CN111481309A - Digital adjacent surface glaze removing method - Google Patents
Digital adjacent surface glaze removing method Download PDFInfo
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- CN111481309A CN111481309A CN202010311210.8A CN202010311210A CN111481309A CN 111481309 A CN111481309 A CN 111481309A CN 202010311210 A CN202010311210 A CN 202010311210A CN 111481309 A CN111481309 A CN 111481309A
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- stripping
- guide plate
- dentition
- plate body
- tooth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
- A61C3/025—Instruments acting like a sandblast machine, e.g. for cleaning, polishing or cutting teeth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
- A61C2007/004—Automatic construction of a set of axes for a tooth or a plurality of teeth
Abstract
The invention provides a digitalized adjacent surface glaze removing method, and belongs to the technical field of medical instruments. The method comprises the steps of obtaining data, reconstructing a dentition model, discharging an orthodontic treatment target dentition after treatment, obtaining a stripping area, obtaining a personalized stripping guide plate and printing a stripping guide plate made of a resin material, fixing the stripping guide plate on a dentition of a patient, using a selected stripping tool to complete stripping operation under the guidance of a guide port, wherein the stripping guide plate comprises a guide plate body and is provided with an inwards-recessed dentition nesting cavity, two ends of the dentition nesting cavity penetrate through two ends of the guide plate body, the bottom of the dentition nesting cavity penetrates through the lower surface of the guide plate body, at least one polishing window is arranged on the upper surface of the guide plate body, and the polishing window is communicated with the dentition nesting cavity. The invention helps doctors to realize accurate clinical stripping operation, and improves the stripping accuracy and efficiency.
Description
Technical Field
The invention belongs to the technical field of orthodontic treatment, and relates to a digital adjacent surface glaze removing method.
Background
The most common clinical symptom of malocclusal deformity is crowding of the teeth, the main cause being the incoordination between the patient's tooth and bone mass. Orthodontic treatment aims to achieve coordination of tooth and bone mass in a patient's mouth, and can provide for aligning dentitions by reducing tooth mass or increasing bone mass. Currently, in clinical orthodontic treatment, in order to obtain a good aesthetic effect, non-extraction orthodontic treatment is mostly adopted on the basis of fully understanding the tooth bone structure of a patient. The non-extraction orthodontic treatment method comprises the techniques of dental arch expansion, molar distalization, adjacent surface glaze removal and the like. The adjacent surface Enamel Reduction (IER) technique is a clinical procedure for removing tooth Enamel, and the tooth is shaped by grinding the tooth Enamel on the surface of the tooth to obtain gaps between teeth, so that the correction can achieve a better expected effect.
In recent ten years, bracket-free correction technology begins to develop rapidly, a large amount of adjacent surface glaze removal work is required clinically, but the method and the precision are far behind the development of the correction technology. The traditional stripping operation has great operation randomness and poor operation stability, and stripping is usually performed by the experience of doctors.
