KR101427202B1 - Fixture for dentaL implant - Google Patents

Abstract

The present invention relates to a fixture for a dental implant, including: a body where an upper portion is formed into a reverse-tapered shape with respect to a height direction, a middle portion is formed into a linear shape, and a lower portion is formed into a tapered shape; and a thread that is formed at an outer circumferential edge of the body and has a side end surface shape formed of an upper surface, a tip end surface, and a lower surface forming an obtuse angle with respect to the tip end surface. The tapered shape of the lower portion facilitates penetration of an alveolar bone during implantation, the reverse-tapered shape of the upper portion enhances a fixing force in an osseous integration state after a procedure, an advancing force of the lower portion of the fixture is maximized during implantation, and a fixing force of the upper portion is maximized after implantation.

Description

Fixture for dental implant "

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dental implant used in a dental implant, and more particularly, to a dental implant having an improved function by deforming the shape of each dental implant.

In order to replace the root of the missing tooth, the dental implant is implanted with an artificial tooth made of an alloy such as titanium, which does not have a rejection reaction to the human body, Restoring the original function of the tooth. That is, a dental implant refers to a lost natural tooth substitute itself, or a screw-shaped fixture is fastened to the alveolar bone to be fused with the bone for 3 to 8 months, and then abutment, And restoring the original function of the tooth by fixing the artificial tooth.

Such dental implants can be variously classified according to the method of joining an artificial tooth and a root, and among them, there is an implant using a screw type implant.

An example of a conventional screw type implant is disclosed in Korean Patent No. 1092314 (entitled "Fixture of Dental Implant and Implant Operation Set Including the Same"). 1, a tapered body 10, a beveled portion 11 formed on a top side portion of the body 10, a body 10, A cutting edge 12 formed on the outer circumferential surface of the screw 12, and a cutting edge 13 formed on a part of the thread 12, and the like. At this time, the body 10 has a tapered shape which is inclined so that its diameter decreases from the upper portion to the lower portion.

However, after implantation of such a diaphragm into the alveolar bone, the gingival tissue covering each diaper was submerged due to the bone resorption phenomenon, and the fixative force between each diaphragm and the alveolar bone was weakened, and ultimately the artificial tooth was damaged. The beveled portion 11 is not sufficient to restrain the settlement of the gingival tissue but the beveled portion 11 is insufficient to suppress the settlement. Since the body 10 is in the shape of a superficial lower limb, There was a problem of accelerating.

KR1092314 10

According to the present invention, which is devised to solve the above problems, a tapered section in mutually opposing directions is formed on the upper and lower sides of each phantom with respect to the height direction, so that the piercing body enhances the forward force and the fixing force with respect to the alveolar bone, The present invention provides an implantable dental implant that can effectively suppress the settlement of gingival tissue due to the phenomenon of absorption and the like.

In order to achieve the above-mentioned object, according to an embodiment of the present invention, each implant of a dental implant is formed in an inverted tapered shape with its upper portion facing downward with respect to the height direction, A lower body formed in a tapered shape downward; And a thread formed on the outer circumference of the body.

Here, the shape formed by connecting the mountains of the thread is composed of an upper portion, a middle portion which is a reverse section and a lower section which is a reverse section such as a reverse taper section, and a lower section which is a reverse taper section, The upper portion 101 and the intermediate portion 102, and the lower portion 103, which is a reverse tapered portion.

According to another embodiment of the present invention, there is provided a dental implant comprising: a body formed of a linear section with respect to a height direction of a dental implant; And the threads of the thread are formed in a downward direction with respect to the height direction, an upper portion which is a reverse taper section, an intermediate portion which is a straight section, and a lower portion which is a reverse taper section, An upper portion 101 and an intermediate portion 102, and a lower portion 103 of a reverse tapered portion.

In this case, the taper and reverse taper angles of the lower and upper portions are 1 to 5 degrees.

Further, the lower taper angle is characterized by being larger than the upper reverse taper angle.

On the other hand, the thread is characterized in that the side cross-sectional shape is a shape consisting of an upper face, a front end face, and a downward inclined lower face.

In this case, the areas of the front end face gradually widen from the lower end to the upper end of the body, or gradually widen from the lower end to the upper end as boundaries between the upper and lower ends of the body, or widen or narrow with respect to the height direction of the body And the pattern is repeatedly formed.

Here, as an example of the side cross-sectional shape of the screw thread, a horizontal top surface, a vertical front end surface, and a downward inclined bottom surface are formed with respect to the height direction of the body.

