A tooth arrangement method capable of accurately positioning jaw plane

Abstract

The present invention discloses a method for arranging teeth that can accurately locate the jaw plane, comprising the following steps: S1, obtaining a virtual head model on a computer by three-dimensionally scanning the head and upper and lower jaw structure information of a patient before treatment; S2, making a virtual spherical surface with the glabella of the virtual head model as the center point and the line between the glabella and the vertex of the mandible as the radius; S3, the bottom of the virtual spherical surface corresponds to the left and right sides below the maxillary alveolar, which is the Spee curve, and the top side of the Spee curve coincides with the virtual spherical surface; S4, adding a virtual positioning plate to the position between the Spee curves on the left and right sides of the oral cavity of the virtual head model, so that the virtual positioning plate is located at the jaw plane, and the accurate positioning of the jaw plane is achieved; S5, the occlusal point on the virtual positioning plate is accurately positioned, and the virtual maxillary teeth are orderly arranged at the maxillary alveolar of the virtual head model with reference to the occlusal point. The present invention achieves accurate positioning of the jaw plane, and the tooth arrangement effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of teeth arrangement, and in particular to a teeth arrangement method capable of accurately positioning a jaw plane. Background Art

[0002] The current method of tooth arrangement is that technicians manually arrange teeth on a physical upper and lower jaw model that simulates the patient's intraoral occlusion state based on their own tooth arrangement experience. However, due to the differences in the upper and lower jaws of each patient, and the lack of any reference standards when arranging teeth, the jaw plane cannot be accurately positioned, so the neatness and accuracy of the teeth arrangement cannot be effectively guaranteed, resulting in a mediocre tooth arrangement effect, which is not highly ergonomic and cannot guarantee the patient's comfort. Summary of the invention

[0003] The present invention aims to provide a teeth arrangement method capable of accurately positioning the jaw plane, so as to solve the above-mentioned technical problems.

[0004] To achieve the above object, the technical solution of the present invention is: a method for arranging teeth that can accurately locate the jaw plane, comprising the following steps:

[0005] S1. A virtual head model is obtained on a computer by three-dimensionally scanning the patient's head and upper and lower jaw structure information before treatment;

[0006] S2, making a virtual sphere with the glabella of the virtual head model as the center point and the line between the glabella and the vertex of the mandible as the radius;

[0007] S3, the bottom of the virtual sphere corresponds to the left and right sides of the lower part of the maxillary alveolar, which is the Spee curve, and the top part of the Spee curve coincides with the virtual sphere;

[0008] S4. Design a virtual positioning plate with a bite point, and add the virtual positioning plate to the position between the Spee curves on the left and right sides of the oral cavity of the virtual head model, so that the virtual positioning plate is located at the jaw plane to achieve accurate positioning of the jaw plane;

[0009] S5. Accurately position the virtual maxillary teeth by using the occlusal points on the virtual positioning plate, and arrange the virtual maxillary teeth in the maxillary alveolar area of ​​the virtual head model in an orderly manner with reference to the occlusal points.

[0010] S6. Arrange the virtual dental arch of mandibular teeth in correspondence with the virtual dental arch of maxillary teeth.

[0011] Preferably, the method further comprises the following steps:

[0012] S7, according to step S1, a physical head model including the patient's head and upper and lower jaw structure information before treatment is produced, and according to step S4, a physical positioning plate with bite points is produced;

[0013] S8, opening the upper and lower jaws of the physical head model by means of a dental frame, and placing the physical positioning plate into the oral cavity of the physical head model with reference to step S4, so as to achieve accurate positioning of the jaw plane;

[0014] S9. Accurately position the physical maxillary teeth by the occlusal points on the physical positioning plate, and arrange the physical maxillary teeth in the maxillary alveolar area of ​​the physical head model in an orderly manner according to the occlusal points;

[0015] S10. Arrange the dental arch of the mandibular teeth in correspondence with the dental arch of the maxillary teeth of the entity.

