CN110368110B - Method for manufacturing appliance for keeping median relation position - Google Patents
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- CN110368110B CN110368110B CN201910746876.3A CN201910746876A CN110368110B CN 110368110 B CN110368110 B CN 110368110B CN 201910746876 A CN201910746876 A CN 201910746876A CN 110368110 B CN110368110 B CN 110368110B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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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
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Abstract
A method for manufacturing an appliance for maintaining a median relationship position comprises the following steps: step 1, precisely positioning a middle relation position to find the middle relation position; step 2, keeping the precisely positioned center relation position, scanning the occlusion relation of the patient at the moment in the upper and lower dentition interfaces stored before by using a 3D scanner, obtaining the full-oral dentition occlusion relation position under the center relation position at the moment, and uploading the scanning result to computer aided printing design software; step 3, carrying out model design by using 3D printing design software; step 4, printing the model designed in the step 3, adopting a diaphragm for bracket-free invisible correction, then pressing a film on the printed model, and keeping the median relation position of the patient by utilizing the manufactured bracket-free invisible correction; has the characteristics of simple, quick and efficient operation.
Description
Technical Field
The invention belongs to the technical field of orthodontic treatment, and particularly relates to a method for maintaining a median relation position. Including the digital applications of non-invasive electronic facebow, 3D scanning, and computer-aided printing design.
Background
The median relation position has important significance for occlusion reconstruction, examination and treatment of the median relation, orthodontic treatment, examination and treatment of temporomandibular joint dysfunction syndrome and the like. Although the central relationship position has good repeatability, there are still many problems in accurately positioning the central relationship position, and its accuracy is affected by many factors, such as the operating method of the operator, the dependency of the patient, etc. It is more difficult to precisely locate and maintain the medial relation in the clinic.
Currently, methods for locating the median relationship position include gothic arch mapping, swallowing-biting method, licking after tongue rolling, functional reflex method, chin induction method, bilateral holding method, mandibular movement trajectory mapping, muscle monitoring method, and the like. However, the existing positioning methods have respective limitations, and the center-of-positioning relationship cannot be ideally realized, so that the maintenance is more difficult to realize.
In recent years, with the development of digitization, more and more digitization techniques are applied to oral clinics. The noninvasive electronic facial arch combines 3D scanning, computer-aided printing design and bracket-free invisible correction technology, and lays a theoretical foundation for accurate positioning of the median relation. However, at present, it is difficult to precisely locate the median relationship position, and there is no method for maintaining the median relationship position in clinic. Therefore, how to accurately determine the median relationship position. How to maintain the accurate positioned center relation position. These problems are critical problems to be solved urgently in the clinic.
The noninvasive electronic face bow is simple to operate, can simulate the functions of mandible movement and occlusion, finds out an accurate center relation position through repeated movement, and can be directly connected with a 3D scanner. The computer aided printing design is combined with a 3D scanning technology to visualize virtual things, needed things are designed on a computer and then printed out, and virtual things expected by people are converted into real things. The bracket-free invisible orthodontic treatment becomes an emerging technology on the basis, the use of the bracket-free invisible orthodontic treatment is based on correct and comprehensive orthodontic treatment concept and target, the attractiveness of teeth is emphasized, and the stability and the function of the lower jaw position are emphasized to be matched with the health and coordination of facial muscles.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for manufacturing an appliance for maintaining a centre relation position, which solves the technical problems of accurately positioning the centre relation position of the mandible and maintaining the accurately positioned centre relation position, and has the characteristics of simple, quick and efficient operation.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for manufacturing an appliance for maintaining a median relationship position comprises the following steps:
step 1, accurate positioning of the center relation position
