CN214049142U

CN214049142U - Self-fixing type individualized lower jaw retainer

Info

Publication number: CN214049142U
Application number: CN202022616068.6U
Authority: CN
Inventors: 俞蕾蕾; 杨驰; 郑吉驷; 恽白; 张琴; 罗怡
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-27
Anticipated expiration: 2030-11-12

Abstract

The utility model relates to the field of medical equipment, in particular to a self-fixing type individualized lower jaw retainer, which comprises a upper jaw tooth sleeve fixing piece for fitting upper teeth and a lower jaw tooth occlusal plate for keeping the lower jaw, wherein the upper jaw tooth sleeve fixing piece and the lower jaw tooth occlusal plate are connected through an occlusal connecting part; the upper jaw tooth sleeve fixing piece comprises an upper jaw tooth fixing groove corresponding to the upper jaw dentition; the lower jaw tooth accommodating groove corresponding to the lower jaw dentition is formed in the bottom of the lower jaw tooth occlusal plate. The patient can wear the lower jaw retainer to fix the lower jaw at the proper position of the designed lower jaw of the computer by means of the upper jaw tooth sleeve and the bite plate, and the proper lower jaw position is designed and adjusted according to different rehabilitation stages of the patient, so that the effect of preventing the lower jaw from being retracted after the operation can be achieved.

Description

Self-fixing type individualized lower jaw retainer

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a from fixed individuation lower jaw keeps ware.

Background

After a temporomandibular joint disc displacement patient receives temporomandibular joint disc reduction surgery, in order to establish a good occlusion relationship, the mandible position of the patient needs to be adjusted to an ideal treatment position. However, new occlusal relationships require constant adjustment of the neuromuscular system to achieve final stabilization. Therefore, the patient needs to wear the holder to stabilize the lower jaw in the proper position after surgery to improve the patient's bite relationship.

Currently, mandibular leading function appliances, repositioning/protrusive repositioning appliances, and Herbst appliances are commonly used for adjusting the mandibular position. The existing appliance and the combined pad have the following defects: 1. the manufacturing process is complicated, needs a plurality of working procedures, and is time-consuming and labor-consuming; 2. the material is hard material, so the wearing comfort is not good; 3. the cleaning is not easy, the oral hygiene of a patient is greatly influenced after the long-term wearing; 4. metal accessories are attached to affect the appearance; 5. the daily language function of the patient is influenced due to insufficient portability; 6. the forces are borne by individual teeth, and the dentition morphology changes with long-term wear.

With the rapid development of the 3D printing technology, transparent elastic resin is applied, and the oral occlusion data and the mandibular repositioning quantitative calculation of a patient are combined, so that a digital mandible holder which meets the rehabilitation process of the patient after the temporomandibular joint disc reduction is required to be designed, and the defects of the existing apparatus are overcome.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a personalized occlusal plate type mandibular holder which can stabilize the position of the mandible and is beautiful and comfortable, for use after the reduction of the temporomandibular joint disc, and for solving the problems in the prior art.

In order to achieve the above and other related objects, the present invention provides a self-fixing type individualized lower jaw holder, including a upper dental abutment retainer for fitting upper teeth, and a lower dental articulator for holding lower jaw, the upper dental abutment retainer and the lower dental articulator being connected by an occlusal connection portion; the upper jaw tooth sleeve fixing piece comprises an upper jaw tooth fixing groove corresponding to the upper jaw dentition; the lower jaw dental occlusal plate is characterized in that a lower jaw tooth accommodating groove corresponding to a lower jaw dentition is arranged at the bottom of the lower jaw dental occlusal plate, the coating area of the upper jaw dentition outer surface by the upper jaw dental cover retaining piece is 80-90% of the total area of the upper jaw dentition outer surface, the depth of the upper jaw dental cover retaining groove is 4-9 mm, the coating area of the lower jaw dental cover outer surface by the lower jaw dental cover retaining plate is 20-30% of the total area of the lower jaw dentition outer surface, the depth of the lower jaw tooth accommodating groove is 2-4 mm, when the upper jaw dental cover retaining piece is attached to the upper jaw dentition outer surface, the upper jaw dental cover retaining piece extends from a second molar on one side to a second molar on the other side, and when the lower jaw dental occlusal plate is attached to the lower jaw dentition outer surface, the lower jaw dental occlusal plate extends from the second molar on one side to the second molar on the other side.

In some embodiments of the present invention, the wall thickness of the maxillary dental abutment retainer is 0.6 to 0.8 mm.