[0016] Preferably, the arrangement shape and size of the occlusal points on the virtual positioning plate and the physical positioning plate correspond to the shape and size of the patient's maxillary dental arch.

[0017] Preferably, the virtual positioning plate and / or the physical positioning plate is in an isosceles trapezoidal shape.

[0018] Preferably, each occlusal point includes two rectangular blocks, and the two rectangular blocks corresponding to the occlusal points at the front teeth are arranged front to back, and the two rectangular blocks corresponding to the occlusal points at the side teeth are arranged diagonally.

[0019] Preferably, an XY axis coordinate system is established on the virtual positioning plate and / or the physical positioning plate with the center point of the front teeth as the origin, and values ​​are set on the X axis and the Y axis. The value on the X axis represents the width of the tooth placement, and the value on the Y axis represents the in and out degree of the tooth placement.

[0020] The present invention has the following beneficial effects:

[0021] (1) A virtual head model is constructed on a computer, and a virtual sphere is made on the virtual head model. The bottom of the virtual sphere corresponds to the left and right sides of the lower part of the maxillary alveolar, which are the Spee curves. The top side of the Spee curve coincides with the virtual sphere. A virtual positioning plate is then added to the position between the left and right Spee curves in the oral cavity of the virtual head model, so that the virtual positioning plate is located at the jaw plane, and the jaw plane is accurately positioned, so that the virtual maxillary teeth and mandibular teeth are accurately and effectively arranged at the maxillary alveolar and mandibular alveolar of the virtual head model. The physical positioning plate is finally placed in the oral cavity of the physical head model with reference to the virtual head model to realize the precise positioning of the jaw plane, so as to realize the precise and effective arrangement of the physical maxillary teeth and mandibular teeth in the maxillary alveolar and mandibular alveolar of the physical head model. Multi-level precise positioning is realized through the Spee curve, jaw plane, and the occlusal points on the virtual positioning plate or the physical positioning plate, forming a reference standard for tooth arrangement. Therefore, it can effectively ensure the neatness and accuracy of tooth arrangement, thereby making the tooth arrangement effect better, being highly ergonomic and ensuring the comfort of patients.

[0022] (2) By establishing an XY axis coordinate system with the center point of the front teeth as the origin on the virtual positioning plate and / or the physical positioning plate, setting values ​​on the X axis and the Y axis, the value on the X axis represents the width of the tooth placement, and the value on the Y axis represents the in-and-out degree of the tooth placement, thereby improving the placement accuracy of each tooth and further improving the tooth arrangement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of constructing a virtual head model and a virtual spherical surface according to an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of constructing a virtual sphere, mandible and spee curve according to an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the coordination of the virtual head model, the virtual spherical surface and the virtual positioning plate according to an embodiment of the present invention.

[0026] Figure 4 is a front view of a solid positioning plate of an embodiment of the present invention placed in a solid head model.

[0027] Figure 5 is a side view of a solid positioning plate of an embodiment of the present invention placed in a solid head model.

[0028] Figure 6 Schematic diagram of a physical positioning plate according to an embodiment of the present invention.

[0029] Figures are labeled: 1. virtual head model, 2. virtual sphere, 3. glabella, 4. mandible, 41. apex of mandible, 5. Spee curve, 6. virtual positioning plate, 7. occlusal point, 8. physical head model, 9. physical positioning plate, 10 dental frame. DETAILED DESCRIPTION

[0030] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0031] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] See also Figure 1-4 As shown, as an embodiment of the present invention, a method for arranging teeth that can accurately locate the jaw plane is provided, comprising the following steps:

[0034] S1, obtaining a virtual head model 1 on a computer by three-dimensionally scanning the patient's head and upper and lower jaw structure information before treatment;

[0035] S2, taking the glabella point 3 of the virtual head model 1 as the center point and the line between the glabella point 3 and the vertex 41 of the mandible 4 as the radius, a virtual spherical surface 2 is made;

