Dental occlusion treatment indicating guide plate and manufacturing method thereof

Abstract

The invention relates to a dental occlusion treatment indicating guide plate and a manufacturing method thereof. The manufacturing method comprises the following steps: establishing a patient dentition and static occlusion relation model, and establishing a dynamic occlusion relation model for simulating opening and closing movement of a patient; performing experimental pre-occlusion adjustment on the dynamic occlusion relation model of the patient until the upper and lower dentitions realize a multi-point occlusion contact relation according with a treatment target, and obtaining data needing to be ground for occlusion adjustment; the occlusion treatment guide plate is designed and prepared by using original dentition form data or experimental pre-occlusion adjusted dentition form data and occlusion adjustment grinding data. By digitally simulating the experimental pre-occlusion adjustment process or result and by means of the guidance of the occlusion treatment indication guide plate, the intraoral grinding area is accurately positioned, and the grinding adjustment amount is controlled, so that the intraoral operation time of clinical occlusion treatment can be greatly saved, and the accuracy and efficiency of occlusion adjustment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of oral auxiliary medical devices, and in particular to a dental occlusal treatment indication guide plate and a manufacturing method thereof. Background Art

[0002] Occlusal therapy is an important clinical treatment method for difficult occlusal problems in dentistry. For patients with secondary jaw position changes or malocclusion, occlusal therapy that adjusts the occlusal surface morphology can be used to reconstruct the occlusal contact relationship between the upper and lower teeth, thereby improving oral function. At present, occlusal therapy generally requires the establishment of a dynamic plaster model in vitro to simulate the patient's opening and closing mouth movement. Experimental pre-occlusal adjustments are performed on the plaster model to evaluate whether the occlusal treatment effect meets the treatment goal, and then intraoral operations are started. However, the intraoral occlusal adjustment process is time-consuming and labor-intensive, and lacks precise guidance. It is difficult to accurately reproduce the results of the experimental pre-occlusal adjustment on the model, which affects the effect of occlusal treatment. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the present invention is to provide a dental occlusal treatment indication guide and a method for making the same. By obtaining the morphological data of the dentition before and after the experimental pre-occlusal adjustment, the occlusal treatment results can be predicted and the plan can be designed more intuitively, and an occlusal treatment indication guide can be further manufactured to provide precise guidance for intraoral occlusal adjustment operations, which can significantly improve the efficiency and effectiveness of occlusal treatment.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] A method for manufacturing a dental occlusal treatment indication guide plate of the present invention comprises the following steps:

[0006] 1) Obtain the relationship between the patient's upper and lower jaw dentition morphology and the central occlusal position, and establish the patient's dentition and static occlusal relationship model;

[0007] 2) Obtain the spatial position relationship between the patient's maxillary dentition and the hinge axis of the mandibular mouth opening and closing movement, and establish a dynamic occlusal relationship model that simulates the patient's mouth opening and closing movement;

[0008] 3) Experimental pre-occlusal adjustment is performed on the original dentition morphology based on the patient's dynamic occlusal relationship model, and the upper and lower dentitions are repositioned to the new occlusal contact position along the closed mouth path, and experimental pre-occlusal adjustment is performed again, and repeated until the upper and lower dentitions achieve a multi-point occlusal contact relationship that meets the treatment goal, and the dentition morphology after experimental pre-occlusal adjustment is obtained;

[0009] 4) Load the original dentition morphology data, and register it with the dentition morphology data after experimental pre-occlusal treatment using the common area to obtain the difference area data between the two, that is, obtain the occlusal adjustment grinding area data, which includes the location and grinding amount data of the area that needs occlusal treatment grinding;

[0010] 5) Design an occlusal treatment indication guide, and generate the occlusal treatment guide body using the original dentition morphology data or the dentition morphology data after experimental pre-occlusal adjustment, without covering the occlusal adjustment grinding area; generate a number of cylindrical rings that are equidistant from the occlusal treatment guide body based on the morphology data of the occlusal treatment grinding area after adjustment.

[0011] Wherein, in step 1), the upper and lower dentition morphology data and the central occlusal position relationship data are obtained by an intraoral scanner;

[0012] Among them, in step 2), the combined data of the maxillary dentition and the pre-positioned bite plate are obtained by an intraoral scanner, and the position data of the pre-positioned bite plate installed on the maxillary dentition and the mandibular opening and closing movement data are obtained by using the mandibular movement trajectory recording system, and the position relationship data of the mandibular opening and closing movement hinge axis relative to the pre-positioned bite plate can be obtained by calculation;

[0013] A dynamic occlusal relationship digital model simulating the patient's opening and closing mouth movement was established based on a virtual articulator using the combined data of the maxillary dentition and the pre-positioned bite plate, the position relationship data of the mandibular opening and closing mouth movement hinge axis relative to the pre-positioned bite plate, and the centric occlusal position relationship data.

