KR102539577B1 - Method, device and recording medium for providing modeling data of artificial teeth for an object - Google Patents

Abstract

According to an embodiment, by analyzing the central occlusion state and dynamic occlusion movement of the object to determine the occlusion form of the object, modeling data of an artificial tooth to which an occlusion form suitable for the user is applied may be provided, and the occlusion form may be determined by the user. A method, device, and recording medium capable of improving user convenience by providing a user interface that can be easily checked and changed are disclosed.

Description

Method, device and recording medium for providing artificial tooth modeling data for a target object

The present disclosure relates to a method, device, and recording medium for providing modeling data of an artificial tooth for an object. Specifically, the present disclosure can provide modeling data of an artificial tooth to which an occlusion form suitable for the user is applied by determining the occlusion form of the object by analyzing the central occlusion state and the dynamic occlusion movement of the object, and the user can determine the occlusion form It relates to a method, device, and recording medium capable of improving user convenience by providing a user interface that can be easily checked and changed.

Conventionally, when designing a prosthesis, it is difficult to analyze and measure the occlusion state of neighboring teeth, and thus it is difficult to reflect the occlusion state of adjacent teeth.

Accordingly, the prior art is to design a prosthesis in a static occlusion state, a central occlusion state, or manufacture a prosthesis through occlusal movement through numerical values already input into an articulator, such as a virtual articulator, rather than a patient's own dynamic occlusion movement. method was used

However, according to the prior art, there is a problem in that the unique occlusion shape of the patient is not reflected, so that the accuracy of the prosthesis design is reduced and the sense of balance with the surrounding teeth is poor.

Accordingly, there is a need for a technique for solving the above problems and providing a prosthesis suitable for the patient's occlusion situation.

The present disclosure may provide a method, device, and recording medium for providing modeling data of an artificial tooth for an object. Specifically, by analyzing the central occlusion state and dynamic occlusion movement of the object to determine the occlusion form of the object, it is possible to provide modeling data of an artificial tooth to which an occlusion form suitable for the user is applied, and the user can easily check the occlusion form. And a method, device, and recording medium capable of improving user convenience by providing a changeable user interface are disclosed. The technical problem to be solved is not limited to the technical problems described above, and various technical problems may be further included within a range obvious to those skilled in the art.

A method for providing modeling data of an artificial tooth for an object according to a first aspect of the present disclosure includes static occlusion data representing positions of a plurality of teeth included in the object and movement of the object when the object is in a static occlusion state. obtaining dynamic occlusion data representing; determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data; determining an occlusion shape of the object based on the movement path; and providing the modeling data determined based on the occlusion shape.

The method may further include outputting a message inquiring whether or not to update the occlusion shape; updating the occlusion shape according to a response to the message; and updating and providing the modeling data based on the updated occlusion form.

In addition, the step of determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data may include a plurality of points used to determine a movement path for the plurality of teeth based on the static occlusion data. determining; and determining a movement path of the plurality of teeth by analyzing forward, right, and left movements of the object appearing in the dynamic occlusion data based on the plurality of points.

In addition, the plurality of points may include at least one of a first point corresponding to the mesial end of the anterior teeth, a second point corresponding to the distal buccal end of the right posterior teeth, and a third point corresponding to the distal buccal end of the left posterior teeth. can

In addition, determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data may include determining a movement path of the plurality of teeth based on the forward movement that satisfies a forward movement boundary condition. The method may further include a step; and the forward motion boundary condition may include a condition in which a distance between the first point and the cutting edge of the antagonist tooth is equal to or less than a preset value.

In addition, the step of determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data may include determining a movement path of the plurality of teeth based on the right movement that satisfies a right movement boundary condition. The step may further include, and the right motion boundary condition may include a condition in which a distance between the second point and the buccal cusp of the opposing tooth is equal to or less than a preset value.

In addition, determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data may include determining a movement path of the plurality of teeth based on the left movement that satisfies a left movement boundary condition. The step may further include, and the left motion boundary condition may include a condition in which a distance between the third point and the buccal cusp of the opposing tooth is equal to or less than a preset value.

In addition, the occlusion form is a mutual protection occlusion representing an occlusion form in which the posterior teeth are separated by vertical and horizontal relationships of the canine teeth during the forward movement and the lateral movement of the object shown in the dynamic occlusion data, during the forward movement and the lateral movement Including at least one of a unilateral balanced occlusion representing an occlusion form in which a plurality of teeth distributing the occlusion force are in simultaneous contact and a bilateral balanced occlusion representing an occlusion form in which the cusps on the balancing side of the posterior teeth contact together when the cusps on the working side of the posterior teeth contact each other can do.

In addition, in the step of providing the modeling data determined based on the occlusion form, when the occlusion form is determined as the mutual protection occlusion, the modeling data is used so that a contact point is not generated in the posterior teeth during the forward movement and the lateral movement. Acquisition steps may be included.

In addition, the providing of the modeling data determined based on the occlusion type may include, when the occlusion type is the mutual protection occlusion, the interference area interfering with the movement of the teeth at a predetermined level or more during the forward movement and the lateral movement. determining presence or absence; and updating the modeling data by deleting a predetermined first thickness or more from the thicknesses of the interference region during the forward movement and the lateral movement when the interference region is equal to or greater than the preset first number. there is.

In addition, in the step of providing the modeling data determined based on the occlusion form, when the occlusion form is determined as the unilateral balanced occlusion, the posterior teeth are identical to adjacent teeth at a predetermined level or more during the forward movement and the lateral movement. The method may include obtaining the modeling data so that an intersection point of intensity is generated.

