KR20220120159A - Method, device and recording medium for providing modeling data of artificial teeth for an object - Google Patents

Abstract

According to one embodiment of the present invention, disclosed are a method, device and recording medium, wherein by analyzing a central occlusion state and dynamic occlusion movement of an object to determine the occlusion form of the object, it is possible to provide modeling data of an artificial tooth with an occlusion form suitable for a user, and the user can easily check and change the occlusion form, and thus user convenience can be improved by providing a user interface.

Description

Method, device and recording medium for providing modeling data of artificial teeth for an object

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

In the related art, when designing a prosthesis, it is difficult to analyze and measure the occlusal state of adjacent teeth, so it is difficult to reflect the occlusal state of the adjacent teeth.

Accordingly, in the prior art, the prosthesis is designed in a central occlusal state, which is a static occlusal state, or the prosthesis is manufactured through occlusal movement movement through numerical values entered into the articulator, such as a virtual articulator, rather than a patient-specific dynamic occlusal movement. method was used.

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

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

The present disclosure may provide a method, a device, and a recording medium for providing modeling data of artificial teeth for an object. Specifically, as the occlusal shape of the object is determined by analyzing the central occlusal state and dynamic occlusal movement of the object, modeling data of artificial teeth to which the occlusal shape suitable for the user is applied can be provided, and the user can easily check the occlusal shape. 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 as described above, and various technical problems may be further included within the scope obvious to those skilled in the art.

The method of providing modeling data of artificial teeth for an object according to the first aspect of the present disclosure includes static occlusion data indicating 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 occlusal data representing; determining movement paths for the plurality of teeth by using the static occlusion data and the dynamic occlusion data; determining an occlusal shape of the object based on the movement path; and providing the modeling data determined based on the occlusion shape.

In addition, the method includes: outputting a message inquiring whether to update the occlusal shape; updating the occlusion shape according to a response to the message; and updating and providing the modeling data based on the updated occlusion shape.

In addition, the determining of the movement path for the plurality of teeth by using the static occlusion data and the dynamic occlusion data includes a plurality of points used to determine the movement path for the plurality of teeth based on the static occlusion data. determining a; and determining a movement path of the plurality of teeth by analyzing a forward movement, a right movement, and a left movement 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 part, a second point corresponding to the distal buccal end of the right posterior part, and a third point corresponding to the distal buccal end of the left posterior part. can

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

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

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

In addition, the occlusal shape is a mutual protection occlusion indicating an occlusal shape in which the molars are separated by the vertical and horizontal relationship of the canines during the forward and lateral movements of the object shown in the dynamic occlusion data, the forward movement and the lateral movement. At least one of a unilateral balanced occlusion indicating an occlusal form in which a plurality of teeth dispersing occlusal force is in simultaneous contact and a bilateral balanced occlusion indicating an occlusal form in which the cusps on the posterior balance side come into contact when the cusps on the posterior working side are in contact. can do.

In addition, in the step of providing the modeling data determined based on the occlusion shape, when the occlusal shape is determined to be the mutual protection occlusion, the modeling data is used so that a contact point is not generated in the posterior region during the forward movement and the lateral movement. It may include the step of obtaining.

In addition, the step of providing the modeling data determined based on the occlusal shape may include, when the occlusal shape is the mutual protection occlusion, an interference region that interferes with the movement of the teeth during the forward movement and the lateral movement by more than a preset level. determining the presence or absence; and updating the modeling data by deleting more than a preset first thickness from the thickness of the interference region during the forward movement and the lateral movement when the number of interference regions is greater than or equal to a preset first number. have.

In addition, in the step of providing the modeling data determined based on the occlusal shape, when the occlusal shape is determined as the unilateral balanced occlusion, the posterior portion is the same as the adjacent teeth during the forward movement and the lateral movement by a preset level or more. The method may include acquiring the modeling data so that an occlusal point of intensity is generated.

In addition, the step of providing the modeling data determined based on the occlusal shape may include, when the occlusal shape is the unilateral balanced occlusion, an interference region that interferes with the movement of teeth during the forward and lateral movements by more than a preset level. determining the presence or absence; and if the number of interference regions is greater than or equal to the second preset number, the thickness of the interference region during the lateral movement is determined so that a contact point is formed with the same or similar strength to the adjacent tooth and the preset level or more in the interference region during the lateral movement. The method may further include: updating the modeling data by deleting more than a set second thickness.