Disclosure of Invention
The invention aims to solve the problems and provides a digital adjacent surface stripping method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a digital adjacent surface glaze removal method comprises the following steps:
1) data acquisition: directly scanning the internal position of the oral cavity of a patient by using an oral scanner to obtain dentition three-dimensional data, or scanning a plaster dental model of the patient to obtain dentition three-dimensional data, establishing digital three-dimensional dentition data,
2) reconstructing a dentition model: reconstructing the dentition three-dimensional data into a dentition three-dimensional model by using reverse reconstruction software to obtain the dentition data before orthodontic treatment of a patient,
3) the dentition data before the orthodontic treatment of a patient is firstly led into digital processing software, each tooth is divided by using the dividing function in the software, a dividing line is arranged between two teeth during the division, the teeth can not be cut, a tooth jaw model is rotated, the teeth are accurately separated by the dividing line from each angle, then virtual digital tooth arrangement is carried out, an orthodontic scheme is obtained, and the treated orthodontic treatment target dentition is discharged,
4) according to an orthodontic treatment target dentition, removing a region with adjacent teeth overlapped to obtain a form of each tooth after stripping, registering the stripped tooth with a middle tooth before stripping, keeping the position of the tooth before stripping still, registering the stripped tooth, wherein the un-stripped parts of the two teeth are matched when registering, the jaw planes of the two teeth are consistent, so as to obtain an accurate position of the stripped tooth in an oral cavity, a contour displayed in the near-far direction of the stripped tooth is an adjacent surface of stripping, measuring the vertical distance from an outer vertex of each tooth along an arch line to the adjacent surface, the measured distance is the amount of stripping required in the near-far direction of each tooth, establishing a corresponding entity according to the measured stripping amount and the adjacent surface of stripping, and the entity part is a stripping region which actually corresponds to stripping,
5) generating a whole patient dentition guide plate (5) by using a tooth surface thickening method in three-dimensional software according to the dentition data of the patient before orthodontic treatment obtained in the step 2),
6) subtracting the stripping area in the step 4) from the patient dentition guide plate, selecting a stripping tool at each stripping area (4) position according to the stripping amount, designing a guide opening for stripping operation, cutting and reserving proper teeth in place for the dentition guide plate (5) according to the number of teeth in place to obtain a personalized stripping guide plate,
7) printing the stripping guide plate of the resin material by utilizing photocuring molding S L A printing technology according to the personalized stripping guide plate,
8) in clinical use, the stripping guide plate is fixed on a patient tooth array, and the stripping operation is finished under the guidance of the guide opening by using the selected stripping tool.
In the digital adjacent surface glaze removing method, the glaze removing guide plate comprises a guide plate body, the guide plate body is provided with an inwards-concave dentition nesting cavity, two ends of the dentition nesting cavity penetrate through two ends of the guide plate body, the bottom of the dentition nesting cavity penetrates through the lower surface of the guide plate body, at least one polishing window is arranged on the upper surface of the guide plate body, and the polishing window is communicated with the dentition nesting cavity.
In the digital adjacent surface stripping method, the polishing window extends from the upper surface of the guide plate body to the side wall of the guide plate body.
In the digital adjacent surface stripping method, the grinding window extends from the upper surface of the guide plate body to the bottom of the side wall of the guide plate body.
In the digital adjacent surface stripping method, a sealing part is arranged between the end part of the grinding window and the side wall of the guide plate body.
In the digital adjacent surface glaze removing method, two side walls of the guide plate body are respectively provided with a polishing stop strip made of metal.
In the digital adjacent surface glaze removal method, the polishing stop strip is connected with the end part of the polishing window.
In the digital adjacent surface glaze removing method, the two side walls of the guide plate body and the positions corresponding to the polishing windows are respectively provided with an elastic deformable anti-loosening plate, and the bottom of the anti-loosening plate extends to the lower part of the side wall of the guide plate body.
In the digital adjacent surface glaze removing method, the two side walls of the guide plate body and the positions corresponding to the polishing windows are respectively provided with an elastic deformable anti-loosening plate, the bottom of the anti-loosening plate extends to the lower part of the side wall of the guide plate body, and the polishing stop strip is fixedly connected with the anti-loosening plate.
In the digital adjacent surface glaze removing method, the two anti-loosening plates are positioned at two sides of the guide plate body, and the bottoms of the two anti-loosening plates are close to each other.
Compared with the prior art, the invention has the advantages that:
the traditional stripping operation has great operation randomness and poor operation stability, and stripping is usually performed by the experience of doctors. In order to achieve the expected orthodontic correction effect, the stripping position and the stripping amount need to be accurately controlled. Therefore, the current situation is greatly solved by adopting a digital technology to plan a pre-glaze-removing preoperative surgical scheme and manufacture a glaze-removing guide template in the operation, a guide port for glaze-removing operation is designed on the guide plate, a doctor is helped to realize accurate clinical glaze-removing operation, the repeated measurement of glaze removal by the doctor during glaze removal is avoided, the glaze-removing accuracy and efficiency are improved, a secondary glaze-removing step is eliminated, the correction time of an adjacent glaze-removing link in orthodontic correction is saved, and meanwhile, the pursuit of the aesthetic feeling of orthodontics is also guaranteed.