In addition, the providing of the modeling data determined based on the occlusion type may include, when the occlusion type is the unilateral balanced occlusion, the interference area interfering with the movement of teeth at a predetermined level or more during the forward movement and the lateral movement. determining presence or absence; and when the number of interference areas is greater than or equal to the second predetermined number, the thickness of the interference area during the lateral motion is determined by the thickness of the interference area during the lateral motion so that a contact point is formed with the same or similar intensity as the neighboring teeth at a predetermined level or more. The method may further include updating the modeling data by deleting the set second thickness or more.

In addition, the step of outputting a message inquiring whether to update the occlusion form determines one or more recommended occlusion forms based on the degree of conformity of the occlusion form indicating the degree to which the analysis result of the movement path corresponds to each occlusion form. step; and outputting an occlusion shape list including information on the occlusion shape and one or more recommended occlusion shapes together with the message.

According to a second aspect of the present disclosure, a device for providing modeling data of an artificial tooth for an object includes static occlusion data representing positions of a plurality of teeth included in the object and movement of the object when the object is in a static occlusion state. a receiving unit for obtaining dynamic occlusion data indicating; and determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data, determining an occlusion shape of the object based on the movement path, and determining the modeling data based on the occlusion shape. It may include a processor that provides.

In addition, the processor may output a message inquiring whether to update the occlusion shape, update the occlusion shape according to a response to the message, and update and provide the modeling data based on the updated occlusion shape. there is.

In addition, the processor determines a plurality of points used to determine a movement path for the plurality of teeth based on the static occlusion data, and based on the plurality of points, the forward movement of the object appearing in the dynamic occlusion data; A movement path of the plurality of teeth may be determined by analyzing right and left movements.

In addition, the plurality of points may include at least one of a first point corresponding to the mesial end of the anterior teeth, a second point corresponding to the distal buccal end of the right posterior teeth, and a third point corresponding to the distal buccal end of the left posterior teeth. can

In addition, the occlusion form is a mutual protection occlusion representing an occlusion form in which the posterior teeth are separated by vertical and horizontal relationships of the canine teeth during the forward movement and the lateral movement of the object shown in the dynamic occlusion data, during the forward movement and the lateral movement Including at least one of a unilateral balanced occlusion representing an occlusion form in which a plurality of teeth distributing the occlusion force are in simultaneous contact and a bilateral balanced occlusion representing an occlusion form in which the cusps on the balancing side of the posterior teeth contact together when the cusps on the working side of the posterior teeth contact each other can do.

A third aspect of the present disclosure may provide a computer readable recording medium recording a program for executing the method according to the first aspect in a computer. Alternatively, the fourth aspect of the present disclosure may provide a computer program stored in a recording medium to implement the method according to the first aspect.

According to an embodiment, modeling data of an artificial tooth to which an occlusion shape suitable for a user is applied may be provided.

In addition, user convenience can be improved by providing a user interface through which the user can easily check and change the occlusion shape.

The effects of the present disclosure are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present disclosure.

1 is a schematic diagram illustrating an example of a configuration of a device according to an embodiment.
2 is a flowchart illustrating a method for a device to provide modeling data of an artificial tooth for an object, according to an exemplary embodiment.
3 and 4 are diagrams each illustrating static occlusion data and dynamic occlusion data acquired by a device according to an exemplary embodiment.
5 is a diagram for explaining an operation in which a device determines a plurality of points using static occlusion data according to an embodiment.
6 to 8 are diagrams for explaining an operation of analyzing, respectively, a forward motion, a right motion, and a left motion of an object appearing in dynamic occlusion data based on a plurality of points by a device according to an exemplary embodiment.
9 to 11 are diagrams for explaining an operation in which a device determines an occlusion type of an object as mutual protection occlusion, unilateral balanced occlusion, and bilateral balanced occlusion, respectively, according to an exemplary embodiment.
12 and 13 are diagrams for explaining an operation of updating modeling data according to an interference region during dynamic movement when the occlusion type of an object is a mutual protection occlusion and a unilateral balanced occlusion, respectively, according to an exemplary embodiment; am.
14 to 17 are diagrams for explaining an operation in which a device updates an occlusion shape and modeling data according to a response to a message inquiring whether to update an occlusion shape according to an exemplary embodiment.
18 is a flowchart illustrating a method of providing, by the device 100, modeling data of an artificial tooth for an object, according to an exemplary embodiment.

The terms used in the embodiments have been selected as general terms that are currently widely used as much as possible while considering the functions in the present disclosure, but they may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technologies, and the like. In addition, in a specific case, there is also a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the invention. Therefore, terms used in the present disclosure should be defined based on the meaning of the term and the general content of the present disclosure, not simply the name of the term.

In the entire specification, when a part is said to "include" a certain component, it means that it may further include other components, not excluding other components unless otherwise stated. In addition, as described in the specification, "... wealth", "… A term such as “module” refers to a unit that processes at least one function or operation, and may be implemented as hardware or software or a combination of hardware and software.

Hereinafter, with reference to the accompanying drawings, embodiments of the present disclosure will be described in detail so that those skilled in the art can easily carry out the present disclosure. However, the present disclosure may be implemented in many different forms and is not limited to the embodiments described herein.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

1 is a schematic diagram illustrating an example of a configuration of a device 100 according to an embodiment, and FIG. 2 is a method for providing modeling data of an artificial tooth for an object by the device 100 according to an embodiment. It is a flow chart showing

Referring to FIGS. 1 and 2 , the device 100 according to an embodiment may include a receiver 110 and a processor 120 .