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

The device for providing modeling data of artificial teeth for an object according to the second aspect of the present disclosure provides static occlusion data indicating positions of a plurality of teeth included in the object when the object is in a static occlusion state and the movement of the object. a receiving unit for obtaining dynamic occlusion data representing; and determining a movement path for the plurality of teeth by using the static occlusion data and the dynamic occlusion data, determining an occlusal shape of the object based on the movement path, and determining the modeling data based on the occlusal 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 in response to the message, and update and provide the modeling data based on the updated occlusion shape. have.

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 a forward movement of the object shown in the dynamic occlusion data based on the plurality of points, The movement path of the plurality of teeth may be determined by analyzing the right movement and the left movement.

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

In addition, the occlusal shape is a mutual protection occlusion indicating an occlusal shape in which the molars are separated by the vertical and horizontal relationship of the canines during the forward and lateral movements of the object shown in the dynamic occlusion data, the forward movement and the lateral movement. At least one of a unilateral balanced occlusion indicating an occlusal form in which a plurality of teeth dispersing occlusal force is in simultaneous contact and a bilateral balanced occlusion indicating an occlusal form in which the cusps on the posterior balance side come into contact when the cusps on the posterior working side are in contact. 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 on 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 occlusal shape suitable for a user is applied may be provided.

In addition, it is possible to improve user convenience by providing a user interface through which the user can easily check and change the occlusal shape.

The effects of the present disclosure are not limited to the above effects, but it 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 artificial teeth to an object according to an exemplary embodiment.
3 to 4 are diagrams exemplarily showing static occlusal data and dynamic occlusal data obtained by a device according to an exemplary embodiment.
5 is a diagram for describing an operation in which a device determines a plurality of points by using static occlusion data according to an exemplary embodiment.
6 to 8 are diagrams for explaining an operation in which a device according to an embodiment analyzes a forward motion, a right motion, and a left motion of an object appearing in dynamic occlusion data based on a plurality of points, respectively.
9 to 11 are diagrams for explaining an operation in which a device determines an occlusion shape of an object as a mutual protection occlusion, a unilateral balanced occlusion, and a bilateral balanced occlusion according to an exemplary embodiment.
12 to 13 are diagrams for explaining an operation of a device updating modeling data according to an interference region during dynamic movement when the occlusion shape of the object is a mutual protection occlusion and a unilateral balanced occlusion, respectively, according to an embodiment; to be.
14 to 17 are diagrams for explaining an operation of updating the occlusal shape and modeling data in response to a message inquiring whether the device updates the occlusal shape or not, according to an exemplary embodiment.
18 is a flowchart illustrating a method in which the device 100 provides modeling data of artificial teeth to an object according to an exemplary embodiment.

Terms used in the embodiments are selected as currently widely used general terms as possible while considering functions in the present disclosure, but may vary depending on intentions or precedents of those of ordinary skill in the art, emergence of new technologies, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present disclosure should be defined based on the meaning of the term and the contents of the present disclosure, rather than the simple name of the term.

In the entire specification, when a part “includes” a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated. In addition, the “… wealth", "… The term “module” means a unit that processes at least one function or operation, which 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 of ordinary skill in the art to which the present disclosure pertains can easily implement them. However, the present disclosure may be implemented in several 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 the configuration of a device 100 according to an embodiment, and FIG. 2 is a method for the device 100 according to an embodiment to provide modeling data of artificial teeth for an object. It is a flow chart showing

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

In operation S210 , the receiver 110 may acquire static occlusion data for the object. Here, the static occlusion data may indicate the positions of a plurality of teeth included in the object when the object (eg, the maxilla and the mandible of the patient) is in a static occlusion state, for example, the patient's maxilla and mandible are the most stable occlusion. It may include positional information and shape information of a plurality of teeth included in the maxilla and/or mandible of a patient in a centric occlusion state indicating a state of a relationship.

In an embodiment, the static occlusion data may include 3D scan data of an object (eg, a patient's mouth) (see FIG. 3 ), and maxillary scan data obtained through scanning of the patient's maxilla and mandible; It may further include mandibular scan data.

In operation S220 , the receiver 110 may acquire dynamic occlusion data for the object. Here, the dynamic occlusion data may indicate the movement of the object (eg, the maxilla and the mandible of the patient), and for example, a plurality of teeth included in the maxilla and/or the mandible of the patient may move in a specific direction in the central occlusion state. When time passes, it may include position information and shape information of a plurality of teeth.