In some embodiments of the present invention, the width of the maxillary dental abutment retainer is 5 to 15 mm.

In some embodiments of the present invention, the height of the maxillary dental abutment is 5 to 10 mm.

In some embodiments of the invention, the wall thickness of the mandibular teeth bite plate is 2-4 mm.

In some embodiments of the invention, the width of the mandibular teeth bite plate is 7-15 mm.

In some embodiments of the invention, the height of the mandibular teeth bite plate is 2-4 mm.

In some embodiments of the present invention, the width of the engaging connection portion is 7 to 15 mm.

In some embodiments of the present invention, the height of the engaging connection portion is 1 to 2 mm.

In some embodiments of the present invention, the coated area of the mandibular occlusal plate on the outer surface of the mandibular dentition is between 25% and 30% of the total area of the outer surface of the mandibular dentition.

Drawings

Fig. 1 shows a schematic perspective view of a first angle of the self-fixating individualized mandibular holder of the present invention.

Fig. 2 shows a schematic perspective view of a second angle of the self-fixating individualized mandibular holder of the invention.

Fig. 3 shows a schematic perspective view of a third angle of the self-fixating individualized mandibular holder of the present invention.

Fig. 4 shows a schematic perspective view of a fourth angle of the self-fixating individualized mandibular holder of the present invention.

Description of the element reference numerals

1 maxillary tooth cover fixing part

11 maxillary tooth fixing groove

2 lower jaw dental articulator

21 mandibular teeth holding groove

3 snap-in connection

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 4. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The utility model discloses the applicant provides a new from fixed individuation mandible keep ware and construction method through a large amount of exploratory studies, from fixed individuation mandible keep ware and be used for temporomandibular joint dish postoperative to reset to use, can stabilize the lower jaw position, pleasing to the eye and comfortable, accomplished on this basis the utility model discloses a lower jaw position is fixed to the self-fixing individuation mandible keep ware.

The utility model discloses the first aspect provides a construction method from fixed individuation lower jaw keeps ware model, include:

s1) constructing and obtaining a jaw three-dimensional fusion model based on the jaw three-dimensional model, the upper jaw three-dimensional model and the lower jaw three-dimensional model;

s2) constructing and obtaining a maxillary tooth cover fixing area based on the outer surface of the maxillary dentition, and forming a maxillary tooth fixing groove corresponding to the mandibular dentition in the maxillary tooth cover fixing area;

s3) constructing and obtaining a lower jaw occlusal plate area based on the outer surface of the lower jaw dentition, and forming a lower jaw teeth accommodating groove corresponding to the lower jaw dentition at the bottom of the lower jaw teeth occlusal plate area;

s4) constructing an occlusal connection zone connecting the maxillary dental cuff retention zone and the mandibular dental occlusal plate zone.

The utility model provides a from fixed individuation lower jaw keeps construction method of ware model obtains jaw three-dimensional model, jaw three-dimensional model can obtain after leading-in software of CT data usually, specifically can be software such as Membraw, micics, jaw can include positions such as maxilla, mandible usually.

The utility model provides a from the construction method of fixed individuation lower jaw keeps ware model, acquires upper jaw tooth three-dimensional model and lower jaw tooth three-dimensional model. When obtaining a three-dimensional model of the upper and/or lower teeth, typically for patients with pre-operative openness exceeding 2cm, the upper and lower teeth may be cast (e.g., by pouring a plaster model), and the model scanned (e.g., by laser scanning). For a patient with the mouth opening degree less than 2cm before the operation, CT scanning can be performed before the operation, the layer thickness is 0.625mm, point cloud data of an upper jaw and a lower jaw (namely, model surface data are recorded through point coordinates) are obtained, the point cloud data are imported into software, converted into a triangular patch model, and the model surface is repaired, so that a three-dimensional model of the upper jaw and a three-dimensional model of the lower jaw are generated, the model file format can be a Dicom format, and specifically can be software such as Medarw, 3-matic, Geomagic and matlab. The three-dimensional model of the upper jaw teeth comprises the upper jaw teeth, periodontal tissues and the like, and the three-dimensional model of the lower jaw teeth comprises the lower jaw teeth, the periodontal tissues and the like.

The utility model provides a construction method from fixed individuation lower jaw keeps ware model can include: and constructing and obtaining a three-dimensional fusion model based on the jaw three-dimensional model, the upper jaw three-dimensional model and the lower jaw three-dimensional model. Because the jaw three-dimensional model usually cannot accurately reflect the real structures of the tooth part and the peripheral soft tissues thereof, and has a large error, the upper jaw three-dimensional model and the lower jaw three-dimensional model need to be combined with the jaw three-dimensional model, so that a more accurate jaw whole three-dimensional model is obtained. In fusion, it is often necessary to register at least three reference points based on multiple reference points, such as at least three reference points, which may be tooth surface landmarks, such as cuspids, premolars, cuspids of molars, incisal marginal nodules on crowns, etc., to improve accuracy more effectively.