The shape formed by connecting the mountains of the thread is formed with a downward tapered section, a straight section and a reverse taper section as a body shape downward with respect to the height direction.

The angle formed by the upper surface of one of the threads and the lower surface of the adjacent thread is 33 to 38 degrees.

In addition, a beveled portion having a downward tapered shape is formed at one end side to be connected to the upper portion of the body, and a thread is formed to the boundary line of the beveled portion and the beveled portion.

Further, a cutting edge is formed on a part of the thread.

As described above, according to the present invention, the tapered bottom portion, the middle portion of the straight line portion, and the reverse tapered portion are reduced in diameter so as to increase the diameter of the body except for the thread, So that it can be easily penetrated into the alveolar bone due to the tapered shape of the lower portion when the implantation is performed and the fixation force is enhanced due to the reverse tapered shape of the upper portion in the state of fusion after the implantation.

In addition, the top surface of the thread formed from the bottom portion to the top of each plate is gradually widened, and the upper portion in which the external shape of the threads or the body is tapered upward in the height direction, the intermediate portion in the straight portion, And the inclined lower surface of the one side thread and the inclined lower surface of the other side thread are formed to have a certain angle from one another among the mutually adjacent threads so that the advancing force of the lower part of the lower part and the upper part There is an effect of maximizing the fixing force.

A beveled portion is formed on a part of the upper end of each plate, and a thread is formed in the beveled portion or in the beveled portion. Thus, when the gingival tissue is settled by osteonecrosis, periodontitis, So that the settling can be progressed step by step to enhance the suppression of settlement of the gingival tissue.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be interpreted.
1 is a side view showing a conventional implant body.
FIG. 2 is a side view illustrating the implant of a dental implant according to a preferred embodiment of the present invention.
Fig. 3 is an enlarged view of the "A" part shown in Fig.
Figs. 4A and 4B are side views showing the threaded shapes of the lower portion and the upper portion of each plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

<Configuration>

FIG. 2 is a side view showing the implant of a dental implant according to a preferred embodiment of the present invention, FIG. 3 is an enlarged view of the "A" region shown in FIG. 2, And a top view of the screw thread.

As shown in FIG. 2, the implantable dental implant according to the present invention includes a body 100, a thread 110 formed on the outer periphery of the body 100, and a thread 110 formed on the lower portion 103 of the body 100 And a cutting edge 120 formed on a portion of the thread 110. [ Hereinafter, the upper, middle, and lower portions of the body 100 will be described with reference to the granular state for placing each diaphragm into the alveolar bone for convenience of explanation.

The cutting edge 120 is formed by cutting away a portion of the thread 110, and the sharp tip of the cutting edge 120 makes it easier to place each of the plates. The cutting edges 120 may be inclined to one side with respect to the height direction of the body 100, and may be formed as a pair or a pair of mutually symmetrical threads on the threads 110.

The body 100 includes an upper portion 101 having an inverted taper shape with respect to the height direction, an intermediate portion 102 formed in a linear shape, a lower portion 103 having a tapered shape, The bevel portion 104 inclined toward the center with respect to the height direction of the bevel portion 100 is formed. Hereinafter, for the sake of convenience of explanation, the shape which is inclined downward in the lower portion 103 is referred to as being tapered and the shape inclined downward from the upper portion is reverse-tapered.

Here, the inverse taper and taper angles of the upper portion 101 and the lower portion 103 are formed within substantially 1 to 5 degrees with respect to the vertical portion, and the reverse taper angle of the upper portion 101 is formed to be smaller than the lower taper angle. This is because, when the taper angle of the lower portion 103 is increased to increase the advancing force when each diaphragm is placed in the alveolar bone, the taper angle of the upper portion 101 is made small so that the implant is placed in the alveolar bone, And to improve the fixation force between each implant.

Of course, the reverse tapered and tapered shapes of the upper portion 101 and the lower portion 103 may form a sloped surface of a straight line from a side view, or a sloped surface of a curved surface. 2, the inverted tapered upper portion 101 is formed in a substantially gentle curve as a whole, and the tapered lower portion 103 has a substantially gentle curve on a portion thereof, Is formed so as to form a relatively sharp curve. Of course, the angle of the reverse tapered section and the tapered section made of a straight line or a curved slope is within 1 to 5 degrees with respect to the vertical.