In step S210, the receiver 110 may obtain static occlusion data for the object. Here, the static occlusion data may represent the positions of a plurality of teeth included in the object when the object (eg, the upper and lower jaws of the patient) is in a static occlusion state, and for example, the upper and lower jaws of the patient are the most stable occlusion. Positional information and shape information of a plurality of teeth included in the upper jaw and/or lower jaw of the patient may be included in a centric occlusion state indicating a relationship.

In one embodiment, the static occlusion data may include 3D scan data of an object (eg, the patient's oral cavity) (see FIG. 3 ), maxillary scan data obtained through scanning of the patient's upper and lower jaws, and Lower jaw scan data may be further included.

In step S220, the receiver 110 may acquire dynamic occlusion data for the object. Here, the dynamic occlusion data may indicate movement of an object (eg, the upper and lower jaws of the patient), and for example, a plurality of teeth included in the upper and/or lower jaw of the patient move in a specific direction in a centric occlusion state. It may include position information and shape information of a plurality of teeth over time.

In an embodiment, the dynamic occlusion data may include at least one of forward movement, right movement, and left movement with respect to the oral cavity based on the central occlusion state of the object. For example, the lower jaw of the patient is forward and right relative to the upper jaw. and 3D scan data recording moments when the upper teeth and the lower teeth come into contact and when they do not come into contact when each moves to the left (see FIG. 4 ). In one embodiment, each of the forward movement, right movement, and left movement may be performed within the range of limit movement.

In one embodiment, the processor 120 may obtain static occlusion data or dynamic occlusion data by recording the centric occlusion state of the upper and lower jaws of the patient or the movement in the oral cavity of the patient in a digital scanning manner using an intraoral scanner. It is not limited to this, and static occlusion data is obtained by scanning the impression body after taking an impression using impression material, or by making a plaster model by pouring plaster on the impression body and then scanning the plaster model, or by using a camera-based shooting method. Dynamic occlusion data may be acquired by photographing the movement of the patient's teeth. In one embodiment, the receiving unit 110 may receive static occlusion data and/or dynamic occlusion data from an intraoral scanner (or an external device) through a wired or wireless communication module or from a pre-stored memory.

In step S230, the processor 120 may match the static occlusion data and the dynamic occlusion data. For example, the processor 120 assigns the static occlusion data and the dynamic occlusion data to the positions of a predetermined number (eg, 3) of reference teeth (eg, right angle region, anterior teeth and both posterior teeth, etc.) in each central occlusion state. Static occlusion data and dynamic occlusion data can be matched so that the coordinates are matched, and accordingly, the position change according to the forward movement, right movement, and left movement of the lower jaw (or upper jaw) based on the central occlusion state can be precisely analyzed. .

In step S240, the processor 120 may analyze the static occlusion data and the dynamic occlusion data to determine movement paths for a plurality of teeth. Various embodiments related to this will be described in more detail with further reference to FIGS. 5 to 8 .

5 is a diagram for explaining an operation of determining a plurality of points by using static occlusion data by the device 100 according to an embodiment, and FIGS. 6 to 8 respectively show the device 100 according to an embodiment This is a diagram for explaining an operation of analyzing each of the forward motion, right motion, and left motion of an object appearing in dynamic occlusion data based on a plurality of points.

Referring to FIG. 5 , the processor 120 may determine a plurality of points used to determine a movement path for a plurality of teeth based on static occlusion data, for example, in a central occlusion state appearing in the static occlusion data. A specific number (eg, 3) of points (eg, a, b, c) at a specific point in the lower jaw (or upper jaw) may be determined. In one embodiment, the plurality of teeth may include teeth corresponding to a plurality of points.

In one embodiment, the plurality of points include a first point (eg, c in FIG. 5 ) corresponding to the mesial side end of the anterior tooth (eg, the uppermost 1 point on the anterior mesial side), the distal buccal end of the right posterior tooth (eg, the rightmost end) A second point corresponding to the left distal buccal cusp 1 point (eg, Fig. 5 a) and a third point corresponding to the distal buccal end of the left molar (eg, the left most distal buccal cusp 1 point) (eg, Fig. 5a) : may include at least one of FIG. 5 b).

In an embodiment, the processor 120 may analyze the forward motion, right motion, and left motion of the object appearing in the dynamic occlusion data based on a plurality of points. For example, in the process of acquiring dynamic occlusion data by scanning the patient's dynamic occlusion movement, a movement path of three points set in the lower jaw may be scanned by classifying them into forward movement, right movement, and left movement. In addition, based on a preset boundary condition, a range of movement during dynamic occlusion movement is set, and the dynamic occlusion state in static occlusion data and the movement of three preset points during dynamic movement in dynamic occlusion data are matched to perform dynamic occlusion. During movement, dynamic occlusal movement of the patient can be derived within the range of movement.

Referring to FIG. 6 , the processor 120 may determine a movement path of a plurality of teeth according to a forward movement of the lower jaw (or upper jaw) based on a central occlusion state based on a plurality of points. For example, first position information of a plurality of points (eg, a, b, and c in FIG. 6) located on the lower jaw in a central occlusion state, and a plurality of points (eg, FIG. According to the comparison result with the second position information of a', b', c') of Fig. 6, the difference in position of the teeth and the movement path of the teeth may be generated for each point.