The utility model provides a from construction method of fixed individuation lower jaw keeps ware model can include based on the upper jaw dentition surface, and the construction obtains upper jaw facing retaining area, forms the upper jaw tooth retaining groove that corresponds with the upper jaw dentition in upper jaw facing retaining area. The maxillary dental cuff retention area is generally constructed based on the maxillary dentition outer surface, which is a maxillary crown portion (a portion where the maxillary teeth are exposed), and specifically includes labial side, lingual side and occlusal surface of the maxillary dentition. For example, a fitting surface of the retention area of the upper dental mouthpiece, which is fitted to the outer surface of the upper dental dentition, may be constructed based on the outer surface of the upper dental dentition, and the fitting surface of the retention area of the upper dental mouthpiece may include three surfaces that can wrap the upper dental dentition. The binding face of the maxillary tooth cover fixing area is generally tightly attached to the outer surface of the maxillary dentition, so that the maxillary dentition can be fixed well through the maxillary tooth cover fixing area, and self-fixing is realized. And then extending towards the outer side direction of the fitting surface of the retaining area of the upper dental brace (namely the direction of the fitting surface of the retaining area of the upper dental brace opposite to the outer surface of the upper teeth) according to the fitting surface of the retaining area of the upper dental brace, thereby constructing and obtaining the retaining area of the upper dental brace. The upper jaw tooth cover fixing area is precisely jointed with the upper jaw teeth, plays a role of fixing the lower jaw retainer and can be used as a force application fulcrum for fixing the lower jaw position. The abutment surface of the retention region of the maxillary dental cuff extends laterally outwardly a distance generally corresponding to the thickness of the walls of the maxillary teeth. Generally, the portions of the retaining region of the maxillary dental implant may extend outwardly substantially the same distance to form a wall thickness of the retaining region of the maxillary dental implant of uniform thickness. The thickness of the holding area of the upper jaw tooth cover can be 0.6-0.8 mm, 0.6-0.7 mm, or 0.7-0.8 mm, etc. The width direction of the maxillary dental cuff retention area is consistent with the extending direction of the maxillary dental cuff retention area from the lingual side to the labial side, and the width of the maxillary dental cuff retention area can be, for example, 5 to 15mm, 5 to 10mm, 10 to 15mm, 10 to 12mm, 12 to 15mm, or the like. The height direction of the retaining area of the upper jaw tooth cover is vertical to the extending direction from the tongue side to the lip side or forms a certain angle. The height of the upper jaw tooth cover fixing area can be 5-10 mm for example; 5-9 mm; 9-10 mm; 5-8 mm or 8-10 mm. The height of each part of the fixing area of the upper jaw dental sleeve is matched with the corresponding tooth. The constructed retention area of the upper jaw tooth sleeve covers the upper dentition, and then the upper dentition model is removed, thus obtaining the upper jaw tooth retention groove matched with each upper tooth.

Under the general condition, when the upper jaw tooth cover fixing area is attached to the outer surface of the upper jaw dentition, the upper jaw tooth cover fixing area can extend from the second molar on one side to the second molar on the other side on the horizontal plane, and the coating area of the upper jaw dentition outer surface by the upper jaw tooth cover fixing area is 80-90%, 80-85%, or 85-90% of the total area of the upper jaw dentition outer surface. Thus, the force is born by the whole dentition, the stress is dispersed, and the individual teeth can be protected. It is further explained that two ends of the maxillary tooth retention groove are respectively an upper left molar matching part corresponding to the second molar on one side of the maxillary teeth and an upper right molar matching part corresponding to the second molar on the other side of the maxillary teeth. The groove body depth of the maxillary tooth retaining groove can be 4-9 mm, for example; 4-6 mm; 6-9 mm, etc. The deep, generally continuous, maxillary retention grooves are used for accommodating the maxillary dentition extending from the second molars on one side to the second molars on the other side, so that the maxillary dentition can be well retained. The upper teeth sleeve fixing area is in a horseshoe shape and is consistent with the arch shape of the upper teeth.