Through the application of a digitization technology, the whole process digitization from the formulation of a stripping scheme to the design and manufacture of a stripping guide plate is realized, and a new means is provided for the accurate adjacent surface stripping in clinic.
Drawings
FIG. 1 is a schematic representation of three-dimensional dentition data.
FIG. 2 is a schematic representation of dentition data prior to orthodontic treatment of a patient;
FIG. 3 is a schematic view of an orthodontic treatment target dentition;
FIG. 4 is a schematic view of a stripping area on an orthodontic treatment target dentition;
FIG. 5 is a schematic view of a patient dentition guide;
FIG. 6 is a schematic structural view of a stripping guide plate;
FIG. 7 is a schematic cross-sectional view of a stripping guide;
fig. 8 is a working principle diagram of the present invention.
In the figure, three-dimensional dentition data 1, dentition data 2 before orthodontic treatment of a patient, an orthodontic treatment target dentition 3, a stripping area 4, a patient dentition guide plate 5, a guide plate body 6, an anti-loosening plate 10, a polishing stop strip 11, a dentition nesting cavity 12, a sealing part 15 and a polishing window 61.
Detailed Description
A digital adjacent surface glaze removal method comprises the following steps:
1) data acquisition: directly scanning the internal position of the oral cavity of a patient by using an oral scanner to obtain dentition three-dimensional data or scanning a plaster dental model of the patient to obtain dentition three-dimensional data, establishing digital three-dimensional dentition data 1, wherein the three-dimensional dentition data 1 is shown in figure 1,
2) reconstructing a dentition model: and reconstructing a three-dimensional model of the dentition from the dentition three-dimensional data 1 by using reverse reconstruction software to obtain dentition data 2 before orthodontic treatment of the patient, wherein the dentition data 2 before orthodontic treatment of the patient is shown in fig. 2, and in the embodiment, the reverse reconstruction software is Geomagic Studio.
3) The dentition data 2 before orthodontic treatment of a patient is firstly led into digital processing software, each tooth is divided by using a dividing function in the software, a dividing line is arranged between two teeth during division and cannot be cut into the teeth, a tooth jaw model is rotated, the teeth are accurately separated from the dividing line at each angle, virtual digital tooth arrangement is carried out through commands of rotation, translation and the like, an orthodontic scheme is obtained, a treated orthodontic treatment target dentition 3 is discharged, and the orthodontic treatment target dentition 3 is shown in figure 3.