In an embodiment, the dynamic occlusion data may include at least one of a forward movement, a right movement, and a left movement with respect to the oral cavity based on the central occlusion state of the object. And it may include three-dimensional scan data recording the moment when the maxillary tooth and the mandibular tooth contact and do not contact when each moved to the left (see FIG. 4 ). In an embodiment, each of the forward movement, the right movement, and the left movement may be performed within the range of the limit movement.

In one embodiment, the processor 120 may obtain static occlusion data or dynamic occlusion data by recording the central occlusion state of the maxilla and the mandible or movement in the patient's mouth in a digital scanning manner using an oral scanner, The present invention is not limited thereto. After taking an impression using an impression material, scan the impression body, or pour plaster into the impression body to make a plaster model, and then acquire static occlusal data by scanning the plaster model or by using a camera-based shooting method. Dynamic occlusion data may be obtained by photographing the patient's tooth movement. In an embodiment, the receiver 110 may receive static occlusion data and/or dynamic occlusion data from an intraoral scanner (or an external device) through a wired/wireless communication module or from a pre-stored memory.

In operation S230, the processor 120 may match the static occlusion data and the dynamic occlusion data. For example, in the static occlusal data and the dynamic occlusal data, the processor 120 sets a preset specific number (eg, 3) of reference teeth (eg, right angle, anterior and both molars, 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 mandible (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 the plurality of teeth. Various embodiments related thereto will be described in more detail with further reference to FIGS. 5 to 8 .

5 is a diagram for explaining an operation in which the device 100 determines a plurality of points using static occlusion data, according to an embodiment, and FIGS. 6 to 8 are diagrams of the device 100 according to an embodiment. It is a diagram for explaining an operation of respectively analyzing a forward movement, a right movement, and a left movement of an object appearing in the 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 the static occlusion data, for example, in a central occlusion state shown in the static occlusion data. It is possible to determine a specific number (eg, three) of points (eg, a, b, c) at a specific point in the mandible (or maxilla). In an embodiment, the plurality of teeth may include teeth corresponding to the plurality of points.

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

In an embodiment, the processor 120 may analyze the forward movement, the right movement, and the left movement of the object appearing in the dynamic occlusion data based on a plurality of points, respectively. For example, in the process of acquiring dynamic occlusal data by scanning the dynamic occlusal movement of the patient, the movement path of three points set in the mandible may be scanned by dividing the forward movement, the right movement, and the left movement. In addition, based on the preset boundary condition, the movable range is set during dynamic occlusal movement, and the movement of three preset points during dynamic movement in the dynamic occlusion data and the central occlusal state in the static occlusion data is matched for dynamic occlusion. It is possible to derive the dynamic occlusal movement of the patient within the movable range during movement.

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

In an embodiment, the processor 120 may determine a movement path of the plurality of teeth by analyzing a forward movement that satisfies a 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 opposing incisal edge is less than or equal to a preset value, for example, the position difference of the teeth according to this When the horizontal distance from the first point (eg, in FIG. 6 c) corresponding to the uppermost point on the anterior mesial side of the mandible (refer to identification number 610) and the front occlusal movement in the central occlusion state becomes 0 is determined according to the difference in the position of the first point (eg, c' in FIG. 6 ) corresponding to the uppermost point (see identification number 620) on the mandibular anterior mesial side of It may be determined according to a line (or horizontal distance) connecting the positions (eg, connecting between c and c' in FIG. 6 ).

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

In an embodiment, the processor 120 may determine a movement path of a plurality of teeth by analyzing a right movement that satisfies a right movement boundary condition. In an embodiment, the right movement boundary condition includes a condition in which the distance between the second point (eg, in FIG. 7 a ) and the maxillary buccal cusp is equal to or less than a preset value, for example, the difference in the position of the teeth according to this is the center In the occlusal state, the horizontal distance between the buccal cusp of the maxillary opposing tooth is 0 according to the second point (for example, in FIG. 7 a) and the right occlusal movement corresponding to the distal buccal cusp point (refer to identification number 710) of the mandibular right most posterior tooth. It is determined according to the difference in the position of the second point (eg, a'' in FIG. 7 ) corresponding to the distal buccal cusp point (refer to identification number 720) of the mandibular right most posterior tooth when the tooth is moved to the right. It may be determined according to a line (or horizontal distance) connecting the positions of the front and back second points (eg, connecting between a and a'' in FIG. 7 ).