In one embodiment, the processor 120 may determine the movement path of the plurality of teeth by analyzing the forward movement that satisfies the forward movement boundary condition. In one embodiment, the forward motion boundary condition includes a condition in which the distance between the first point (eg, c in FIG. 6 ) and the cutting edge of the opposing tooth is equal to or less than a preset value, and, for example, the difference in position of the tooth according to this condition is In the central occlusion state, the first point (e.g., c in FIG. 6) corresponding to the uppermost point on the mesial side of the mandible (see identification number 610) and the horizontal distance between the maxillary antagonist incisal edge according to the anterior occlusion movement becomes zero It is determined according to the positional difference of the first point (eg, c' in FIG. 6) corresponding to the uppermost point on the mesial side of the lower jaw (see identification number 620), and the movement path of the teeth is determined by the first point before and after the forward movement. It may be determined according to a line (or horizontal distance) connecting locations (eg, connecting between c and c' in FIG. 6 ).

Referring to FIG. 7 , the processor 120 may determine a movement path of a plurality of teeth according to the right movement of the lower jaw (or upper jaw) based on the central occlusion state based on a plurality of points. For example, first position information of a plurality of points (eg, a, b, and c in FIG. 7) located on the lower jaw in a central occlusion state and a plurality of points (eg, FIG. According to the comparison result with the third position information of a'', b'', and c'' of Fig. 7, a positional difference and a movement path of the teeth may be generated for each point.

In one embodiment, the processor 120 may determine the movement path of the plurality of teeth by analyzing the right movement that satisfies the right movement boundary condition. In one embodiment, the right motion boundary condition includes a condition in which the distance between the second point (eg, a in FIG. 7 ) and the maxillary buccal cusp is equal to or less than a preset value, and, for example, the difference in position of the teeth according to this condition is the center In the occlusion state, the horizontal distance between the buccal cusp of the maxillary antagonist tooth according to the movement of the second point (e.g., Fig. 7 a) corresponding to the distal buccal cusp point (see identification number 710) of the lower right rearmost tooth in the occlusion state is 0 It is determined according to the positional difference of the second point (e.g., a'' in FIG. 7) corresponding to the distal buccal cusp point (see identification number 720) of the lower right rearmost tooth when It may be determined according to a line (or horizontal distance) connecting the positions of the front and rear second points (eg, connecting between a and a″ in FIG. 7 ).

Referring to FIG. 8 , the processor 120 may determine a movement path of a plurality of teeth according to the left movement of the lower jaw (or upper jaw) based on the central occlusion state based on a plurality of points. For example, first position information of a plurality of points (eg, a, b, and c in FIG. 8) located on the lower jaw in a central occlusion state, and a plurality of points (eg, FIG. According to the comparison result with the fourth position information of a''', b''', and c''' of Fig. 8, a difference in position and a movement path of the tooth may be generated for each point.

In an embodiment, the processor 120 may determine movement paths of a plurality of teeth by analyzing left movement that satisfies the left movement boundary condition. In one embodiment, the left motion boundary condition includes a condition in which the distance between the third point (eg, b in FIG. 8 ) and the upper buccal cusp is equal to or less than a preset value, and, for example, the difference in position of the teeth according to this condition is the center In the occlusion state, the horizontal distance between the buccal cusp of the maxillary antagonist tooth according to the left occlusion movement and the second point (e.g., b in Fig. It is determined according to the positional difference of the second point (e.g., b''' in FIG. 8) corresponding to the distal buccal cusp point (see identification number 820) of the lowermost left uppermost tooth when the teeth are moved to the left. It may be determined according to a line (or horizontal distance) connecting the positions of the third point before and after (eg, between b and b''' in FIG. 8).

In one embodiment, the boundary condition may include a condition in which the horizontal distance in at least one of the anterior, right, and left directions is a preset second value when the upper and lower horizontal distances are equal to or less than a preset first value in the centric occlusion state. there is. For example, the processor 120 may determine the horizontal distance between the distal buccal cusp point of the left rearmost tooth of the lower jaw and the buccal cusp of the upper jaw opposing tooth in central occlusion is 0 or a negative (-) value (e.g., Cross Bite), Until the horizontal distance in the left direction with respect to the distal buccal cusp of the left rearmost tooth reaches a preset value (eg, 2 mm), the boundary condition can be set. In one embodiment, the second value is greater than the first value.

In step S250, the processor 120 may determine the organization of the occlusion of the object based on the determined movement paths of the plurality of teeth. For example, the processor 120 determines whether each tooth is in contact with an opposing tooth (or an adjacent tooth) in the process of moving the mandible left and right, the process of moving the mandible forward, the contact area for each region, the intensity of contact, and the movement path. By analyzing the occlusion, one of a plurality of occlusion forms may be determined as the occlusion form for the object.

In one embodiment, the plurality of occlusion types may include at least one of mutual protection occlusion (canine guidance occlusion), unilateral balanced occlusion (group function occlusion), and bilateral balanced occlusion. there is. Embodiments related to this will be described in more detail with further reference to FIGS. 9 to 11 .

9 to 11 are views for explaining an operation of the device 100 according to an exemplary embodiment to determine the occlusion type of the object as mutual protection occlusion, unilateral balanced occlusion, and bilateral balanced occlusion.