4) According to an orthodontic treatment target dentition 3, removing a region with overlapped adjacent teeth to obtain a form of each tooth after stripping, registering the stripped tooth with a middle tooth before stripping, keeping the position of the tooth before stripping still, registering the stripped tooth by using functions of translation, rotation and the like, wherein the unglazed parts of the two teeth are matched during registration, the jaw planes of the two teeth are consistent, so as to obtain an accurate position of the stripped tooth in an oral cavity, a contour displayed in the near-far direction of the stripped tooth is an adjacent surface of the stripping surface, the vertical distance from an outer vertex of each tooth along an arch line to the adjacent surface is measured, the measured distance is the amount of stripping required in the near-far direction of each tooth, a corresponding entity is established according to the measured stripping amount and the adjacent surface of the stripping surface, and the entity part is a stripping region 4 which actually needs stripping, the stripping area 4 is shown in figure 4,
5) according to the dentition data 2 before the orthodontic treatment of the patient obtained in the step 2), the whole dentition guide plate 5 of the patient is generated by using a tooth surface thickening method in three-dimensional software, and inverted dents are removed, wherein the dentition guide plate 5 of the patient is shown in figure 5, in the embodiment, the three-dimensional software is SolidWorks or UG,
6) subtracting the stripping area 4 in the step 4) from the patient dentition guide plate 5, selecting a stripping tool at each stripping area 4 position according to the stripping amount, designing a guide opening for stripping operation, cutting the dentition guide plate 5 to reserve proper teeth in place according to the number of teeth in place to obtain a personalized stripping guide plate, wherein the stripping guide plate is shown in figure 6,
7) printing a stripping guide plate made of a resin material by utilizing a photocuring forming S L A printing technology according to a personalized stripping guide plate, wherein the main trial function of the stripping guide plate is a windowing part, trial wearing is carried out on a plaster model after post-treatment supporting is carried out, the guide plate generated by software possibly has undercut to cause the guide plate to be not tightly attached, a metal sanding head is used for removing the convex part between neighbors, undercut is removed until the trial wearing and attaching on the model are tightly attached,
8) in clinical use, the stripping guide plate is fixed on a patient tooth array, and the stripping operation is finished under the guidance of the guide opening by using the selected stripping tool. The stripping tool is a commercially available orthodontic adjacent surface stripping tool, has no special requirement, and is selected according to the stripping amount.
As shown in fig. 6-7, the stripping guide plate comprises a guide plate body 6, wherein the guide plate body 6 is provided with an inwardly recessed dentition nest cavity 12, two ends of the dentition nest cavity 12 penetrate through two ends of the guide plate body 6, the bottom of the dentition nest cavity 12 penetrates through the lower surface of the guide plate body 6, at least one grinding window 61 is arranged on the upper surface of the guide plate body 6, and the grinding window 61 is communicated with the dentition nest cavity 12. The guide plate body 6 can be made of 3D printing materials, and can also be made of plastics or other plastic materials according to actual conditions.
Those skilled in the art will appreciate that the particular dimensions of the fence body 6 may be made without limitation, depending on the size of the patient's dentition. In the present embodiment, the fence body 6 is a strip-like structure.
Specifically, the grinding window 61 extends from the upper surface of the fence body 6 to the side wall of the fence body 6. Preferably, the grinding window 61 extends from the upper surface of the guide plate body 6 to the bottom of the side wall of the guide plate body 6.
A seal 15 is provided between the end of the grinding window 61 and the side wall of the guide body 6, and the seal 15 is provided to prevent the grinding window 61 from penetrating the guide body 6.
Two side walls of the guide plate body 6 are respectively provided with a polishing stop strip 11 made of metal. The polishing stop strip 11 plays a role of polishing identification, and when the adjacent surface is subjected to the glaze removing work, the polishing stop strip 11 is preferably made of 304 stainless steel and can be made into a flat shape.
The polishing stop bars 11 can be arranged in one or more than one mode according to actual needs, the polishing stop bars 11 can be manufactured together with the guide plate body 6 as inserts, and can also be adhered to the side wall of the guide plate body 6 through glue.
The polishing stop 11 is connected to the end of the polishing window 61. Preferably, the position of the sanding stop 11 is slightly higher than the position of the end of the sanding window 61. More preferably, the position of the polishing stop strip 11 is 1-2mm higher than the end of the polishing window 61.
The two side walls of the guide plate body 6 are respectively provided with an elastic deformable anti-loosening plate 10 at the position corresponding to the grinding window 61, the bottom of the anti-loosening plate 10 extends to the lower part of the side wall of the guide plate body 6, and the grinding stop bar 11 is fixedly connected with the anti-loosening plate 10. The anti-loose plate 10 is made of silica gel or plastic.
As mentioned above, the grinding stop 11 may be integrally formed as an insert with the guide body 6 by three-dimensional printing or injection molding, in which case the anti-loosening plate 10 is glued to the grinding stop 11.
If the polishing stop strip 11 is not integrally formed with the guide plate body 6, the polishing stop strip 11 may be integrally formed with the anti-loose plate 10 as an insert or may be bonded to the anti-loose plate 10 by glue.