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

In an embodiment, the processor 120 may determine the movement path of the plurality of teeth by analyzing the left movement that satisfies the left movement boundary condition. In an embodiment, the left motion boundary condition includes a condition in which the distance between the third point (eg, b of FIG. 8 ) and the maxillary buccal cusp is less than or equal to a preset value, and for example, the difference in the position of the teeth according to this is the center In the occlusal state, the horizontal distance between the buccal cusp of the maxillary opposing tooth is 0 according to the second point (eg, b in FIG. 8) and the left occlusal movement corresponding to the distal buccal cusp point (refer to identification number 810) of the mandibular leftmost tooth. It is determined according to the difference in the position of the second point (eg, b''' in FIG. 8) corresponding to the distal buccal cusp point (refer to identification number 820) of the mandibular leftmost tooth when It may be determined according to a line (or horizontal distance) connecting the positions of the third point before and after .

In an embodiment, the boundary condition may include a condition that the horizontal distance is a preset second value in one or more of the forward, right and left directions when the maxillary and mandibular horizontal distances are less than or equal to a preset first value in the central occlusion state. have. For example, when the horizontal distance between the distal buccal cusp point of the mandibular left most posterior tooth in central occlusion and the buccal cusp of the maxillary opposing tooth is 0 or a negative (-) value (eg, Cross Bite), the mandible The boundary condition can be set until the horizontal distance in the left direction becomes a preset value (eg, 2 mm) with respect to the distal buccal cusp of the left most posterior tooth. In one embodiment, the second value is greater than the first value.

In operation S250 , the processor 120 may determine an Organization of the Occlusion of the object based on the determined movement paths for the plurality of teeth. For example, the processor 120 determines whether the mandible is in contact with the antagonist (or adjacent teeth) for each tooth in the process of moving the mandible left and right, in the process of moving the mandible forward, the contact area for each area, the contact strength and the movement path. can be analyzed to determine any one of the plurality of occlusal shapes as the occlusal shape for the object.

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

9 to 11 are diagrams for explaining an operation in which the device 100 determines an occlusion shape of an object as a mutual protection occlusion, a unilateral balanced occlusion, and a bilateral balanced occlusion, respectively, according to an exemplary embodiment.

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

In an embodiment, when only the canine teeth are in contact and the rest are not, based on the right and left movements of the mandible (or upper jaw), the processor 120 may determine the occlusion state as a mutual protection occlusion. For example, if the artificial tooth to be restored (eg, prosthesis) corresponds to the posterior part, 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 the 4th, 5th, and 6th teeth. In this case, the occlusion state may be determined as a mutual protection occlusion.

Referring to FIG. 10 , the unilateral balanced occlusion represents an occlusal form in which a plurality of teeth that disperse occlusal force during forward and lateral movements are in simultaneous contact. The direction of movement) can correspond to an occlusal form in which occlusal contact occurs, but the non-working side (eg, in the opposite direction to the direction of movement) does not make contact. In one embodiment, the unilateral balanced occlusion represents the occlusal equilibrium state of the natural teeth in which mating has progressed.

In an embodiment, the processor 120 may determine the occlusion state as a unilateral balanced occlusion when several teeth are in contact with one posterior part at the same time based on the right and left movements of the mandible (or maxilla). For example, if the artificial tooth to be restored (eg, prosthesis) corresponds to the posterior part, analyze the situation in which the teeth touch each other in the process of moving the mandible left and right to determine the occlusal state when teeth 4, 5, and 6 touch each other. It can be determined as a unilateral balanced occlusion.

Referring to FIG. 11 , bilateral balanced occlusion represents an occlusal form in which the cusps on the posterior balance side contact together when the cusps on the working side of the posterior are in contact. It can respond to the occlusal shape making contact on both working sides. In an embodiment, the bilateral balanced occlusion may represent an artificial occlusion type provided to a full denture patient. In one embodiment, the working side indicates a direction of movement (eg, a side moving during lateral movement), and the balance side indicates a direction symmetrical with respect to a central point or central plane of the oral cavity.