Referring to FIG. 9, the mutual protection occlusion represents an occlusion form in which the posterior teeth are separated due to the vertical and horizontal relationship of the canines during forward movement and lateral movement, for example, the contact point of the posterior teeth due to the vertical and horizontal relationships of the canines. It can respond to occlusal forms that do not occur. In one embodiment, the mutual protection occlusion is an ideal occlusal equilibrium state for the natural dentition, and can be applied to a patient in a normal occlusion state as a good periodontal state of the anterior teeth is required.

In one embodiment, the processor 120 may determine the occlusion state as a mutual protection occlusion when only the canines are in contact and the rest are not in contact based on the right and left movements of the lower jaw (or upper jaw). For example, if the artificial teeth to be restored (e.g., prosthesis) correspond to the posterior teeth, the situation in which the teeth touch each other in the process of moving the mandible left and right is analyzed, and only the 3rd tooth touches and the 4th, 5th, and 6th teeth do not touch. In this case, the occlusion status can be determined as mutual protection occlusion.

Referring to FIG. 10, the unilateral balanced occlusion represents an occlusion form in which a plurality of teeth that distribute the occlusal force during forward movement and lateral movement are in simultaneous contact, for example, both the anterior and posterior teeth have contact points, but the working side (eg: direction of movement) may correspond to an occlusal form in which occlusal contact is made but the non-working side (e.g., in the opposite direction to the direction of movement) does not make contact. In one embodiment, the unilateral balanced occlusion represents an occlusal equilibrium state of a natural tooth in which attrition has progressed.

In one embodiment, the processor 120 may determine the occlusion state as one-sided balanced occlusion when several teeth are in simultaneous contact in one posterior tooth based on the right and left movements of the lower jaw (or upper jaw). For example, if the artificial tooth to be restored (eg prosthetic appliance) corresponds to the posterior teeth, the situation in which the teeth touch each other in the process of moving the mandible left and right is analyzed, and when the 4th, 5th, and 6th teeth touch each other, the occlusion condition is determined. It can be determined as a unilateral balanced occlusion.

Referring to FIG. 11, the bilateral balanced occlusion represents an occlusion form in which the cusps on the balancing side of the posterior teeth contact together when the cusps on the working side of the posterior teeth come into contact. Both working sides can respond to the form of occlusal contact. In one embodiment, the bilateral balanced occlusion may represent an artificial occlusion form given to patients with complete dentures. In one embodiment, the working side indicates the movement direction (eg, the moving side during lateral movement), and the balance side indicates a direction symmetrical with respect to the oral center point or center plane.

In one embodiment, the processor 120 may determine the occlusion state as a bilateral balanced occlusion when several teeth are in simultaneous contact in both posterior teeth based on the right and left movements of the lower jaw (or upper jaw). For example, when the artificial teeth to be restored (e.g., prosthesis) correspond to the posterior teeth, when teeth 4, 5, and 6 touch each other on both sides by analyzing the situation in which teeth touch each other in the process of moving the mandible left and right, occlusion The condition can be determined as a unilateral balanced occlusion.

In step S250, the processor 120 may generate modeling data of an artificial tooth (eg, a prosthesis) for the object based on the determined occlusion shape. Modeling data of the artificial teeth may be generated and updated so that the occlusion area with the antagonist tooth, contact with the adjacent tooth, contact area, and contact strength for each tooth are within a set range corresponding to the corresponding occlusion type.

In one embodiment, the processor 120 may generate modeling data of the artificial tooth so that a contact point is not generated in the posterior teeth during forward movement and lateral movement when the occlusion form is determined as mutual protection occlusion. For example, if the artificial tooth to be restored (eg, a prosthesis) is a posterior tooth and it is determined as a mutual protection occlusion, 3D modeling data including the size, shape and position of the artificial tooth corresponding to the posterior tooth is generated using the basic library. Afterwards, the size, shape, and position of artificial teeth (eg, prosthesis) can be updated so that contact points are not formed in the posterior teeth when the mandible is moved forward and left and right. For another example, 3D modeling data including the size, shape and position of artificial teeth suitable for mutual protection occlusion may be generated using the first library corresponding to posterior teeth (or tooth numbers) and mutual protection occlusion.

In one embodiment, the processor 120, when the occlusion type is determined as a one-sided balanced occlusion, modeling data of the artificial tooth so that the occlusal point of the same strength as the posterior tooth adjacent to the tooth is generated at the time of forward movement and lateral movement. can create For example, if the artificial tooth (eg, prosthesis) to be restored is a posterior tooth and it is determined as a one-sided balanced occlusion, modeling data including the size, shape, and position of the artificial tooth corresponding to the posterior tooth is generated using the basic library, and then , When the mandible is moved forward and left and right, the size, shape, and position of artificial teeth (eg, prosthesis) may be updated so that an occlusal point having the same strength as a predetermined number of peripheral teeth adjacent to the posterior teeth is formed. For another example, modeling data including the size, shape, and position of artificial teeth suitable for unilateral balanced occlusion may be generated using the second library corresponding to posterior teeth (or tooth numbers) and unilateral balanced occlusion.

In one embodiment, the processor 120 may update modeling data of the artificial tooth based on the occlusion shape and the interference region during dynamic movement. Embodiments related to this will be described in more detail with further reference to FIGS. 12 and 13 .