The two anti-loosening plates 10 are positioned on two sides of the guide plate body 6, and the bottoms of the two anti-loosening plates 10 are close to each other. Because the locking plate has elasticity, when 6 covers of baffle body are established on patient's tooth row, two locking plates 10 are strutted to press from both sides tight patient's gum position, make baffle body 6 more firm with being connected of tooth row, can not take place to become flexible at the in-process of polishing that goes glaze.
Combine fig. 8 to show, baffle body 6 covers on three-dimensional dentition data 1 through dentition nested cavity 12, and anti-loosening plate 10 pastes on the gum, forms the location, and the position of window 61 of polishing corresponds with the position that needs to go the glaze, and the doctor realizes accurate glaze of going through window 61 of polishing as the guide, has improved the precision and the efficiency of going the glaze.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A digitalized adjacent surface glaze removal method is characterized by comprising the following steps:
1) data acquisition: directly scanning the internal position of the oral cavity of a patient by using an oral scanner to obtain dentition three-dimensional data, or scanning a plaster dental model of the patient to obtain dentition three-dimensional data, establishing digital three-dimensional dentition data (1),
2) reconstructing a dentition model: reconstructing a three-dimensional model of the dentition from the dentition three-dimensional data (1) by using reverse reconstruction software to obtain dentition data (2) before orthodontic treatment of a patient,
3) the dentition data (2) before the orthodontic treatment of a patient is firstly led into digital processing software, each tooth is divided by using a dividing function in the software, a dividing line is between two teeth during the division, the teeth can not be cut, a tooth jaw model is rotated, the teeth are accurately separated by the dividing line from each angle, then virtual digital tooth arrangement is carried out, the treated orthodontic treatment target dentition (3) is discharged,
4) according to an orthodontic treatment target dentition, removing a region with overlapped adjacent teeth to obtain a form of each tooth after stripping, registering the stripped tooth with a middle tooth before stripping, keeping the position of the tooth before stripping still, registering the stripped tooth, wherein the un-stripped parts of the two teeth are matched when registering, the jaw planes of the two teeth are consistent, so as to obtain the accurate position of the stripped tooth in the oral cavity, the contour displayed in the near-far direction of the stripped tooth is the adjacent surface of stripping, measuring the vertical distance from the outer vertex of each tooth along the dental arch line to the adjacent surface, the measured distance is the amount of stripping required in the near-far direction of each tooth, establishing a corresponding entity according to the measured stripping amount and the adjacent surface of stripping, and the entity part is the stripping region (4) which actually corresponds to stripping,
5) generating a whole patient dentition guide plate (5) by using a tooth surface thickening method in three-dimensional software according to the dentition data (2) before the orthodontic treatment of the patient obtained in the step 2),
6) subtracting the stripping area (4) in the step 4) from the dentition guide plate (5) of the patient, designing a guide opening for stripping operation at each stripping area (4), cutting the dentition guide plate (5) to reserve proper teeth in place according to the number of the teeth in place to obtain a personalized stripping guide plate,
7) printing the stripping guide plate of the resin material by utilizing photocuring molding S L A printing technology according to the personalized stripping guide plate,
8) in clinical use, the stripping guide plate is fixed on a patient tooth array, and the stripping operation is finished under the guidance of the guide opening by using the selected stripping tool.
2. The digital adjacent surface stripping method according to claim 1, wherein the stripping guide plate comprises a guide plate body (6), the guide plate body (6) is provided with an inwardly recessed dentition nest cavity (12), two ends of the dentition nest cavity (12) penetrate through two ends of the guide plate body (6), the bottom of the dentition nest cavity (12) penetrates through the lower surface of the guide plate body (6), at least one grinding window (61) is arranged on the upper surface of the guide plate body (6), the grinding window corresponds to the position of a guide opening, and the grinding window (61) is communicated with the dentition nest cavity (12).