More specifically, when the lower portion 103 is divided into an upper portion H and a lower portion L as shown in Fig. 2, the angle of the upper portion H is 1 to 5 degrees, The angle can be relatively steep. The reason why the lower portion (L) is steeply inclined is to allow the implant body to maintain a standing image while being easily inserted into the hole of the alveolar bone formed for placing each diaper. When the angle is less than 1 degree, the advancing force of the lower portion 103 is lowered when the implantation is performed. If the angle is larger than 5 degrees, the lower portion 103 or the upper portion 101 becomes too sharp, Unexpected damage may occur. At this time, the angle of the upper side may be 1 to 3 degrees. In this case, damage to the alveolar bone or the gingival tissue can be prevented with more margin.

In addition, the inverted tapered upper portion 101 delays the phenomenon of gingival tissue subsidence due to osteonecrosis, bone resorption, and periodontal disease after the implant procedure. That is, when the diaphragm is placed in the alveolar bone, the gingival tissue is brought into close contact with the diaphragm by elasticity, and the reverse tapered shape delays the settlement of the gum tissue and significantly reduces the stress with the upper metatarsal bone. Here, the bone resorption is a phenomenon in which the amount of gum tissue around the neck of the implanted implant is decreased and degenerated. This bone resorption may cause the gingival tissue covering each diaphragm to settle, thereby exposing the masticatory body in the oral cavity, causing unstressed stress acting on adjacent bone tissue of the diaphragm due to external forces such as chewing food or teeth colliding with each other , And both osseointegration and low stimulation due to stress concentration promoted bone resorption.

When the gum tissues including the compacted bone are closely attached to each other while the teeth are wrapped around the flattened body, the linear intermediate portion 102 is subjected to the same or substantially uniform torque due to its linear shape, The fixation force of each diaphragm increases.

The inverted tapered beveled portion 104, which is connected to the upper portion 101 in a steeper manner than the upper portion 101, also delays the gum tissue subsidence after the upper portion 101 and the implant.

Therefore, by maintaining the stress distribution due to the external force evenly by the reverse tapered upper portion 101 and the beveled portion 104, settlement of the gum tissue due to osteonecrosis, periodontitis, and bone resorption phenomenon can be restricted as much as possible. In addition, the additional structure for suppressing the settlement phenomenon of the gingival tissue will be described while explaining the screw thread 110.

On the other hand, the thread 110 is formed by cutting down a base material (not shown) in which a reverse taper, a straight line, and a tapered section are sequentially formed downward with respect to the height direction, and the side sectional shape thereof is as shown in Figs. 4A and 4B And has an upper surface 111, a distal end surface 112, and an inclined lower surface 113. As an example of the side cross-sectional shape of the thread 110, a semi-trapezoidal shape constituting the horizontal upper surface 111, the vertical leading end surface 112, and the inclined lower surface 113 is preferable.

These threads 110 are formed to the boundary between the bevel portion 104 and the upper portion 101 or in the bevel portion 104. The thread 110 has a stepped boundary between the mountain and the bone, The settlement phenomenon of the gum tissue due to the development or the like is performed in a stepwise manner, thereby suppressing the settlement phenomenon of the gum tissue. That is, the gingival tissues are not depressed as sliding as in the prior art due to the stepped portions by the bevel portion 104 and the thread 110, but the depression phenomenon is suppressed by sinking stepwise.

3, the angle? Between the upper surface 111 of one of the threads 110 and the lower surface 113 of the adjacent thread 110 is substantially 32 to 38 degrees, Lt; RTI ID = 0.0 &gt; 35 degrees. &Lt; / RTI &gt; When the angle is only 32 degrees, the forward force for fitting each diaphragm to the alveolar bone is lowered, and when the angle exceeds 38 degrees, the fixing force for fixing each diaphragm fixed to the alveolar bone is lowered.

The distal end face 112 of the thread 110 gradually widens from the lower end of the body 100 toward the upper end. Of course, the area of the distal end face 112 may be differently divided into the lower portion 103, the intermediate portion 102 and the upper portion 101, or may be formed differently from the other reference portions. 4A and 4B, the side end surface of the thread 110 in the lower portion 103 of the body 100 has a relatively small sharp shape, and the side end surface of the thread 110 in the upper portion 101 It is a relatively wide blunt shape. This makes it possible to improve the advancing force due to the shape of the thread 110 in the lower portion 103 where the width of the distal end face 112 is small when each implant is placed in the alveolar bone, So that the fixing force with the gingival tissue can be improved due to the shape of the thread 110 in the upper portion 101 where the width of the distal end face 112 is large.