The utility model provides a construction method from fixed individuation lower jaw keeps ware model can include based on lower jaw dentition surface, and the construction obtains lower jaw tooth interlock board district. The mandibular occlusal plate region is typically constructed based on the outer surface of the mandibular dentition, which is the crown portion of the lower teeth (the portion of the lower teeth that are exposed), specifically including the labial side, lingual side and occlusal surface of the mandibular dentition. For example, a mandibular occlusal plate area contact surface may be constructed to contact the mandibular dentition outer surface based on the mandibular dentition outer surface, and the mandibular dentition contact surface may correspondingly comprise three surfaces that may encapsulate the mandibular dentition. The area of the contact surface of the mandibular occlusal plate area is smaller than the area of the outer surface of the mandibular dentition, for example, the coating area of the mandibular occlusal plate area on the outer surface of the mandibular dentition is 20-30% of the total area of the outer surface of the mandibular dentition; 20-25%; or 25 to 30% by weight. The mandibular occlusal plate region contact surface is generally in contact with the outer surface of the mandibular dentition and may or may not be in intimate contact. And then extending towards the outer side direction of the contact surface of the lower jaw occlusion plate area (namely the direction of the contact surface of the lower jaw occlusion plate area opposite to the outer surface of the lower jaw) according to the contact surface of the lower jaw occlusion plate area, so as to construct and obtain the lower jaw occlusion plate area, wherein the extending distance can be 2-4 mm, 2-3 mm, 3-4 mm and the like. The distance of extension generally corresponds to the wall thickness of the mandibular occlusal plate region, and typically, portions of the contact surface of the mandibular occlusal plate region may extend substantially equally so as to form a mandibular occlusal plate region having a uniform wall thickness. The width direction of the lower jaw occlusion plate area is consistent with the extending direction of the lower jaw occlusion plate area from the tongue side to the lip side, and the width of the lower jaw occlusion plate area is 7-15 mm, 10-15 mm, 7-10 mm, 10-12 mm, 12-15 mm and the like. The height direction of the mandibular teeth occlusal plate area is perpendicular to or at a certain angle with the extending direction from the labial side to the lingual side. The height of the mandibular teeth occlusal plate area is 2-4 mm, 2-3 mm, or 3-4 mm, etc. The heights of the portions of the mandibular occlusal plate region may be substantially equal so that the height of the mandibular occlusal plate region formed is uniform. During the process of constructing the mandibular teeth occlusal plate region, the portions that contact the mandibular teeth will correspondingly form mandibular teeth receiving pockets.

Typically, the mandibular dental plate region may extend from one side of the second molars to the other side of the second molars when the mandibular dental plate region is engaged against the outer surface of the mandibular dentition. It is further described that two ends of the lower jaw teeth accommodating groove are respectively a lower left second molar matching part corresponding to one side second molar in the lower teeth and a lower right second molar matching part corresponding to the other side second molar. The groove body depth of the lower jaw tooth holding groove is shallower than that of the upper jaw tooth fixing groove, and the groove body depth of the lower jaw tooth holding groove can be 2-4 mm for example; 2-3 mm; 3-4 mm, etc. Generally, the mandibular teeth receiving groove is used to secure only a portion of the lower cusp. The mandibular teeth receiving groove may be continuous or discontinuous. The mandibular teeth occlusal plate area is horseshoe-shaped and is consistent with the position of the mandibular teeth of the patient, the shape of the occlusal surface fossa apicomplexa and the shape of the incisal end. In one embodiment, the lower jaw teeth holding groove is vertically spaced 2mm from the teeth wrapping the lower jaw, that is, the groove body depth of the lower jaw teeth holding groove is 2 mm. The upper teeth retaining groove and the lower teeth accommodating groove are mutually independent and are consistent with the positions and the shapes of the upper teeth and the lower teeth of the patient.

The utility model provides a from construction method of fixed individuation lower jaw keeps ware model can be including constructing the interlock joining region, the interlock joining region is connected upper jaw tooth cover fixed area and lower jaw tooth interlock board district. In particular, the bite-block region may extend from one side of the second molars to the other side of the second molars. The shape of the tooth sleeve is consistent with the shape of the contact surface of the upper jaw tooth sleeve retaining area and the lower jaw tooth occlusal plate area. The width of the occlusion connecting area is 7-15 mm, 10-15 mm, 7-10 mm, 10-12 mm, or 12-15 mm and the like. The height of the occlusion connecting area is 1-2 mm; 1-1.5 mm; or 1.5 to 2mm, etc. The height of the occlusion connecting area is consistent with the height direction of the maxillary dental sheath retaining area and the mandibular dental occlusion plate area. The upper jaw tooth cover fixing area, the lower jaw tooth occlusal plate area and the occlusal connecting area are integrally formed.

