes, embedding process: 30 minutes, dewaxing process: 10 minutes, filling process: 20 minutes, polymerization process: 60 minutes, indexing Process: 5 minutes, polishing process: 10 minutes.

(Example 5)
In order to create a partial denture with a single tooth missing on the lower right side of the 6th tooth, prepare a lower standard denture with a mark for cutting, and perform five steps: division, shape modification, wire bending, lining and polishing. It was made after that. The time required for each process was as follows: division process: 4 minutes, shape correction process: 1 minute, wire bending: 10 minutes, lining process: 10 minutes, polishing process: 10 minutes, and the total production time was 35 minutes. .
In the dividing step, a diamond-coated disk having a diameter of 22 mm and a thickness of 0.2 mm was used at a rotational speed of 3000 rpm.

(Examples 6 to 7)
Example 6 is a mode in which a groove for cutting is carved, but it was the same as Example 5 except for the division process time: 2 minutes, and the total production time was 33 minutes.
Example 7 is a mode in which a through hole for cutting (the connecting portion is 20% with respect to the area of the through hole) is provided, but the division process time is the same as that of Example 5 except for 5 seconds. The time was 31 minutes. The dividing process was performed using bare hands.

(Comparative Example 2)
A partially made denture with a single tooth missing on the right side of the lower jaw on the right side was prepared in the following step, taking a total of 147 minutes. The time required for each process is artificial tooth arrangement process: 2 minutes, wire bending process: 10 minutes, embedding process: 30 minutes, dewaxing process: 10 minutes, filling process: 20 minutes, polymerization process: 60 minutes, indexing Process: 5 minutes, polishing process: 10 minutes.

(Example 8)
In order to create a partial denture with three teeth missing on the maxillary right 5, 6 and 7, a standard denture with a maxillary pallet with a through hole for cutting (the connecting part is 20% of the area of the through hole) It was prepared through five steps of division, shape modification, wire bending, lining, and polishing. The time required for each process was as follows: division process: 5 seconds, shape correction process: 120 seconds, wire bending: 10 minutes, lining process: 10 minutes, polishing process: 10 minutes, and the total production time was 32 minutes. .
The dividing process was performed using bare hands.

(Comparative Example 3)
A partial denture with 3 teeth missing on the upper right 5th, 6th, and 7th, made to order, was prepared in the following step, taking a total of 151 minutes. The time required for each process is artificial tooth arrangement process: 6 minutes, wire bending process: 10 minutes, embedding process: 30 minutes, dewaxing process: 10 minutes, filling process: 20 minutes, polymerization process: 60 minutes, indexing Process: 5 minutes, polishing process: 10 minutes.

Example 9
In order to produce a partial denture with a 3-dental defect on the right lower jaw 5, 6 and 7, prepare a lower standard denture with a through hole for cutting (the connecting portion is 20% of the area of the through hole), It was manufactured through a five-step process including division, shape correction, wire bending, lining, and polishing. The time required for each process was as follows: division process: 5 seconds, shape correction process: 120 seconds, wire bending: 10 minutes, lining process: 10 minutes, polishing process: 10 minutes, and the total production time was 32 minutes. .
The dividing process was performed using bare hands.

(Comparative Example 4)
A partial denture with a 3-tooth defect of the lower right 5th, 6th and 7th, made to order, was prepared in the following step, taking a total of 151 minutes. The time required for each process is artificial tooth arrangement process: 6 minutes, wire bending process: 10 minutes, embedding process: 30 minutes, dewaxing process: 10 minutes, filling process: 20 minutes, polymerization process: 60 minutes, indexing Process: 5 minutes, polishing process: 10 minutes.

(Example 10)
To create a partial denture with 6 teeth missing, right upper 3, 2, 1 left 1, 2, 3, left maxillary anterior teeth, through hole for cutting (connecting portion is 20% of the area of the through hole) A standard denture of the maxillary pallet was prepared and manufactured through five steps of division, shape correction, wire bending, lining, and polishing. The time required for each process was: division process: 5 seconds, shape correction process: 180 seconds, wire bending: 10 minutes, lining process: 10 minutes, polishing process: 10 minutes, and the total production time was 33 minutes. .
The dividing process was performed using bare hands.