Firstly, scanning and storing the maxillary dentition and the mandibular dentition by using a 3D scanner; then the patient wears the non-invasive electronic face bow to carry out occlusion actions at three positions, namely, crossing and dislocating the cusp, contra-cutting the front teeth and occluding the left and right sides; repeatedly making the three occlusion positions, automatically recording the lower jaw movement track by the electronic face bow, and automatically prompting the center relation position by the electronic face bow when the center relation position is accurately found by the electronic face bow;
step 2, keeping the accurate positioned center relation position
After the central relation position is accurately positioned, the central relation position is kept still, then a 3D scanner is utilized to scan the occlusion relation of the patient at the moment in the upper and lower dentition interfaces which are stored before, at the moment, the full-mouth dentition occlusion relation position under the central relation position is obtained, and the scanning result is uploaded to computer-aided printing design software;
step 3, utilizing 3D printing design software to carry out model design
Designing on dentition in 3D printing design software (see figure 1), designing a semicircular concave surface with the width of 5mm and the depth of 4mm on interproximal sulcus of canine teeth on two sides of lower jaw dentition and first premolar teeth, wherein the concave surface is parallel to the lower jaw dentition;
designing a semicircular concave surface with the width of 5mm and the depth of 4mm in the interproximal sulcus of the first premolar and the second premolar on both sides of the lower jaw dentition, wherein the concave surface is parallel to the lower jaw dentition; designing a semicircular concave surface with the width of 5mm and the depth of 4mm on the interproximal sulcus of the second premolar and the first molar on both sides of the mandibular dentition, wherein the concave surface is parallel to the mandibular dentition;
designing a semicircular concave surface with the width of 5mm and the depth of 4mm in the interproximal sulcus of the first molar and the second molar on both sides of the lower jaw dentition, wherein the concave surface is parallel to the lower jaw dentition;
designing a cylinder on the semicircular concave surface of the two sides of the maxillary dentition corresponding to the lower jaw, wherein the width of the cylinder is 4mm, and the length of the cylinder is designed to be corresponding to the distance between the posterior teeth of the patient in the median relationship (see figure 2);
designing a short cylinder with the width of 4mm and the length of 3mm in an interproximal groove of the first premolar and the second premolar on both sides of the upper jaw dentition, wherein the cylinder is parallel to the dentition;
designing a short cylinder with the width of 4mm and the length of 3mm in the interproximal sulcus of the second premolar and the first molar on both sides of the maxillary dentition, wherein the cylinder is parallel to the dentition;
designing short cylinders with the width of 4mm and the length of 3mm on the first molar and the second molar on two sides of the upper jaw dentition, wherein the cylinders are parallel to the dentition;
and 4, printing the model designed in the step 3, adopting a diaphragm for bracket-free invisible correction, pressing a film on the printed model, and keeping the median relationship position of the patient by utilizing the manufactured bracket-free invisible correction (see fig. 3 and 4).
Compared with the prior art, the invention has the following beneficial technical effects:
the electronic face bow positioning center relation adopted by the invention is non-invasive, simple, quick and accurate, and can be repeatedly positioned;
the invention adopts 3D scanning, computer aided printing design and bracket-free invisible correcting technology, completely embodies the digital technology, and the manufactured correcting device keeping the center relation position can not only be stressed evenly on both sides, but also not affect the beauty and can achieve better curative effect.
The method for keeping the relation position in the middle combines the technologies of non-invasive electronic face bow, 3D scanning, computer-aided printing design and bracket-free invisible correction, completely realizes the digitization of treatment in the orthodontic field, and has the characteristics of simple, quick and efficient operation.
The invention discloses a method for keeping a median relationship position by adopting a noninvasive electronic facial arch, a 3D scanner technology and a computer-aided printing design combined with a bracket-free invisible appliance. So far, no method for maintaining the mandibular median relation has been reported.
Drawings
Fig. 1 is a top view of the mandible of a 3D printing design.
Fig. 2 is a top view of the upper jaw of the 3D printed design.
Fig. 3 is a side view of the orthosis after wear.
Fig. 4 is a front view after being worn for correction.
Detailed Description
The invention provides a simple and efficient appliance manufacturing method for keeping a median relation position, which utilizes a noninvasive electronic facial arch, a 3D scanning technology, a computer-aided printing design and a bracket-free invisible appliance technology.