The utility model provides a from construction method of fixed individuation lower jaw keeps ware model, the material of model is transparent elastic resin. The transparency of the transparent elastic resin is 80-90%; 80-85%; or 85-90% of the total weight of the composition. The elastic modulus is 1 to 5Gpa, 1 to 3Gpa, or 3 to 5 Gpa. The elastic resin can well fix the maxillary tooth sleeve fixing area and the maxillary dentition, and is beautiful and comfortable to wear.

A second aspect of the present invention provides a method of making a self-fixating individualized mandibular holder, the method comprising: according to the utility model discloses the self-fixing formula individuation lower jaw keeps ware model that the construction method of self-fixing formula individuation lower jaw keeps ware model construct obtain, prepare self-fixing formula individuation lower jaw keeps ware. The method for preparing the self-fixed individualized lower jaw retainer from the self-fixed individualized lower jaw retainer model constructed and obtained by the construction method of the self-fixed individualized lower jaw retainer model of the utility model is known to the skilled person, for example, oral occlusion relation data can be obtained by CT scanning and oral scanner scanning, and the model can be prepared by combining computer digital modeling with 3D printing, and the used material can be transparent elastic resin and the like.

The third aspect of the present invention provides a self-fixing type individualized lower jaw retainer, which is obtained by the method for constructing a self-fixing type individualized lower jaw retainer model according to the first aspect of the present invention, or by the method for preparing a self-fixing type individualized lower jaw retainer according to the second aspect of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention provides a self-fixing type individualized lower jaw holder, which includes a upper dental mouthpiece holder 1 for fitting to an upper tooth, and a lower dental articulator 2 for holding a lower jaw, wherein the upper dental mouthpiece holder 1 and the lower dental articulator 2 are connected by an occlusal connection portion 3; the upper jaw tooth cover fixing piece 1 comprises an upper jaw tooth fixing groove 11 corresponding to an upper jaw dentition; the lower jaw teeth accommodating groove 21 corresponding to the lower jaw dentition is arranged at the bottom of the lower jaw teeth occlusal plate 2. The mandible holder can be used after 2 weeks of operation. When in use, the maxillary tooth retaining groove 11 on the maxillary tooth cover retaining piece 1 is matched with the maxillary dentition to realize self-fixation. The mandibular teeth receiving channel 21 is then used in conjunction with the mandibular dentition. A smaller protrusion (e.g., 2mm) holder may then be selected for use based on the pre-operative occlusion of the patient. When a patient wears the lower jaw retainer, no obvious muscle stretch feeling exists, the autonomous lower jaw position reaches the retainer fixed position and can be transited to the retainer at the next lower jaw position, and the upper and lower jaw occlusion relation of the patient in a natural state reaches an ideal condition.

The utility model provides a from among fixed individuation lower jaw keeps ware, like fig. 2, upper jaw facing retainer 1 is close laminating usually in the upper jaw from one side second molar to opposite side second molar, and the wall thickness of upper jaw facing retainer 1 equals with the distance that extends to upper jaw facing retainer fixed area laminating off-plate side direction. The thickness of the maxillary dental sheath holder 1 may be, for example, 0.6 to 0.8mm, 0.6 to 0.7mm, or 0.7 to 0.8 mm. The width direction of the maxillary dental cuff holder 1 is the same as the extending direction of the maxillary dental cuff holder 1 from the lingual side to the labial side, and the width of the maxillary dental cuff holder 1 may be, for example, 5 to 15mm, 5 to 10mm, 10 to 15mm, 10 to 12mm, or 12 to 15 mm. The height direction of the maxillary dental cap retainer 1 is vertical to or at a certain angle with the extending direction from the lingual side to the labial side. The height of the maxillary tooth cover fixing piece 1 can be 5-10 mm, for example; 5-9 mm; 9-10 mm; 5-8 mm or 8-10 mm. The upper jaw tooth sleeve fixing piece 1 is precisely attached to the upper jaw teeth, plays a role of fixing a lower jaw retainer and can be used as a force application fulcrum for fixing the position of the lower jaw. The upper teeth sleeve fixing piece 1 comprises upper teeth fixing grooves 11 matched with the upper teeth.