(Comparative Example 5)
A partial denture with a 6-tooth defect of the left and right upper teeth 3, 2, 1-left 1, 2, 3 was made in a custom-made manner and took 157 minutes in total. The time required for each process is artificial tooth arrangement process: 12 minutes, wire bending process: 10 minutes, embedding process: 30 minutes, dewaxing process: 10 minutes, filling process: 20 minutes, polymerization process: 60 minutes, indexing Process: 5 minutes, polishing process: 10 minutes.

(Example 11)
To create a partial denture with 6 teeth missing on the right side 3, 2, 1-left 1, 2, 3 of the lower anterior teeth of the lower jaw, a through hole for cutting (the connecting part is 20% of the area of the through hole) The prepared mandibular standard denture was prepared and manufactured through five steps of division, shape modification, wire bending, lining and polishing. The time required for each process was: division process: 5 seconds, shape correction process: 180 seconds, wire bending: 10 minutes, lining process: 10 minutes, polishing process: 10 minutes, and the total production time was 33 minutes. .
The dividing process was performed using bare hands.

(Comparative Example 6)
The partial denture of the 6-tooth defect of the custom-made lower anterior teeth right side 3, 2, 1-left side 1, 2, 3 was prepared in the following step, taking a total of 157 minutes. The time required for each process is artificial tooth arrangement process: 12 minutes, wire bending process: 10 minutes, embedding process: 30 minutes, dewaxing process: 10 minutes, filling process: 20 minutes, polymerization process: 60 minutes, indexing Process: 5 minutes, polishing process: 10 minutes.

10 ... Maxillary standard denture base 11 ... Maxillary central incisor 11a ... Interdental portion between left maxillary central incisor and right maxillary central incisor 12 ... Maxillary incisor 13 ... Maxillary canine 14 ... Maxillary first premolar 15 ... Maxillary second premolar 16 ... Maxillary first molar 16a ... Central fossa of maxillary first molar 17 ... Maxillary second molar 20. ··· Mandibular standard denture base 21 · Mandibular central incisor 21a · Interdental portion between left mandibular central incisor and right mandibular central incisor 22 · Mandibular incisor 23 · Mandibular canine 24 · .... Mandibular first premolar 25 ... Mandibular second premolar 26 ... Mandibular first premolar 26a ... Mandibular first premolar fossa 27 ... Mandibular second premolar 31, 33, 35 ... Guide 50,52 ... Left cheek floor margin 51,53 ... Right cheek floor margin 100 ... Maxillary standard denture 101 ... Human Tooth 200 ... under the jaw standard dentures L1~L7, J1~J7 ··· dividing line

Claims (12)

  A reference denture base which is a reference denture base prepared in advance and has a dividing mechanism for dividing the reference denture base at a predetermined position.   The reference denture base according to claim 1, wherein the dividing mechanism is a recess formed in the reference denture base.   The reference denture base according to claim 2, wherein a position where the concave portion is formed is a side of the reference denture base on the contact surface with the ridge.   The reference denture base according to claim 1, wherein the dividing mechanism is a plurality of through holes formed in the reference denture base.   The standard denture base according to claim 4, wherein the length of the opening of the through hole in the longitudinal direction is 0.5 to 20 mm. The dividing mechanism is a perforated broken line formed by connecting a plurality of the through holes,
5. The standard denture base according to claim 4, wherein the broken line is formed with a cutting portion having a total length of 0.1 to 40% with respect to the entire length on the ridge contact surface side.   The reference denture base according to claim 1, wherein the division mechanism is a division mechanism formed so that artificial teeth arranged on the reference denture base can be divided for each dentition. A standard denture base according to claim 1;
Artificial teeth arranged in the standard denture base,
A standard denture consisting of A standard denture base according to claim 1;
Lining materials,
Artificial teeth,
A partial denture preparation kit comprising: A standard denture according to claim 8;
Lining materials,
A partial denture preparation kit comprising: Dividing the standard denture base;
Arranging artificial teeth on the divided standard denture base;
Building a lining material on the divided standard denture base;
A method for preparing a partial denture, comprising: Dividing the standard denture;
Building a lining material on the divided standard denture;
A method for preparing a partial denture, comprising:

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