Step 1, accurate positioning of the center relation position
Selecting patients with clinically symptomatic reversible disk antedisplacement:
a) the opening and closing opening is bounced; b) the open type is deflected to the affected side before the sound occurs, and returns to the midline after the sound occurs; c) tenderness in the joint area;
firstly, scanning and storing the maxillary dentition and the mandibular dentition by using a 3D scanner; then the patient wears the non-invasive electronic face bow to carry out occlusion actions at three positions, namely, crossing and dislocating the cusp, contra-cutting the front teeth and occluding the left and right sides; repeatedly making the three occlusion positions, automatically recording the lower jaw movement track by the electronic face bow, and automatically prompting the center relation position by the electronic face bow when the center relation position is accurately found by the electronic face bow;
step 2, keeping the accurate positioned center relation position
After the central relation position is accurately positioned, the central relation position is kept still, then a 3D scanner is utilized to scan the occlusion relation of the patient at the moment in the upper and lower dentition interfaces which are stored before, at the moment, the full-mouth dentition occlusion relation position under the central relation position is obtained, and the scanning result is uploaded to computer-aided printing design software;
step 3, utilizing 3D printing design software to carry out model design
Designing on dentition in 3D printing design software (see figure 1), designing a semicircular concave surface with the width of 5mm and the depth of 4mm on interproximal sulcus of canine teeth on two sides of lower jaw dentition and first premolar teeth, wherein the concave surface is parallel to the lower jaw dentition;
designing a semicircular concave surface with the width of 5mm and the depth of 4mm in the interproximal sulcus of the first premolar and the second premolar on both sides of the lower jaw dentition, wherein the concave surface is parallel to the lower jaw dentition; designing a semicircular concave surface with the width of 5mm and the depth of 4mm on the interproximal sulcus of the second premolar and the first molar on both sides of the mandibular dentition, wherein the concave surface is parallel to the mandibular dentition;
designing a semicircular concave surface with the width of 5mm and the depth of 4mm in the interproximal sulcus of the first molar and the second molar on both sides of the lower jaw dentition, wherein the concave surface is parallel to the lower jaw dentition;
a cylinder is designed on the semicircular concave surface of the two sides of the maxillary dentition corresponding to the lower jaw, the width of the cylinder is 4mm, and the length of the cylinder is designed to be corresponding to the distance between the posterior teeth of the patient in the median relationship (see figure 2). For example: in the middle position, the distance between the upper and lower posterior teeth is 3mm, and the design is as follows: a short cylinder with the width of 4mm and the length of 3mm is designed between the canine teeth on both sides of the upper jaw dentition and the interproximal sulcus of the first premolar, and the cylinder is parallel to the dentition.
Designing a short cylinder with the width of 4mm and the length of 3mm in an interproximal groove of the first premolar and the second premolar on both sides of the upper jaw dentition, wherein the cylinder is parallel to the dentition;
designing a short cylinder with the width of 4mm and the length of 3mm in the interproximal sulcus of the second premolar and the first molar on both sides of the maxillary dentition, wherein the cylinder is parallel to the dentition;
designing short cylinders with the width of 4mm and the length of 3mm on the first molar and the second molar on two sides of the upper jaw dentition, wherein the cylinders are parallel to the dentition;
and 4, printing the model designed in the step 3, adopting a diaphragm for bracket-free invisible correction, pressing a film on the printed model, and keeping the median relationship position of the patient by utilizing the manufactured bracket-free invisible correction (see fig. 3 and 4).
The length of the upper jaw cylinder is correspondingly adjusted according to the tooth distance behind the median position. Adjusting the length of the maxillary cylinder to 3mm if the medial relation is open and occluded 3mm, which is determined according to the medial relation position of the positioning; the opening degree of the center relation position of each patient is different, the length is different, and as long as the center relation position is well positioned, 3D printing software is input, the length of the maxillary cylinder is matched with the center relation position.