In the self-fixing individualized lower jaw retainer provided by the utility model, as shown in fig. 2, the coated area of the upper jaw dentition outer surface by the upper jaw dentition retaining piece 1 is 80-90%, 80-85%, or 85-90% of the total area of the upper jaw dentition outer surface, etc. When the maxillary dental arch retainer 1 is attached to the maxillary dentition outer surface (the maxillary dentition outer surface is a maxillary dental crown part and specifically includes the labial side, the lingual side and the occlusal surface of the maxillary dentition), the maxillary dental arch retainer 1 extends from the second molar on one side to the second molar on the other side. It is further explained that two ends of the maxillary tooth retention groove 11 are respectively an upper left molar mating part corresponding to one side second molar of the maxillary teeth and an upper right molar mating part corresponding to the other side second molar. The groove body depth of the maxillary tooth retention groove 11 can be 4-9 mm, for example; 4-6 mm; 6-9 mm, and the depth direction of the upper teeth fixing groove 11 is consistent with the height direction of the upper teeth sleeve fixing piece 1. The maxillary tooth retention groove 11 is deep and generally continuous to receive the maxillary dentition extending from the second molars on one side to the second molars on the other side, so that the maxillary dentition can be well retained. The upper jaw tooth cover retaining piece 1 is in a horseshoe shape and is consistent with the arch state of the upper teeth.

In the self-fixating individualized lower jaw holder provided by the present invention, as shown in fig. 1, the wall thickness of the lower jaw bite plate 2 is the distance extending in the direction outside the contact surface of the lower jaw bite plate area. The wall thickness of the mandibular teeth occlusal plate 2 is 2-4 mm, 2-3 mm, or 3-4 mm, etc. The width direction of the mandibular teeth occlusal plate 2 is the same as the extending direction of the mandibular teeth occlusal plate 2 from the lingual side to the labial side, and the width of the mandibular teeth occlusal plate 2 is 7-15 mm, 10-15 mm, 7-10 mm, 10-12 mm, or 12-15 mm, etc. The height direction of the mandibular teeth occlusal plate 2 is perpendicular to or at a certain angle with the extending direction from the labial side to the lingual side. The height of the mandibular teeth occlusal plate 2 is 2-4 mm, 2-3 mm, or 3-4 mm, etc. Can facilitate the occlusion of the patient.

Generally, when the mandibular dental articulator 2 is attached to the external surface of the mandibular dentition (the external surface of the mandibular dentition is the crown portion of the lower teeth, specifically including the labial side, lingual side and occlusal surface of the mandibular dentition), the mandibular teeth accommodating groove 21 is generally closely attached to the mandibular teeth from one second molar to the other second molar, further specifically, the two ends of the mandibular teeth accommodating groove 21 are the lower left molar engaging portion corresponding to one second molar of the lower teeth and the lower right molar engaging portion corresponding to the other second molar of the lower teeth. The coating area of the mandibular occlusal plate 2 on the external surface of the mandibular dentition is 20-30%, 20-25%, 25-30% and the like of the total area of the external surface of the mandibular dentition. The groove body depth of the lower jaw tooth accommodating groove 21 is shallower than the groove body depth of the upper jaw tooth fixing groove 11, and the groove body depth of the lower jaw tooth accommodating groove 21 may be, for example, 2 to 4mm, 2 to 3mm, or 3 to 4mm or the like. Generally, the mandibular teeth receiving groove 21 is used to secure only the portion of the lower cusps. The mandibular teeth receiving groove may be continuous or discontinuous. The mandibular teeth occlusal plate 2 is horseshoe-shaped and is consistent with the position of the mandibular teeth of the patient, the shape of the occlusal surface cuspate and the shape of the incisal end, the mandibular teeth accommodating groove 21 is vertically spaced by 2mm to wrap the mandibular teeth, and the 2mm is the groove depth of the mandibular teeth accommodating groove 21. The upper teeth retaining groove 11 and the lower teeth accommodating groove 21 are independent of each other and are consistent with the positions and shapes of the upper teeth and the lower teeth of the patient.

The utility model provides an among the self-fixing individuation lower jaw keeps ware, as figure 1, upper jaw tooth cover retainer 1 and lower jaw tooth occlusal plate 2 are connected to interlock connecting portion 3. In particular, the occlusal connection 3 may extend from one side of the second molar to the other side of the second molar. In shape to conform to the shape of the contact surfaces of the maxillary dental cuff retainer 1 and the mandibular dental articulator 2. The width of the meshing connecting part 3 is 7-15 mm, 10-15 mm, 7-10 mm, 10-12 mm, or 12-15 mm and the like. The height of the occlusion connecting part 3 is 1-2 mm; 1-1.5 mm; or 1.5 to 2mm, etc. The height of the occlusion connecting part 3 is consistent with the height direction of the maxillary dental sheath retainer 1 and the mandibular dental articulator 2. The maxillary dental sheath retainer 1, the mandibular dental articulator 2 and the occlusal connecting portion 3 are integrally formed.