[0036] S3, the bottom of the virtual sphere 2 corresponds to the left and right sides below the maxillary alveolar surface, which is the Spee curve 5, and the top side of the Spee curve 5 coincides with the virtual sphere 2;

[0037] S4, designing a virtual positioning plate 6 with a bite point 7, and adding the virtual positioning plate 6 to the position between the Spee curves 5 on the left and right sides of the oral cavity of the virtual head model 1, so that the virtual positioning plate 6 is located at the jaw plane, thereby realizing accurate positioning of the jaw plane;

[0038] S5. Accurately position the virtual maxillary teeth by using the occlusal points 7 on the virtual positioning plate 6, and arrange the virtual maxillary teeth in the maxillary alveolar region of the virtual head model 1 in an orderly manner with reference to the occlusal points 7.

[0039] S6. Arrange the virtual dental arch of mandibular teeth in correspondence with the virtual dental arch of maxillary teeth.

[0040] Specifically, the following steps are also included:

[0041] S7, according to step S1, a physical head model 8 including the patient's head and upper and lower jaw structure information before treatment is produced, and according to step S4, a physical positioning plate 9 with a bite point 7 is produced,

[0042] S8, opening the upper and lower jaws of the physical head model 8 by means of the dental frame 10, and placing the physical positioning plate 9 into the oral cavity of the physical head model 8 with reference to step S4, so as to achieve accurate positioning of the jaw plane;

[0043] S9. Accurately position the physical maxillary teeth by using the bite points 7 on the physical positioning plate 9, and arrange the physical maxillary teeth in the maxillary alveolar position of the physical head model 8 in an orderly manner with reference to the bite points 7.

[0044] S10. Arrange the dental arch of the mandibular teeth in correspondence with the dental arch of the maxillary teeth of the entity.

[0045] The tooth arrangement method capable of accurately positioning the jaw plane of the present invention constructs a virtual head model 1 on a computer, and makes a virtual spherical surface 2 on the virtual head model 1. According to ergonomics, the spherical surface where the cusp inclination, the condylar inclination, the incisal inclination, and the Spee curve 5 are located are all concentric circles with the virtual spherical surface 2, and the left and right sides of the bottom of the virtual spherical surface 2 corresponding to the lower side of the maxillary alveolar are the Spee curve 5, and the top side of the Spee curve 5 coincides with the virtual spherical surface 2. Then, a virtual positioning plate 6 is added to the position between the Spee curves 5 on the left and right sides of the oral cavity of the virtual head model 1, so that the virtual positioning plate 6 is located at the jaw plane, and the jaw plane is accurately positioned, thereby achieving The virtual maxillary teeth and mandibular teeth are accurately and effectively arranged at the maxillary alveolar and mandibular alveolar of the virtual head model 1. Finally, the physical positioning plate 9 is placed in the oral cavity of the physical head model 8 with reference to step S4 to achieve accurate positioning of the jaw plane, thereby achieving accurate and effective arrangement of the physical maxillary teeth and mandibular teeth at the maxillary alveolar and mandibular alveolar of the physical head model 8. Multi-level precise positioning is achieved through the Spee curve 5, the jaw plane, the virtual positioning plate 6 or the occlusal point 7 on the physical positioning plate 9, forming a reference standard for tooth arrangement. Therefore, the neatness and accuracy of tooth arrangement can be effectively guaranteed, thereby making the tooth arrangement effect better, being highly ergonomic and ensuring the comfort of patients.

[0046] In this embodiment, the arrangement shape and size of the bite points 7 on the virtual positioning plate 6 and the physical positioning plate 9 correspond to the shape and size of the patient's maxillary dental arch, so that corresponding adaptation is performed according to the specific patient situation, further improving the tooth arrangement accuracy.