[0014] Among them, the experimental pre-occlusal adjustment in step 3) is carried out by virtually grinding the corresponding occlusal contact points of the original dentition morphology data. According to the treatment plan, the upper jaw, the lower jaw, or the upper and lower jaws can be adjusted simultaneously, and the upper and lower teeth are repositioned to the new occlusal contact position along the closed mouth path. The process is repeated until the upper and lower teeth achieve a multi-point occlusal contact relationship that meets the treatment goals, and the dentition morphology data after the experimental pre-occlusal adjustment is obtained.

[0015] Among them, in step 5), the cylindrical collar includes a constraint guide portion and a depth indicating portion, the cylindrical collar is arranged on the upper surface of the guide plate body, the internal through hole of the cylindrical collar constitutes the constraint guide portion, which cooperates with the turning needle for positioning, and the upper surface of the cylindrical collar constitutes the depth indicating portion, which cooperates with the guide plate positioning ring of the turning needle to indicate the grinding depth of the tooth occlusal surface.

[0016] In step 5), the completed guide plate data can be 3D printed to produce a physical guide plate for clinical use in assisting occlusal treatment.

[0017] In addition, in step 1), by making upper and lower dentition impressions and centric occlusal records, upper and lower dentition plaster models are cast to obtain the patient's dentition and static occlusal relationship model;

[0018] In step 2), the positional relationship between the maxillary dentition and the empirical hinge axis is recorded by an anatomical face bow, and the maxillary dentition model is installed in a physical articulator; or the actual mandibular opening and closing mouth movement hinge axis position is determined by a mandibular motion trajectory tracing system, and the maxillary dentition model is installed in a physical articulator with reference to this position; the mandibular dentition model is then installed in a physical articulator with reference to the position of the maxillary dentition model using the centric occlusion record, thereby establishing a dynamic occlusal relationship model that simulates the patient's opening and closing mouth movement based on the physical articulator.

[0019] In step 3), the upper and lower dentition model morphological data, the central occlusal position relationship data, and the position relationship data of the upper and lower dentition and the physical articulator are obtained by a model scanner, and the dynamic occlusal relationship model established based on the physical articulator is converted into a dynamic occlusal relationship digital model established based on the virtual articulator.

[0020] Alternatively, before the experimental pre-occlusal adjustment begins, the original upper and lower dental arch morphology data can be obtained through a model scanner or an intraoral scanner for preservation. Then, on the physical articulator, the occlusal contact position of the plaster model can be determined with articulating paper. A dental handpiece mounted with a grinding wheel can be used to grind the occlusal contact points of the plaster model. According to the treatment plan, the maxilla, mandible, or both the upper and lower jaws can be adjusted. The articulator cutting guide pin can then be lowered to lower the maxillary model along the closed mouth path to establish a new occlusal contact with the mandibular model. This process can be repeated until the upper and lower dental arch models achieve a multi-point occlusal contact relationship that meets the treatment goals. Then, the dental arch morphology data after the experimental pre-occlusal adjustment can be obtained through a model scanner or an intraoral scanner.

[0021] An occlusal treatment indication guide plate prepared by the above method comprises a guide plate body, a supporting and fixing portion and a cylindrical collar. The lower part of the guide plate body is provided with a supporting and fixing portion, and the supporting and fixing portion is used to be installed on adjacent teeth. The cylindrical collar is arranged on the upper surface of the guide plate body. The internal through hole of the cylindrical collar constitutes a restraining guide portion, which cooperates with the turning needle for positioning. The upper surface of the cylindrical collar constitutes a depth indicating portion, which cooperates with the guide plate positioning ring of the turning needle to indicate the grinding depth of the tooth occlusal surface.

[0022] The advantages of the present invention are:

[0023] Through digital simulation of the experimental pre-occlusal adjustment process or results, intuitive prediction of occlusal treatment results and design of plans can be achieved, and the location information and grinding amount data of the area to be ground for occlusal adjustment can be accurately obtained. With the guidance of the occlusal treatment indicator guide, the intraoral grinding area can be accurately located and the grinding amount can be controlled, which can greatly save the intraoral operation time of clinical occlusal treatment and improve the accuracy and efficiency of occlusal adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flow chart of the present invention;

[0025] Figure 2 This is a schematic diagram of the virtual articulator pre-occlusal treatment;

[0026] Figure 3 It is a schematic diagram of the existing occlusal contact part;