In an embodiment, the processor 120 may determine the occlusion state as a bilateral balanced occlusion when several teeth are in contact with both posterior teeth at the same time based on the right and left movements of the mandible (or maxilla). For example, if the artificial tooth to be restored (eg, prosthesis) corresponds to the posterior part, the situation in which the teeth touch each other in the process of moving the mandible left and right is analyzed and teeth 4, 5, and 6 touch each other on both sides, 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, for example, during central occlusal state and dynamic occlusal movement according to the determined occlusal shape. The modeling data of the artificial teeth may be generated and updated so that the occlusal area with the opposing teeth, the contact with the adjacent teeth, the contact area, the contact strength, etc. are within a set range corresponding to the corresponding occlusal shape for each tooth.

In an embodiment, when the occlusion shape is determined to be a mutual protection occlusion, the processor 120 may generate modeling data of the artificial teeth so that a contact point is not generated in the posterior part during the forward movement and the lateral movement. For example, if the artificial tooth to be restored (e.g., prosthesis) is the posterior part and is determined by mutual protection occlusion, 3D modeling data including the size, shape, and position of the artificial tooth corresponding to the posterior part is generated using the default library. Afterwards, the size, shape, and position of artificial teeth (eg, prostheses) can be updated so that no contact points are formed in the posterior region 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 the posterior teeth (or tooth number) and the mutual protection occlusion.

In an embodiment, when the occlusal form is determined to be a unilateral balanced occlusion, the processor 120 generates occlusal points having the same strength as the teeth adjacent to the posterior teeth during forward and lateral movements by a preset level or higher. can create For example, if the artificial tooth to be restored (eg, prosthesis) is a posterior part and is determined as a unilateral balanced occlusion, modeling data including the size, shape, and position of the artificial tooth corresponding to the posterior part is generated using the default library. , the size, shape, and position of artificial teeth (eg, prostheses) can be updated so that occlusal points with the same strength as the preset number of peripheral teeth adjacent to the posterior teeth are formed when the mandible is moved forward and left and right. As 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 the posterior teeth (or tooth number) and unilateral balanced occlusion.

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

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

Referring to FIG. 12( a ), when the occlusal form is a mutual protection occlusion, the processor 120 determines whether there is an interference region that interferes with the movement of the teeth by more than a preset level during the forward movement, left movement, and right movement of the object. can be decided For example, when modeling data of a virtual tooth (eg, a prosthesis) according to the mutual protection occlusion is generated, the processor 120 may generate a virtual dynamic occlusion using modeling data of the virtual tooth (eg, a prosthesis) and dynamic occlusion data. The movement can be simulated, and the virtual movement path according to the left and right movement and forward movement of one or more cusps and concave included in each tooth is analyzed according to the simulation result, and the adjacent teeth are adjacent within a preset distance on the virtual movement path, or have a preset length When abnormal overlap or movement of more than a preset level is obstructed, the corresponding region may be determined as an interference region having interference by an adjacent value.

Referring to FIG. 12(b) , the processor 120 performs forward movement, right movement, and left movement when the occlusal form is a mutual protection occlusion and the interference region exists more than a preset first number (eg, one). The modeling data may be updated by deleting a preset first thickness (eg, 30 μm) or more from the thickness of the interference region of . Accordingly, updated modeling data may be acquired so that a contact point with an adjacent tooth is not formed on the virtual tooth during the virtual dynamic occlusal movement.

In an embodiment, the processor 120 may maintain the shape of the virtual teeth appearing in the modeling data when the occlusion form is a mutual protection occlusion and the interference area is less than a preset first number (eg, one). have.

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

Referring to FIG. 13 , when the occlusal form is a unilateral balanced occlusion and there is a second preset number (eg, one) or more of the interference region, the processor 120 determines adjacent values to the interference region during right and left movements. 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 strength to the preset level or more. Accordingly, it is possible to acquire the updated modeling data so as to be in contact with the adjacent teeth on the virtual teeth with the same or similar strength during the virtual dynamic occlusal movement.

In an embodiment, when the occlusal form is a unilateral balanced occlusion and the interference region exists less than a preset second number (eg, one), the posterior buccal side under the left motion boundary condition or the right motion boundary condition. The length of the buccal cusp in the posterior region may be extended to more than a preset length so that the cusp comes into contact with the antagonist.

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

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

In an embodiment, the processor 120 may determine one or more recommended occlusal shapes based on occlusal shape suitability indicating a degree to which the analysis result of the movement path corresponds to each occlusal shape. For example, the degree of fit of the occlusal shape is determined by analyzing the status of whether the object is in contact with the antagonist (or adjacent teeth), the contact area for each area, the contact strength, and the movement path in the process of determining the occlusal shape of the object according to step S250. It can be determined through the process of quantifying the degree of correspondence with each shape.