The utility model provides an among the self-fixing formula individuation lower jaw keeps the ware, the material that keeps the ware from fixing formula individuation lower jaw is transparent elastic resin. The transparency of the transparent elastic resin is 80-90%; 80-85%; or 85-90% of the total weight of the composition. The elastic modulus is 1 to 5Gpa, 1 to 3Gpa, or 3 to 5 Gpa. The elastic resin can well fix the maxillary tooth sleeve fixing area and the maxillary dentition, and is beautiful and comfortable to wear.

A fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for constructing a model of a self-fixating individualized lower jaw holder according to the first aspect of the present invention or the steps of the method for preparing a self-fixating individualized lower jaw holder according to the second aspect of the present invention.

The utility model discloses a fifth aspect provides an equipment, include: a processor and a memory for storing a computer program, the processor being adapted to execute the computer program stored by the memory to cause the apparatus to perform the steps of the method for constructing a model of a self-fixating individualized mandibular holder according to the first aspect of the invention or the steps of the method for preparing a self-fixating individualized mandibular holder according to the second aspect of the invention.

The self-fixing type lower jaw retainer is characterized in that the occlusion condition of a patient is recorded before an operation, a computer digital modeling design is carried out to design a lower jaw proper retaining position, design adjustment is carried out according to the occlusion relation of different stages of the patient, and different retainers are manufactured. Compared with the existing common mandibular position adjusting device: the mandible leading function appliance, the repositioning combined pad/protrusion combined pad, the Herbst appliance and the like have the advantages that:

1. the preparation is rapid, and the patient can wear the mask immediately after operation through direct processing of 3D printing;

2. the invisible material is transparent elastic resin, and is not attached with any metal accessories, so that the wearing is attractive and the comfort is good;

3. the retainer is integrally formed and easy to take off, the daily oral cavity cleaning of a patient is not influenced after long-term wearing, and teeth are protected from decayed teeth;

4. the retainer is light and convenient, and the daily language function of a patient is not influenced;

5. the computer is used for manufacturing the personalized tooth socket and the personalized bite plate according to the preoperative and postoperative occlusion conditions of the patient, the teeth are matched with the dental cusp fossa, the individual conditions of the patient can be fitted better, the stability is good, the foreign body sensation is reduced, and the wearing compliance of the patient is improved;

6. the acting force is born by the whole dentition, the stress is dispersed, and the individual teeth are protected.

The patient can wear the lower jaw retainer to fix the lower jaw at the proper position of the designed lower jaw of the computer by means of the upper jaw tooth sleeve and the bite plate, and the proper lower jaw position is designed and adjusted according to different rehabilitation stages of the patient, so that the effect of preventing the lower jaw from being retracted after the operation can be achieved.

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Example 1

1) For a patient with the opening degree less than 2cm before the operation, performing CT scanning before the operation, wherein the layer thickness is 0.625mm, and acquiring occlusion information;

2) and inputting the acquired occlusion information into a computer in a Dicom format, transmitting the information to an analysis processing end, and performing information integration and three-dimensional reconstruction by the analysis processing end through SurgiCase CMF5.0 software.

3) Meanwhile, the designer designs the maxillary tooth sleeve of the patient and the bite plate required by the postoperative lower jaw position adjustment required by the postoperative lower jaw movement training process, and the specific parameters are as follows: the wall thickness of the maxillary tooth cover fixing area is 0.6-0.8 mm, the width is 5-12 mm, and the height is 5-8 mm. The wall thickness of the lower jaw occlusal plate area is 2-4 mm, the width is 10-15 mm, and the height is 2 mm. The width of the occlusion connecting area is 10-15 mm, and the height is 1-2 mm. And transmitting the data to a computer output printing end, and carrying out 3D printing through transparent elastic resin to obtain the required self-fixing individualized lower jaw holder.

4) Use of the mandibular holder: the mandible holder can be used after 2 weeks of operation. According to the preoperative occlusion condition of a patient, the proper positions of the mandible can be reconstructed in a three-dimensional manner to design the positions of different lower concave grooves. The lower jaw retainer is fixed by the upper jaw dental sleeve, and the lower jaw teeth are occluded in the lower groove, so that the lower jaw is kept in the position set by the computer. A smaller reach (e.g. 2mm) holder may be initially selected for use. When a patient wears the lower jaw retainer, no obvious muscle stretch feeling exists, the autonomous lower jaw position reaches the retainer fixed position and can be transited to the retainer at the next lower jaw position, and the upper and lower jaw occlusion relation of the patient in a natural state reaches an ideal condition.