[0027] Figure 4 This is a schematic diagram of the occlusal treatment guide and the needle matching model;

[0028] Figure 5 Schematic diagram of the solid occlusal treatment guide. DETAILED DESCRIPTION

[0029] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0030] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0031] Example 1

[0032] Embodiment 1 provides a method for manufacturing a dental occlusal treatment indication guide plate, comprising the following steps:

[0033] 1) Obtain the upper and lower dental morphology data and the central occlusal position relationship data through an intraoral scanner, and establish a dental and static occlusal relationship model;

[0034] 2) A pre-positioned bite plate is installed on the maxillary dentition, and the combined data of the maxillary dentition and the pre-positioned bite plate are obtained through an intraoral scanner. The position data of the pre-positioned bite plate installed on the maxillary dentition are obtained using a mandibular motion trajectory tracing system, and the movement data of the mandible relative to the pre-positioned bite plate when opening and closing the mouth are recorded. The position relationship data of the hinge axis of the mandibular opening and closing movement relative to the pre-positioned bite plate can be obtained through calculation; the original maxillary and mandibular dentition morphological data and the central occlusal position relationship data, the combined data of the maxillary dentition and the pre-positioned bite plate, and the position relationship data of the hinge axis of the mandibular opening and closing movement relative to the pre-positioned bite plate are converted into the pre-positioned bite plate. The system data is imported into the dental design software equipped with the virtual articulator function. The original maxillary dentition morphology data is registered to the pre-stored positioning occlusal plate data by using the combined data of the maxillary dentition and the pre-positioned occlusal plate. Then, the spatial position relationship between the original maxillary dentition morphology data and the mandibular opening and closing movement hinge axis is obtained by using the position relationship data of the mandibular opening and closing movement hinge axis relative to the pre-positioned occlusal plate. The initial position relationship between the original mandibular dentition morphology data and the original maxillary dentition morphology data is obtained by using the central occlusal position relationship data. Thus, a dynamic occlusal relationship digital model simulating the patient's opening and closing movement is established based on the virtual articulator (such as Figure 2 );

[0035] 3) Using the dynamic occlusal relationship digital model, the existing occlusal contact parts (such as Figure 3 ), virtual grinding is performed on the existing occlusal contact parts, and the upper jaw, lower jaw, or upper and lower jaws can be adjusted according to the treatment plan, and the upper and lower teeth are repositioned to the new occlusal contact position along the closed mouth path. The process is repeated until the upper and lower teeth achieve a multi-point occlusal contact relationship that meets the treatment goal, and the tooth morphology data after the experimental pre-occlusal adjustment is obtained;

[0036] 4) Reload the original dentition morphology data, and register it with the dentition morphology data after experimental pre-occlusal treatment using the common area to obtain the difference area data between the two, that is, to obtain the occlusal adjustment grinding area data, which includes the position and grinding amount data that require occlusal treatment grinding;

[0037] 5) Using the original dentition morphology data or the dentition morphology data after experimental pre-occlusal treatment, determine the tooth position area covered by the occlusal treatment indication guide, generate the outer boundary of the guide range, generate the inner boundary of the guide range according to the occlusal adjustment grinding area data, select the data in the inner and outer boundary areas to expand by 1-3mm, and generate the guide body; according to the position and adjustment grinding amount data of the occlusal treatment grinding, generate a cylindrical collar with a constraint guide part and a depth indication part on the guide body, the position data of the occlusal treatment grinding determines the position of the cylindrical collar on the guide body, and the adjustment grinding amount data of the occlusal treatment grinding determines the height of the depth indication part of the cylindrical collar.

[0038] See also Figure 4 The cylindrical ring is arranged on the upper surface of the guide plate body, the inner surface of the internal through hole of the cylindrical ring is a constraint guide part, which cooperates with the turning needle for positioning, and the depth indicating part on the upper surface of the cylindrical ring cooperates with the guide plate positioning ring of the turning needle to indicate the grinding depth of the tooth occlusal surface.

[0039] See also Figure 5 The completed guide plate data can be used through 3D printing to make a physical guide plate for clinical use in assisting occlusal treatment.