12 and 13 illustrate an operation of updating modeling data according to an interference region during dynamic movement when the occlusion type of the object is a mutual protection occlusion and a unilateral balanced occlusion, respectively, by the device 100 according to an embodiment. It is a drawing for

Referring to FIG. 12(a) , when the occlusion type is mutual protection occlusion, the processor 120 determines whether an interference area that interferes with the movement of the teeth at a predetermined level or more during the forward movement, left movement, and right movement of the object is present. can decide For example, when modeling data of virtual teeth (eg, prosthesis) according to mutual protection occlusion is generated, the processor 120 performs virtual dynamic occlusion using modeling data of virtual teeth (eg, prosthesis) and dynamic occlusion data. The movement can be simulated, and a virtual movement path according to the horizontal movement and forward movement of one or more cusps and fossa included in each tooth is analyzed according to the simulation result, so that adjacent teeth are adjacent within a preset distance or have a preset length on the virtual movement path. In the case of overlapping abnormally or interfering with movement at or above a predetermined level, the corresponding region may be determined as an interference region in which there is interference by neighboring teeth.

Referring to FIG. 12(b), the processor 120 performs forward movement, right movement, and left movement when the occlusion type is mutual protection occlusion and the first predetermined number (eg, 1) or more interference regions exist. Modeling data may be updated by deleting a predetermined first thickness (eg, 30 μm) or more from the thickness of the interference region of . Accordingly, it is possible to obtain updated modeling data so that a contact point with an adjacent tooth is not formed on the virtual tooth during a virtual dynamic occlusion movement.

In one embodiment, the processor 120 may maintain the shape of the virtual tooth appearing in the modeling data when the occlusion type is the mutual protection occlusion and the number of interference areas is less than a predetermined first number (eg, 1). there is.

In an embodiment, when the occlusion type is a one-sided balanced occlusion, the processor 120 may determine whether there is an interference region that interferes with the movement of the teeth by a predetermined level or more when the object moves to the left and to the right. For example, when modeling data of a virtual tooth (eg, a prosthesis) according to unilateral balanced occlusion is generated, the processor 120 may detect the presence or absence of an interference region by simulating a virtual dynamic occlusion movement as described above. .

Referring to FIG. 13 , the processor 120 determines that, when the occlusion type is a one-sided balanced occlusion and there are a predetermined second number (eg, 1) or more of the interference areas, adjacent values to the interference areas during right and left movements are present. The modeling data may be updated by deleting the second thickness or more from the thickness of the interference region so that the contact point is formed with the same or similar intensity as the predetermined level or more. Accordingly, it is possible to obtain updated modeling data so as to contact the virtual tooth with the same or similar strength as the adjacent tooth during the virtual dynamic occlusion movement.

In one embodiment, the processor 120 determines the posterior buccal area in the left motion boundary condition or the right motion boundary condition when the occlusion type is unilateral balanced occlusion and the interference area is less than the second predetermined number (eg, 1). The length of the buccal cusps of the posterior teeth may be extended beyond a predetermined length so that the cusps come into contact with the antagonist teeth, and at this time, the balancing side may update modeling data so that no occlusion point is created.

In step S270, the processor 120 may output a message inquiring whether to update the occlusion shape, and for example, a 3D modeling image including modeling data of a virtual tooth (eg, a prosthesis) generated according to the occlusion shape. , information on the occlusion type applied to the modeling data and the message may be displayed together.

In one embodiment, the processor 120 may output an occlusion type list including information on an occlusion type and one or more recommended occlusion types together with the message. For example, as shown in FIG. 14, a first occlusal shape (eg, occlusal shape 1), which is an occlusal shape applied to modeling data of a currently displayed artificial tooth (eg, prosthesis), and a recommendation that can be updated according to a user's selection input. An occlusal type list for a second occlusal type (eg, occlusal type 2), which is an occlusal type, may be displayed.

In one embodiment, the processor 120 may determine one or more recommended occlusion types based on the occlusion shape suitability indicating the degree to which the analysis result of the movement path corresponds to each occlusion shape. For example, the degree of conformity of occlusion shape is determined by determining whether or not the occlusion shape of the object is in contact with the antagonist tooth (or adjacent tooth), the contact area for each region, the contact strength, and the analysis situation of the movement path in the process of determining the occlusion shape of the object in step S250. It can be determined through a process of quantifying the degree of correspondence with each shape.

In an embodiment, the processor 120 may display an occlusion shape list in which the occlusion shape and the recommended occlusion shape are arranged in the order of highest occlusion shape suitability. In one embodiment, the degree of conformity of the occlusion shape may be determined based on different weights given in the order of contact with the antagonist tooth (or adjacent tooth), contact area for each region, contact intensity, and movement path.

In step S280, the processor 120 may update the occlusion shape according to the response to the message, and may update modeling data using the updated occlusion shape in step S290. For example, the processor 120 may update modeling data of a virtual tooth (eg, a prosthesis) by applying a recommended occlusion shape selected according to a user's selection input, and display the updated modeling data. For another example, the processor 120 displays a first 3D modeling image including the modeling data of the artificial tooth before update and a second 3D modeling image including the modeling data of the artificial tooth after the update, so that from the user's point of view An interface that facilitates intuitive comparison may be provided.

In one embodiment, when displaying modeling data of a virtual tooth (eg, a prosthesis), the processor 120 may superimpose and display one or more occlusion points on the modeling data. For example, as shown in FIG. 14, When the corresponding occlusal shape is applied, one or more occlusal points and occlusal areas occluded with the antagonist in the central occlusal state may be visually displayed on the surface of the prosthesis shape.

In one embodiment, when a user's selection input for the recommended occlusion shape is received, the processor 120 determines the current occlusion shape (eg, occlusion shape 1) on the modeling data of the virtual tooth (eg, prosthesis). The first intersection point 1510 and the second intersection point 1520 when the recommended occlusal shape (eg, occlusal shape 2) is applied may be visually displayed to be distinguished from each other. For example, as shown in FIG. 15 , the first intersection point 1510 and the second intersection point 1520 may be visualized in different colors or display methods.