3. A digital adjacent surface stripping method as claimed in claim 2, characterized in that the grinding window (61) extends from the upper surface of the guide plate body (6) to the side wall of the guide plate body (6).
4. A digital adjacent surface stripping method according to claim 3, characterized in that the grinding window (61) extends from the upper surface of the guide plate body (6) to the bottom of the side wall of the guide plate body (6).
5. A digital adjacent surface stripping method according to claim 4, characterized in that a sealing part (15) is arranged between the end of the grinding window (61) and the side wall of the guide plate body (6).
6. A digital adjacent surface stripping method according to claim 2, characterized in that a grinding stop strip (11) made of metal is respectively arranged on two side walls of the guide plate body (6).
7. A digital adjacent surface stripping method as claimed in claim 6, characterized in that the polishing stop (11) is connected to the end of the polishing window (61).
8. A digital adjacent surface stripping method according to claim 6, characterized in that an elastically deformable anti-loosening plate (10) is respectively arranged on two side walls of the guide plate body (6) at the position corresponding to the grinding window (61), and the bottom of the anti-loosening plate (10) extends to the lower part of the side wall of the guide plate body (6).
9. The digital adjacent surface stripping method according to claim 6, characterized in that an elastically deformable anti-loosening plate (10) is respectively arranged on two side walls of the guide plate body (6) and at a position corresponding to the grinding window (61), the bottom of the anti-loosening plate (10) extends to the lower part of the side wall of the guide plate body (6), and the grinding stop strip (11) is fixedly connected with the anti-loosening plate (10).
10. A digital adjacent surface stripping method according to claim 8 or 9, characterized in that two anti-loose plates (10) are positioned at two sides of the guide plate body (6), and the bottoms of the two anti-loose plates (10) are close to each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010311210.8A CN111481309A (en) | 2020-04-20 | 2020-04-20 | Digital adjacent surface glaze removing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010311210.8A CN111481309A (en) | 2020-04-20 | 2020-04-20 | Digital adjacent surface glaze removing method |
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| CN204542409U (en) * | 2015-01-30 | 2015-08-12 | 杭州一牙数字口腔有限公司 | Proximal surface can be detected and go the clinical template of the Invisible appliances of glaze |
| WO2019071081A1 (en) * | 2017-10-05 | 2019-04-11 | Align Technology, Inc. | Interproximal reduction templates |
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| CN209678720U (en) * | 2018-11-23 | 2019-11-26 | 武汉大学 | A kind of novel transparent resin nucleation guide plate |
| CN209734212U (en) * | 2019-01-04 | 2019-12-06 | 上海精功齿科技术有限公司 | Guide plate for gum trimming |
| US20190374304A1 (en) * | 2018-06-07 | 2019-12-12 | Brent K. Lopez | Device and method for interproximal reduction |
| CN209847442U (en) * | 2018-12-19 | 2019-12-27 | 上海正雅齿科科技股份有限公司 | Slice cutting guide plate |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204542409U (en) * | 2015-01-30 | 2015-08-12 | 杭州一牙数字口腔有限公司 | Proximal surface can be detected and go the clinical template of the Invisible appliances of glaze |
| WO2019071081A1 (en) * | 2017-10-05 | 2019-04-11 | Align Technology, Inc. | Interproximal reduction templates |
| US20190374304A1 (en) * | 2018-06-07 | 2019-12-12 | Brent K. Lopez | Device and method for interproximal reduction |
| CN209678720U (en) * | 2018-11-23 | 2019-11-26 | 武汉大学 | A kind of novel transparent resin nucleation guide plate |
| CN209847442U (en) * | 2018-12-19 | 2019-12-27 | 上海正雅齿科科技股份有限公司 | Slice cutting guide plate |
| CN209734212U (en) * | 2019-01-04 | 2019-12-06 | 上海精功齿科技术有限公司 | Guide plate for gum trimming |
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