[0040] Example 2

[0041] Embodiment 2 provides a method for manufacturing a dental occlusal treatment indication guide plate, comprising the following steps:

[0042] 1) Take impressions of the upper and lower dentition and the centric occlusion record, and cast plaster models of the upper and lower dentition;

[0043] 2) The positional relationship between the maxillary dentition and the empirical hinge axis (close to the actual mandibular opening and closing movement hinge axis) is recorded by the anatomical face bow, and the maxillary dentition model is installed in the physical articulator, or the actual mandibular opening and closing movement hinge axis position is determined by the mandibular motion trajectory tracing system, and the maxillary dentition model is installed in the physical articulator with reference to this position; the mandibular dentition model is then installed in the physical articulator with reference to the position of the maxillary dentition model using the centric occlusal record, thereby establishing a dynamic occlusal relationship model that simulates the patient's opening and closing movement based on the physical articulator;

[0044] 3) Obtain the upper and lower dentition plaster model morphology data (i.e., original dentition morphology data), the centric occlusal position relationship data, and the position relationship data between the upper and lower dentition and the physical articulator through a model scanner, and convert the dynamic occlusal relationship model established based on the physical articulator into a dynamic occlusal relationship digital model established based on the virtual articulator; use the dynamic occlusal relationship digital model to display the existing occlusal contact parts (such as Figure 3 ), virtual grinding is performed on the existing occlusal contact parts, and the upper jaw, lower jaw, or upper and lower jaws can be adjusted according to the treatment plan, and the upper and lower teeth are repositioned to the new occlusal contact position along the closed mouth path. The process is repeated until the upper and lower teeth achieve a multi-point occlusal contact relationship that meets the treatment goal, and the tooth morphology data after the experimental pre-occlusal adjustment is obtained;

[0045] 4) reloading the original dentition morphology data, and registering it with the dentition morphology data after the experimental pre-occlusal treatment using the common area, obtaining the difference area data between the two, that is, obtaining the occlusal adjustment grinding area data, which includes the position and grinding amount data that require occlusal treatment grinding, and performing Boolean subtraction operation on the dentition data that reaches the ideal position after the experimental pre-occlusal treatment and the original dentition data, to obtain the dentition data with the occlusal treatment area removed, which includes the position and grinding amount data that require occlusal treatment grinding;

[0046] 5) Using the original dentition morphology data or the dentition morphology data after experimental pre-occlusal treatment, determine the tooth position area covered by the occlusal treatment indication guide, generate the outer boundary of the guide range, generate the inner boundary of the guide range according to the occlusal adjustment grinding area data, select the data in the inner and outer boundary areas to expand by 1-3mm, and generate the guide body; according to the position and adjustment grinding amount data of the occlusal treatment grinding, generate a cylindrical collar with a constraint guide part and a depth indication part on the guide body, the position data of the occlusal treatment grinding determines the position of the cylindrical collar on the guide body, and the adjustment grinding amount data of the occlusal treatment grinding determines the height of the depth indication part of the cylindrical collar.

[0047] Example 3

[0048] Step 3) of Example 2 can be performed by first obtaining the original upper and lower dental arch morphology data for storage through a model scanner or an intraoral scanner before the experimental pre-occlusal adjustment begins, and then determining the occlusal contact position of the plaster model on a physical articulator using articulating paper, and using a dental handpiece mounted with a grinding wheel to perform grinding on the occlusal contact points of the plaster model. According to the treatment plan, the maxillary, mandibular, or both the upper and lower jaws can be adjusted, and then the articulator cutting guide pin is lowered to lower the maxillary model along the closed mouth path to establish a new occlusal contact with the mandibular model. This process is repeated until the upper and lower dental arch models achieve a multi-point occlusal contact relationship that meets the treatment goals, and then obtaining the dental arch morphology data after the experimental pre-occlusal adjustment through a model scanner or an intraoral scanner.

[0049] The above description is only a more reasonable implementation example of the present invention. The protection scope of the present invention includes but is not limited to it. Any non-substantial changes based on the technical solution of the present invention by technicians in this field are included in the scope of the present invention.

Claims

1. A method for manufacturing a dental occlusal treatment indication guide, characterized in that: The following steps are involved: 1) Obtain the relationship between the patient's upper and lower jaw dentition morphology and the central occlusal position, and establish the patient's dentition and static occlusal relationship model; 2) Obtain the spatial position relationship between the patient's maxillary dentition and the hinge axis of the mandibular mouth opening and closing movement, and establish a dynamic occlusal relationship model that simulates the patient's mouth opening and closing movement; 3) Experimental pre-occlusal adjustment is performed on the original dentition morphology based on the patient's dynamic occlusal relationship model, and the upper and lower dentitions are repositioned to the new occlusal contact position along the closed mouth path, and experimental pre-occlusal adjustment is performed again, and repeated until the upper and lower dentitions achieve a multi-point occlusal contact relationship that meets the treatment goal, and the dentition morphology after experimental pre-occlusal adjustment is obtained; 4) The original dentition morphology data and the dentition morphology data after experimental pre-occlusal adjustment are registered using the common area to obtain the difference area data between the two, that is, the occlusal adjustment grinding area data; 5) Using the original dentition morphology data or the dentition morphology data after experimental pre-occlusal adjustment, combined with the occlusal adjustment grinding area data, design the occlusal treatment indication guide.