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

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

In an embodiment, when the processor 120 displays modeling data of a virtual tooth (eg, a prosthesis), one or more occlusal points may be superimposed on the modeling data and displayed, 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 occlusion state can be visually displayed on the surface of the prosthesis shape.

In an embodiment, when a user's selection input for a recommended occlusion shape is received, the processor 120 may generate a second occlusion type according to the current occlusion shape (eg, occlusal shape 1) on modeling data of a virtual tooth (eg, prosthesis). The first occlusal point 1510 and the second occlusal point 1520 when the recommended occlusal type (eg, occlusal type 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 with different colors or display methods.

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

In an embodiment, the processor 120 may determine a recommendation score for the occlusion shape before and after the update and display it together with the updated modeling data. In one embodiment, by applying dynamic occlusal data to the modeling data before the update and the modeling data before the update, respectively, virtual simulations for the forward movement, the right movement, and the left movement are performed to determine the number of detected interference regions and the removal of the interference regions. Recommendation scores for the occlusal shape before and after the update can be calculated, respectively, based on the reduction area required for occlusion and the degree of fit of the occlusal shape. The higher the occlusal shape fit, the higher the recommendation score can be calculated.

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

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

18 is a flowchart illustrating a method in which the device 100 provides modeling data of artificial teeth to an object according to an exemplary embodiment.

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

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

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

In an embodiment, the device 100 outputs a message inquiring whether to update the occlusal shape, updates the occlusal shape in response to the message, and updates and provides modeling data based on the updated occlusal 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 occlusal shape by analyzing the patient's dynamic occlusal movement, and the occlusal shape applied to the modeling data and the corresponding occlusal point may be displayed 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 expressed in three dimensions based on 3D modeling data, and accordingly, the shape of the artificial tooth at individual positions Determination and correction of values for various items such as , size, and location may be made. In addition, throughout the specification, the expression “providing” information may include displaying or transmitting and receiving the corresponding information. Also, some of the above-described operations may be implemented in variously modified forms in terms of order, function, and branching.

Meanwhile, 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 the data used in the above-described method may be recorded in a computer-readable recording medium through various means. The computer-readable recording medium includes a storage medium such as a magnetic storage medium (eg, ROM, RAM, USB, floppy disk, hard disk, etc.) and an optically readable medium (eg, CD-ROM, DVD, etc.). do.

A person of ordinary skill in the art related to this embodiment will 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 restrictive sense. The scope of the present disclosure is indicated by the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present disclosure.

100: device
110: receiver
120: processor

Claims (19)