In one embodiment, the processor 120 applies the recommended occlusion shape (eg, occlusion shape 2) when a user's request to update the modeling data of the artificial teeth is received according to the selected recommended occlusion shape. The modeling data of the tooth (eg, prosthesis) is updated (see FIG. 16), and the third occlusion 1710 according to the occlusal shape after update (eg, occlusal shape 2) and the occlusal shape before renewal are determined on the updated modeling data. The fourth intersection point 1720 may be visually displayed to be distinguished from each other (see FIG. 17). For example, the third intersection point 1710 and the fourth intersection point 1720 may be visualized in different colors.

In one embodiment, the processor 120 may determine a recommendation score for the occlusion shape before and after the update and display the result along with the updated modeling data. In one embodiment, dynamic occlusion data is applied to the modeling data before update and the modeling data before update, respectively, to perform a virtual simulation for forward motion, right motion, and left motion to determine the number of detected interference areas and the removal of interference areas. Recommendation scores for the occlusion shape before and after the update can be calculated based on the prepared area and the degree of conformity of the occlusal shape required for removal. The higher the fit, the higher the occlusion shape fit, the higher the recommendation score.

In one embodiment, the receiving unit 110 may include a receiver for receiving information described throughout the specification, and may include a wired and wireless communication device capable of transmitting and receiving various information by being connected to other devices or components through a network. . In addition, the processor 120 may perform a series of operations for providing modeling data of the artificial tooth, may be implemented as a central processor unit (CPU) that controls overall operations of the device 100, and the receiver 110 ) and other components to control data flow between them.

In addition, those of ordinary skill in the art may understand that other general-purpose components may be further included in the device 100 in addition to the components shown in FIG. 1 . According to an embodiment, the device 100 further includes an algorithm for processing 3D image data, a storage module for storing data, a user interface receiving module for receiving a user input, and a display for displaying the above-described information. can do.

18 is a flowchart illustrating a method of providing, by the device 100, modeling data of an artificial tooth for an object, according to an exemplary embodiment.

Referring to FIG. 18 , in step S1810, when the object is in a static occlusion state, the device 100 may obtain static occlusion data representing positions of a plurality of teeth included in the object and dynamic occlusion data representing the movement of the object.

In step S1820, the device 100 may determine movement paths for a plurality of teeth by using the static occlusion data and the dynamic occlusion data.

In step S1830, the device 100 may determine the occlusion shape of the object based on the determined movement path.

In step S1840, the device 100 may provide modeling data of the artificial tooth determined based on the determined occlusion shape.

In one embodiment, the device 100 outputs a message inquiring whether to update the occlusion shape, updates the occlusion shape according to a response to the message, and updates and provides modeling data based on the updated occlusion shape. can

According to an embodiment of the present invention, the device 100 may provide modeling data of a prosthesis suitable for the patient's occlusion shape by analyzing the patient's dynamic occlusion movement, and the occlusion shape applied to the modeling data and the resulting occlusion point may be determined by the user. User convenience can be improved by providing a user interface that can be easily checked and changed easily.

In some drawings, for convenience of explanation, the shape of the artificial tooth is shown in two dimensions, but it may include an embodiment in which the shape of the artificial tooth is expressed in three dimensions based on 3D modeling data. Accordingly, the shape of the artificial tooth at an individual position Values for various items such as , size and position can be determined and modified. In addition, throughout the specification, the expression “providing” information may include an operation of displaying or transmitting/receiving corresponding information. In addition, some of the above-described operations may be implemented in various modified forms in terms of order, function, and branching.

On the other hand, the above-described method can be written as a program that can be executed on a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable recording medium. In addition, the structure of data used in the above-described method can be recorded on a computer-readable recording medium through various means. The computer-readable recording medium includes storage media such as magnetic storage media (eg, ROM, RAM, USB, floppy disk, hard disk, etc.) and optical reading media (eg, CD-ROM, DVD, etc.) do.

Those skilled in the art related to this embodiment will be able to understand that it can be implemented in a modified form within a range that does not deviate from the essential characteristics of the above description. Therefore, the disclosed methods are to be considered in an illustrative rather than a limiting sense. The scope of the present disclosure is shown in the claims rather than the foregoing description, and all differences within the equivalent scope will be construed as being included in the present disclosure.

100: device
110: receiver
120: processor

Claims (19)