2. The method for making a dental occlusal treatment indication guide according to claim 1, characterized in that: In step 1), the patient's upper and lower dentition planar data and centric occlusion data are obtained through intraoral scanning, and a digital model of the patient's dentition and static occlusion relationship is established using 3D software, or the upper and lower dentition morphology of the patient is obtained by making upper and lower dentition impressions, and upper and lower dentition plaster models are cast. By making a centric occlusion record, a plaster model of the patient's static occlusion relationship is established.

3. The method for making a dental occlusal treatment indication guide according to claim 2, characterized in that: Step 2) Using the digital model of the patient's dentition and static occlusal relationship and the spatial position relationship data of the maxillary dentition and the hinge axis of the mandibular opening and closing mouth movement, a dynamic occlusal relationship digital model simulating the patient's opening and closing mouth movement is established based on the virtual articulator.

4. The method for making a dental occlusal treatment indication guide according to claim 3, characterized in that: In step 3), the experimental pre-occlusal adjustment is performed by virtually grinding the corresponding occlusal contact points of the original dentition morphology data. According to the treatment plan, the upper jaw, the lower jaw, or both the upper and lower jaws can be adjusted, and the upper and lower teeth can be repositioned to the new occlusal contact position along the closing path.

5. The method for making a dental occlusal treatment indication guide according to claim 2, characterized in that: In step 2), a dynamic occlusal relationship plaster model simulating the patient's mouth opening and closing movement is established based on a physical articulator using the patient's dentition and static occlusal relationship plaster model and the spatial position relationship between the maxillary dentition and the hinge axis of the mandibular mouth opening and closing movement.

6. The method for making a dental occlusal treatment indication guide according to claim 5, characterized in that: In step 3), the dynamic occlusal relationship model established based on the physical articulator is converted into a dynamic occlusal relationship digital model established based on the virtual articulator. The dynamic occlusal relationship digital model is then used to virtually grind the corresponding occlusal contact points of the original dentition morphology data. According to the treatment plan, the upper jaw, the lower jaw, or both the upper and lower jaws can be adjusted, and the upper and lower teeth can be repositioned along the closing path to a new occlusal contact position.

7. The method for making a dental occlusal treatment indication guide according to claim 5, characterized in that: In step 3), on the physical articulator, the occlusal contact position of the plaster model is determined with articulating paper, and the occlusal contact points of the plaster model are adjusted. According to the treatment plan, the maxillary, mandibular, or both maxillary and mandibular can be adjusted, and then the maxillary model is lowered to establish a new occlusal contact with the mandibular model. This process is repeated until the upper and lower dentition models achieve a multi-point occlusal contact relationship that meets the treatment goals, and then the dentition morphology data after the experimental pre-occlusal adjustment is obtained by scanning.

8. The method for making a dental occlusal treatment indication guide according to any one of claims 1 to 7, characterized in that: In step 5), the occlusal adjustment grinding area data includes the location and grinding amount data of the area requiring occlusal treatment grinding; the occlusal treatment guide body is generated using the original dentition morphology data or the dentition morphology data after experimental pre-occlusal adjustment, and the occlusal adjustment grinding area is not covered; based on the morphology data after grinding of the occlusal treatment grinding area, a number of cylindrical rings are generated on the occlusal treatment guide body, which are equidistant from the surface of the grinding area after occlusal treatment grinding.

9. The method for making a dental occlusal treatment indication guide according to claim 8, characterized in that: The cylindrical collar includes a constraint guide portion and a depth indicator portion. The cylindrical collar is arranged on the upper surface of the guide plate body. The constraint guide portion of the internal through hole structure of the cylindrical collar cooperates with the turning needle to achieve positioning. The depth indicator portion of the positioning plane on the cylindrical collar cooperates with the turning needle to indicate the grinding depth of the tooth occlusal surface.

10. An occlusal treatment indication guide plate prepared by the method for preparing a dental occlusal treatment indication guide plate according to any one of claims 1 to 9, characterized in that: It includes a guide plate body, a supporting and fixing part and a cylindrical collar. The lower part of the guide plate body is provided with a supporting and fixing part, and the supporting and fixing part is used to be installed on the adjacent teeth. The restraining guide part of the internal through-hole structure of the cylindrical collar cooperates with the turning needle to achieve positioning. The depth indicating part is a positioning plane on the cylindrical collar, and cooperates with the turning needle to indicate the grinding depth of the tooth occlusal surface.

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