[0047] In this embodiment, the virtual positioning plate 6 and the physical positioning plate 9 are isosceles trapezoids, and each bite point 7 includes two rectangular blocks. The two rectangular blocks corresponding to the bite point 7 at the front teeth are arranged front to back, and the two rectangular blocks corresponding to the bite point 7 at the side teeth are arranged diagonally, which is more in line with the shape of the human dental arch, thereby improving the accuracy of tooth arrangement.

[0048] In this embodiment, an XY axis coordinate system is established on the virtual positioning plate 6 and the physical positioning plate 9 with the center point of the front teeth as the origin, and values ​​are set on the X axis and the Y axis. The value on the X axis represents the width of the tooth placement, and the value on the Y axis represents the in and out degree of the tooth placement, thereby improving the placement accuracy of each tooth and further improving the tooth arrangement accuracy.

[0049] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims will fall within the scope of protection of the present invention.

Claims

1. A method for arranging teeth that can accurately locate the jaw plane, characterized in that: The following steps are involved: S1. A virtual head model is obtained on a computer by three-dimensionally scanning the patient's head and upper and lower jaw structure information before treatment; S2, making a virtual sphere with the glabella of the virtual head model as the center point and the line between the glabella and the vertex of the mandible as the radius; S3, the bottom of the virtual sphere corresponds to the left and right sides of the lower part of the maxillary alveolar, which is the Spee curve, and the top part of the Spee curve coincides with the virtual sphere; S4. Design a virtual positioning plate with a bite point, and add the virtual positioning plate to the position between the Spee curves on the left and right sides of the oral cavity of the virtual head model, so that the virtual positioning plate is located at the jaw plane to achieve accurate positioning of the jaw plane; S5. Accurately position the virtual maxillary teeth by using the occlusal points on the virtual positioning plate, and arrange the virtual maxillary teeth in the maxillary alveolar area of ​​the virtual head model in an orderly manner with reference to the occlusal points. S6. Arrange the virtual dental arch of mandibular teeth in correspondence with the virtual dental arch of maxillary teeth.

2. The method for arranging teeth with accurate positioning of the jaw plane according to claim 1, characterized in that: The following steps are also included: S7, according to step S1, a physical head model including the patient's head and upper and lower jaw structure information before treatment is produced, and according to step S4, a physical positioning plate with bite points is produced; S8, opening the upper and lower jaws of the physical head model by means of a dental frame, and placing the physical positioning plate into the oral cavity of the physical head model with reference to step S4, so as to achieve accurate positioning of the jaw plane; S9. Accurately position the physical maxillary teeth by the occlusal points on the physical positioning plate, and arrange the physical maxillary teeth in the maxillary alveolar area of ​​the physical head model in an orderly manner according to the occlusal points; S10. Arrange the dental arch of the mandibular teeth in correspondence with the dental arch of the maxillary teeth of the entity.

3. The method for arranging teeth with accurate positioning of the jaw plane according to claim 2, characterized in that: The arrangement shape and size of the occlusal points on the virtual positioning plate and the physical positioning plate correspond to the shape and size of the patient's maxillary dental arch.

4. The method for arranging teeth with accurate positioning of the jaw plane according to claim 2, characterized in that: The virtual positioning plate and / or the physical positioning plate is in an isosceles trapezoidal shape.

5. The method for arranging teeth with accurate positioning of the jaw plane according to claim 1, characterized in that: Each occlusal point includes two rectangular blocks, and the two rectangular blocks corresponding to the occlusal point at the front teeth are arranged front to back, and the two rectangular blocks corresponding to the occlusal point at the side teeth are arranged diagonally.

6. The method for arranging teeth with accurate positioning of the jaw plane according to claim 2, characterized in that: An XY axis coordinate system is established on the virtual positioning plate and / or the physical positioning plate with the center point of the front teeth as the origin, and values ​​are set on the X axis and Y axis. The value on the X axis represents the width of the tooth placement, and the value on the Y axis represents the in-and-out degree of the tooth placement.

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