Claims (1)
1. A method for manufacturing an appliance for maintaining a median relationship position is characterized by comprising the following steps:
step 1, accurate positioning of the center relation position
Firstly, scanning and storing the maxillary dentition and the mandibular dentition by using a 3D scanner; then the patient wears the non-invasive electronic face bow to carry out occlusion actions at three positions, namely, crossing and dislocating the cusp, contra-cutting the front teeth and occluding the left and right sides; repeatedly doing the three positions to do occlusion action, automatically recording the lower jaw movement track by the electronic face bow, and automatically prompting the center relation position by the electronic face bow when the center relation position is accurately found by the electronic face bow;
step 2, keeping the accurate positioned center relation position
After the central relation position is accurately positioned, the central relation position is kept still, then a 3D scanner is utilized to scan the occlusion relation of the patient at the moment in the upper and lower dentition interfaces which are stored before, at the moment, the full-mouth dentition occlusion relation position under the central relation position is obtained, and the scanning result is uploaded to computer-aided printing design software;
step 3, utilizing 3D printing design software to carry out model design
Designing on dentition in 3D printing software, designing a semicircular concave surface with the width of 5mm and the depth of 4mm on the interproximal sulcus of canine teeth on both sides of the lower jaw dentition and the first premolar, wherein the concave surface is parallel to the lower jaw dentition;
designing a semicircular concave surface with the width of 5mm and the depth of 4mm in the interproximal sulcus of the first premolar and the second premolar on both sides of the lower jaw dentition, wherein the concave surface is parallel to the lower jaw dentition; designing a semicircular concave surface with the width of 5mm and the depth of 4mm on the interproximal sulcus of the second premolar and the first molar on both sides of the mandibular dentition, wherein the concave surface is parallel to the mandibular dentition;
designing a semicircular concave surface with the width of 5mm and the depth of 4mm in the interproximal sulcus of the first molar and the second molar on both sides of the lower jaw dentition, wherein the concave surface is parallel to the lower jaw dentition;
designing a cylinder on the semicircular concave surface of the two sides of the maxillary dentition corresponding to the lower jaw, wherein the width of the cylinder is 4mm, and the length of the cylinder is designed to be corresponding to the distance between the rear teeth of the patient in the middle relationship position;
designing a short cylinder with the width of 4mm and the length of 3mm in an interproximal groove of the first premolar and the second premolar on both sides of the upper jaw dentition, wherein the cylinder is parallel to the dentition;
designing a short cylinder with the width of 4mm and the length of 3mm in the interproximal sulcus of the second premolar and the first molar on both sides of the maxillary dentition, wherein the cylinder is parallel to the dentition;
designing short cylinders with the width of 4mm and the length of 3mm on the first molar and the second molar on two sides of the upper jaw dentition, wherein the cylinders are parallel to the dentition;
and 4, printing the model designed in the step 3, adopting a diaphragm for bracket-free invisible correction, then pressing a film on the printed model, and keeping the median relation position of the patient by using the manufactured bracket-free invisible correction device.
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| CN111956347B (en) * | 2020-08-03 | 2022-03-18 | 厦门医学院附属口腔医院(厦门市口腔医院) | Temporal-mandibular joint condylar development inducer and preparation method thereof |
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| US9655692B2 (en) * | 2013-11-19 | 2017-05-23 | Kelly Wade Lucas | Pre-fabricated anterior guidance package kit for patients having bruxism/clenching habit with or without various malocclusions-II |
| CN109481067B (en) * | 2018-12-24 | 2020-09-22 | 中国人民解放军总医院 | 3D printed occlusal plate for treating temporomandibular joint disorder and preparation method thereof |
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| CN202235718U (en) * | 2011-08-28 | 2012-05-30 | 王勇 | Corrector for pushing front teeth to move to mesioocclusion |
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Effective date of registration: 20220915 Address after: The workshop on the southeast side of the fourth floor of the standard workshop of No. B1, Medical Incubation Park, No. 9 Changyang Road, West Taihu Science and Technology Industrial Park, Changzhou City, Jiangsu Province, 213000 Patentee after: CLEAR MEDICAL TECHNOLOGY (CHANGZHOU) CO.,LTD. Address before: No.145, Changle West Road, Xincheng District, Xi'an, Shaanxi 710000 Patentee before: THE FOURTH MILITARY MEDICAL University Patentee before: Yanan University Affiliated Hospital |