Wear time of mandibular holder: the garment can be worn continuously at night; can be used intermittently during the day according to the daily life condition of the patient. In the early stage of operation (within 3 months), the using time of the daily retainer is not less than 5 hours, the using time of each time is not less than 1 hour, and the retainer is continuously used at night.

Example 2

1) For the patients with the mouth opening degree exceeding 2cm before the operation, directly taking a dental model, and scanning the model to obtain occlusion relation data;

3) Meanwhile, a designer designs a self-fixing type individualized lower jaw retainer required by the postoperative lower jaw movement training process of a patient, and the specific parameters are as follows: the wall thickness of the maxillary tooth cover fixing area is 0.6-0.8 mm, the width is 5-12 mm, and the height is 5-10 mm. The wall thickness of the lower jaw occlusal plate area is 2-4 mm, the width is 10-15 mm, and the height is 3 mm. The width of the occlusion connecting area is 10-15 mm, and the height is 1-2 mm. And transmitting the data to a computer output printing end, and performing 3D printing through elastic resin to obtain the required self-fixing type individualized lower jaw holder.

The utility model discloses combine together the lower jaw dental occlusal splint of upper jaw dental sheath retaining member and laminating lower jaw tooth occlusal surface cusp nest, the patient is through wearing the lower jaw keeps ware is fixed in computer design lower jaw suitable position with the lower jaw with the help of upper jaw dental sheath retaining member and lower jaw dental occlusal splint, can reach the effect that the postoperative improved the lower jaw and shrank, has can realize from fixed, individualized, stable good, light comfortable, do not influence patient's language function's advantage.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A self-fixing type individualized lower jaw retainer is characterized by comprising a upper jaw dental sheath retaining piece (1) for fitting upper teeth and a lower jaw dental occlusal plate (2) for retaining a lower jaw, wherein the upper jaw dental sheath retaining piece (1) and the lower jaw dental occlusal plate (2) are connected through an occlusal connecting part (3); the upper jaw tooth sleeve fixing piece (1) comprises an upper jaw tooth fixing groove (11) corresponding to the upper jaw dentition; the lower jaw teeth accommodating groove (21) corresponding to the lower jaw dentition is formed in the bottom of the lower jaw teeth occlusal plate (2), the coating area of the upper jaw dentition outer surface by the upper jaw teeth cover retaining piece (1) is 80-90% of the total area of the upper jaw dentition outer surface, and the depth of the upper jaw teeth retaining groove (11) is 4-9 mm; the coating area of the lower jaw occlusal plate (2) on the outer surface of the lower jaw dentition is 20-30% of the total area of the outer surface of the lower jaw dentition, the depth of the lower jaw teeth accommodating groove (21) is 2-4 mm, when the upper jaw teeth cover retaining piece (1) is attached to the outer surface of the upper jaw dentition, the upper jaw teeth cover retaining piece (1) extends from the second molar on one side to the second molar on the other side, and when the lower jaw teeth occlusal plate (2) is attached to the outer surface of the lower jaw dentition, the lower jaw teeth occlusal plate (2) extends from the second molar on one side to the second molar on the other side.

2. Self-fixating individualized mandibular holder according to claim 1, wherein the maxillary dental cuff holder (1) has a wall thickness of 0.6-0.8 mm.

3. Self-fixating individualized mandibular holder according to claim 1, wherein the width of the maxillary dental cuff holder (1) is 5-15 mm.

4. Self-fixating individualized mandibular holder according to claim 1, wherein the maxillary dental coping holder (1) has a height of 5-10 mm.

5. Self-fixating individualized mandibular holder according to claim 1, wherein the mandibular dental articulator (2) has a wall thickness of 2-4 mm.

6. Self-fixating individualized mandibular holder according to claim 1, wherein the width of the mandibular dental articulator (2) is 7-15 mm.

7. Self-fixating individualized mandibular holder according to claim 1, wherein the mandibular dental articulator (2) has a height of 2-4 mm.

8. Self-fixating individualized mandibular holder according to claim 1, wherein the width of the bite connection (3) is 7-15 mm.

9. Self-fixating individualized mandibular holder according to claim 1, wherein the height of the bite connection (3) is 1-2 mm.

10. The self-fixating individualized mandibular holder of claim 1, wherein the mandibular occlusal plate (2) covers from 25 to 30% of the total area of the mandibular dentition's outer surface.