In the method of providing modeling data of artificial teeth for an object,
acquiring static occlusion data indicating positions of a plurality of teeth included in the object and dynamic occlusion data indicating movement of the object when the object is in a static occlusion state;
determining movement paths for the plurality of teeth by using the static occlusion data and the dynamic occlusion data;
determining an occlusal shape of the object based on the movement path; and
Including; providing the modeling data determined based on the occlusion shape.
The method of claim 1,
outputting a message inquiring whether 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 shape.
The method of claim 1,
The step of determining a movement path for the plurality of teeth by using the static occlusion data and the dynamic occlusion data includes:
determining a plurality of points used to determine a movement path for the plurality of teeth based on the static occlusion data; and
Determining a movement path of the plurality of teeth by analyzing a forward movement, a right movement, and a left movement of the object appearing in the dynamic occlusion data based on the plurality of points.
4. The method of claim 3,
The plurality of points includes at least one of a first point corresponding to the distal buccal end of the anterior part, a second point corresponding to the distal buccal end of the right posterior part, and a third point corresponding to the distal buccal end of the left posterior part. .
5. The method of claim 4,
The step of determining a movement path for the plurality of teeth by using the static occlusion data and the dynamic occlusion data includes:
Determining a movement path of the plurality of teeth based on the forward movement that satisfies the forward movement boundary condition; further comprising,
The forward motion boundary condition includes a condition in which a distance between the first point and the opposing incisal edge is less than or equal to a preset value.
5. The method of claim 4,
The step of determining a movement path for the plurality of teeth by using the static occlusion data and the dynamic occlusion data includes:
Determining the movement path of the plurality of teeth based on the right movement that satisfies the right movement boundary condition; further comprising,
The method of claim 1, wherein the right movement boundary condition includes a condition in which a distance between the second point and the buccal cusp of the antagonist is equal to or less than a preset value.
5. The method of claim 4,
The step of determining a movement path for the plurality of teeth by using the static occlusion data and the dynamic occlusion data includes:
Determining the movement path of the plurality of teeth based on the left movement that satisfies the left movement boundary condition; further comprising,
The left motion boundary condition includes a condition in which a distance between the third point and the buccal cusp of the antagonist is equal to or less than a preset value.
The method of claim 1,
The occlusion form is
Mutual protection occlusion indicating an occlusal shape in which molars are separated by vertical and horizontal relationships of canines during forward and lateral movements of an object shown in the dynamic occlusion data, a plurality of occlusal forces dispersing the occlusal force during the forward and lateral movements A method comprising at least one of a unilateral balanced occlusion indicating an occlusal form in which the teeth are in simultaneous contact and a bilateral balanced occlusion indicating an occlusal form in which the cusps on the posterior working side come into contact with the cusps on the posterior working side.
9. The method of claim 8,
The step of providing the modeling data determined based on the occlusal shape
When the occlusion shape is determined to be the mutual protection occlusion, acquiring the modeling data so that a contact point is not generated in the posterior region during the forward movement and the lateral movement.
10. The method of claim 9,
The step of providing the modeling data determined based on the occlusal shape
When the occlusion form is the mutual protection occlusion,
determining whether there is an interference region that interferes with the movement of the teeth by more than a preset level during the forward movement and the lateral movement; and
If the number of interference regions is greater than or equal to a preset first number, updating the modeling data by deleting more than a preset first thickness from the thickness of the interference region during the forward movement and the lateral movement; .
9. The method of claim 8,
The step of providing the modeling data determined based on the occlusal shape
When the occlusal shape is determined to be the unilateral balanced occlusion, acquiring the modeling data so that occlusal points having the same strength as the teeth adjacent to the posterior teeth are generated at a predetermined level or more during the forward movement and the lateral movement. Way.
12. The method of claim 11,
The step of providing the modeling data determined based on the occlusal shape
When the occlusal form is the unilateral balanced occlusion,
determining whether there is an interference region that interferes with the movement of the teeth by more than a preset level during the forward movement and the lateral movement; and
If the number of interference regions is equal to or greater than the second preset number, a preset value is set in the thickness of the interference region during lateral movement so that a contact point is formed in the interference region during the lateral movement with the same or similar strength as the adjacent tooth and at a preset level or more. The method further comprising; updating the modeling data by deleting the second thickness or more.
3. The method of claim 2,
The step of outputting a message asking whether to update the occlusal shape is
determining one or more recommended occlusal shapes based on occlusal shape suitability indicating a degree to which the analysis result of the movement path corresponds to each occlusal shape; and
and outputting an occlusion type list including information on the occlusion type and one or more recommended occlusion types together with the message.
In the device for providing modeling data of artificial teeth for an object,
a receiving unit configured to obtain static occlusion data indicating positions of a plurality of teeth included in the object and dynamic occlusion data indicating movement of the object when the object is in a static occlusion state; and
The movement path for the plurality of teeth is determined using the static occlusion data and the dynamic occlusion data, the occlusal shape of the object is determined based on the movement path, and the modeling data determined based on the occlusal shape A device comprising a processor to provide.
15. The method of claim 14,
the processor
Outputs a message asking whether to update the occlusal shape,
updating the occlusal shape according to a response to the message;
A device for updating and providing the modeling data based on the updated occlusal shape.
15. The method of claim 14,
the processor
Determine a plurality of points used to determine 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 a forward movement, a right movement, and a 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 includes at least one of a first point corresponding to the distal buccal end of the anterior part, a second point corresponding to the distal buccal end of the right posterior part, and a third point corresponding to the distal buccal end of the left posterior part. .
15. The method of claim 14,
The occlusion form is
Mutual protection occlusion indicating an occlusal shape in which molars are separated by vertical and horizontal relationships of canines during forward and lateral movements of an object shown in the dynamic occlusion data, a plurality of occlusal forces dispersing the occlusal force during the forward and lateral movements A device comprising at least one of a unilateral balanced occlusion indicating an occlusal form in which the teeth are in simultaneous contact and a bilateral balanced occlusion indicating an occlusal form in which the cusps on the posterior balance side come into contact with the cusps on the posterior working side.
A computer-readable recording medium recording a program for executing the method of any one of claims 1 to 13 on a computer.

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