A method for providing modeling data of an artificial tooth for an object,
obtaining static occlusion data representing positions of a plurality of teeth included in the object and dynamic occlusion data representing a motion of the object when the object is in a static occlusion state;
determining a movement path representing an actual movement of the plurality of teeth according to movements of the upper and lower jaws included in the object by using the static occlusion data and the dynamic occlusion data;
determining an occlusion shape of the object based on the movement path; and
A method comprising: providing the modeling data determined based on the occlusion form.
According to claim 1,
outputting a message inquiring whether or not to update the occlusion shape;
updating the occlusion shape according to a response to the message; and
The method further comprising: updating and providing the modeling data based on the updated occlusion form.
According to claim 1,
The step of determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data
determining a plurality of points used to determine movement paths for the plurality of teeth based on the static occlusion data; and
and determining a movement path of the plurality of teeth by analyzing forward, right, and left movements of the object appearing in the dynamic occlusion data based on the plurality of points.
According to claim 3,
The plurality of points include at least one of a first point corresponding to the mesial end of the anterior teeth, a second point corresponding to the distal buccal end of the right posterior teeth, and a third point corresponding to the distal buccal end of the left posterior teeth. .
According to claim 4,
The step of determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data
Further comprising: determining a movement path of the plurality of teeth based on the forward movement that satisfies a forward movement boundary condition;
The forward motion boundary condition includes a condition in which a distance between the first point and the antagonist cutting edge is equal to or less than a preset value.
According to claim 4,
The step of determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data
Further comprising: determining a movement path of the plurality of teeth based on the right movement that satisfies a right movement boundary condition;
The right motion boundary condition includes a condition in which a distance between the second point and the buccal cusp of the opposing tooth is equal to or less than a preset value.
According to claim 4,
The step of determining a movement path for the plurality of teeth using the static occlusion data and the dynamic occlusion data
Further comprising: determining a movement path of the plurality of teeth based on the left movement that satisfies a left movement boundary condition;
The left motion boundary condition includes a condition in which a distance between the third point and the buccal cusp of the opposing tooth is equal to or less than a preset value.
According to claim 1,
The occlusion form is
Mutual protective occlusion representing an occlusion form in which the posterior teeth are separated by vertical and horizontal relationships of the canine teeth during the anterior movement and lateral movement of the object shown in the dynamic occlusion data, and a plurality of teeth for distributing the occlusal force during the forward movement and the lateral movement At least one of a unilateral balanced occlusion representing an occlusion form in which the teeth are in simultaneous contact and a bilateral balanced occlusion representing an occlusion form in which the cusps on the balancing side of the posterior teeth contact together when the cusps on the working side of the posterior teeth contact.
According to claim 8,
Providing the modeling data determined based on the occlusion form
When the occlusion form is determined as the mutual protection occlusion, obtaining the modeling data so that a contact point is not generated in the posterior teeth during the forward movement and the lateral movement.
According to claim 9,
Providing the modeling data determined based on the occlusion form
When the occlusion type is the mutual protection occlusion,
Determining whether or not there is an interference region interfering with the movement of the tooth at a predetermined level or more during the forward movement and the lateral movement; and
If the interference region is equal to or greater than a preset first number, updating the modeling data by deleting a preset first thickness or more from the thickness of the interference region during the forward movement and the lateral movement; .
According to claim 8,
Providing the modeling data determined based on the occlusion form
When the occlusion form is determined to be the unilateral balanced occlusion, obtaining the modeling data so that the posterior teeth generate an occlusion point of the same intensity as the adjacent teeth at the time of the forward movement and the lateral movement, method.
According to claim 11,
Providing the modeling data determined based on the occlusion form
When the occlusion form is the unilateral balanced occlusion,
Determining whether or not there is an interference region interfering with the movement of the tooth at a predetermined level or more during the forward movement and the lateral movement; and
If the interference area is equal to or greater than the preset second number, the thickness of the interference area during the lateral movement is set at a predetermined thickness so that a contact point is formed with the same or similar strength as the adjacent tooth at a predetermined level or higher in the interference area during the lateral movement. Further comprising, updating the modeling data by deleting the second thickness or more.
According to claim 2,
The step of outputting a message inquiring whether to update the occlusion shape
determining one or more recommended occlusion shapes based on the degree of occlusion shape suitability; and
outputting an occlusion form list including information on the occlusion form and one or more recommended occlusion forms together with the message;
The fit of the occlusion shape is
The method is determined based on weights given high in the order of contact with the antagonist, contact area for each region, contact intensity, and the movement path.
In a device for providing modeling data of an artificial tooth for an object,
a receiver configured to obtain static occlusion data representing positions of a plurality of teeth included in the object and dynamic occlusion data representing motion of the object when the object is in a static occlusion state; and
A movement path representing the actual movement of the plurality of teeth according to the movements of the upper and lower jaws included in the object is determined using the static occlusion data and the dynamic occlusion data, and the occlusion shape of the object is determined based on the movement path. And a processor for determining and providing the modeling data determined based on the occlusion form.
15. The method of claim 14,
The processor
Outputting a message inquiring whether to update the occlusion form,
Updating the occlusion shape according to a response to the message;
A device for updating and providing the modeling data based on the updated occlusion form.
15. The method of claim 14,
The processor
determining a plurality of points used for determining a movement path for the plurality of teeth based on the static occlusion data;
A device for determining a movement path of the plurality of teeth by analyzing forward movement, right movement, and left movement of the object appearing in the dynamic occlusion data based on the plurality of points.
17. The method of claim 16,
The plurality of points include at least one of a first point corresponding to the mesial end of the anterior teeth, a second point corresponding to the distal buccal end of the right posterior teeth, and a third point corresponding to the distal buccal end of the left posterior teeth. .
15. The method of claim 14,
The occlusion form is
Mutual protective occlusion representing an occlusion form in which the posterior teeth are separated by vertical and horizontal relationships of the canine teeth during the anterior movement and lateral movement of the object shown in the dynamic occlusion data, and a plurality of teeth for distributing the occlusal force during the forward movement and the lateral movement A device comprising at least one of a unilateral balanced occlusion representing an occlusion form in which teeth are in simultaneous contact and a bilateral balanced occlusion representing an occlusion form in which the cusps on the balancing side of the posterior teeth contact together when the cusps on the working side of the posterior teeth contact each other.
A computer-readable recording medium recording a program for executing the method of any one of claims 1 to 13 in a computer.

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