The upper and lower tapered portions 101, 102, and 103 are formed by connecting the mountains 110 and the mountains 110, respectively. 103, and the like. Of course, the angle formed by the extended lines of the mountains is formed by taper or reverse taper at an angle of 1 to 5 degrees with respect to the lower portion 103 and the upper portion 101, and the lower portion 103 forms an angle larger than that of the upper portion 101 Lt; / RTI &gt;

The thread 110 may be formed by cutting a base material having a reverse taper section, a straight section and a taper section formed downward, or may be formed by cutting a base material having only a taper section and a straight section.

As for the combination of the shapes of the thread 110 and the matrix 100, the shape formed by connecting the mountains of the thread 110 with the mountains of the thread 110 in the first embodiment is a downward tapered shape The shape formed by connecting the upper part 101, the straight middle part 102 and the tapered lower part 103 and connecting the mountains has the same shape as the connection of the upper part 101, the intermediate part 102, The lower portion 103 is formed.

In addition, in the second embodiment, the connection of the troughs is formed by a linear upper portion 101, an intermediate portion 102, and a tapered lower portion 103, and the connecting shape of the mountains is downward tapered An upper portion 101, a linear intermediate portion 102 and a tapered lower portion 103. [

In addition, in the third embodiment, the connection of the troughs is formed by a straight upper portion 101, a middle portion 102 and a lower portion 103, A straight intermediate portion 102, and a tapered lower portion 103. [0042] As shown in Fig.

In addition, in the fourth embodiment, the shape connecting the troughs is formed by a downward tapered top portion 101, a straight intermediate portion 102 and a tapered bottom portion 103, Shaped upper portion 101, an intermediate portion 102, and a tapered lower portion 103, as shown in Fig.

Of course, the shapes connecting the mountains and the shapes connecting the scaffolds can be variously modified and combined by using the above-described various embodiments.

Alternatively, the shape of the body 100, that is, the connecting points of the threads 110 may be formed in the shape of the first, second, third, and fourth embodiments while forming the thread 110 in the base material formed with only the straight line section.

Here, as the straight line section is wider in the shape connected with the bones or the shape connected with the mountains, the fixing force between the gum tissue including the alveolar bone and the each tooth increases. Particularly, as the straight section of the shape connecting the mountains is wider, the gingival tissues including the compacted bone are initially wrapped around the diaphragm, and the fixation of each diaper and the gum tissue .

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: Body
101: upper
102: Middle part
103: Lower
104:
110: Threaded
111: upper surface
112:
113: When you
120: cutting edge
H: upper side
L: Lower part.

Claims (11)

A body 100; And a thread 110 formed on an outer circumferential surface of the body 100,
The shape formed by connecting the mountains of the threads 110 includes an upper portion 101 which is a straight section with a constant diameter downward with respect to the height direction, an intermediate section 102 which is a straight section whose diameter is downward with respect to the height direction, And a lower portion 103 which is a tapered section whose diameter decreases downward with respect to the height direction,
A shape formed by joining together the valleys of the threads 110 of the body 100 includes a top 101 of an inverted taper shape whose diameter is increased downward with respect to the height direction and a linear shape whose diameter is constant downward with respect to the height direction And a tapered bottom portion (103) whose diameter is reduced downward with respect to a height direction of the dental implant.
delete delete The method according to claim 1,
Wherein the angle of the reverse tapered shape of the upper portion (101) is 1 to 5 degrees and the angle of the tapered shape of the lower portion (103) is 1 to 5 degrees.
The method according to claim 1,
Wherein the angle of the tapered shape of the lower portion (103) is greater than the angle of the inverse tapered shape of the upper portion (101).
The method according to claim 1,
The thread 110 includes a top surface 111 having a horizontal cross-sectional shape in the height direction of the body 100, a vertical front end surface 112, and a downward inclined bottom surface 113, Each implant of the implant.
The method according to claim 6,
The width of the front end face 112 gradually widens from the lower end of the body 100 toward the upper end,
The width of the front end face 112 is widened stepwise from the lower end to the upper end with boundaries defined by the height direction of the body 100,
Wherein a width of the distal end face (112) is widened or narrowed with respect to a height direction of the body (100) is repeatedly formed.
delete The method according to claim 6,
Wherein the angle (?) Formed by the upper surface (111) of the thread (110) and the adjacent lower surface (113) is 33 to 38 degrees.
The method according to claim 1,
A bevel portion 104 is formed in a downward tapered shape at one end portion of the body 100 so as to be connected to the upper portion 101 and the bevel portion 104 is formed down to the boundary line between the bevel portion 104 and the upper portion 101, (104) of the dental implant.
The method according to claim 1,
Wherein a cutting edge (120) is formed on a portion of or above the thread (110).

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