Function correction occlusal pad used after temporomandibular joint disc reposition
By designing an adjustable temporomandibular joint disc reduction pad, the problem that the existing pad cannot effectively guide the position of the mandible is solved, the gradual adjustment of the mandible and the regeneration of new bone in the condyle are achieved, and the treatment effect of mandibular retraction and deviation is improved.
Patent Information
- Application Number
- CN202422628218.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Existing repositioning pads cannot effectively guide the mandible to the correct position after temporomandibular joint disc reduction surgery, resulting in limited treatment effects. Adjustable orthodontic appliances may cause lower molar intrusion, increasing the difficulty of secondary treatment.
A repositioning splint that can gradually move the mandible forward or laterally is designed. Combined with the upper dentition splint, the mandible can be gradually adjusted through fixed components and advancement components to promote new bone formation in the condyle and improve mandibular retraction and deviation.
It can be worn after disc reduction surgery. It gradually adjusts the mandibular position, improves mandibular retraction and deviation, promotes condylar bone regeneration, improves treatment results, and reduces the difficulty of secondary correction.
Smart Images
Figure CN223380652U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a functional correction pad after temporomandibular joint disc reduction surgery, belonging to the technical field of oral medical instruments. Background Art
[0002] The temporomandibular joint (TMJ) is the only bilateral joint in the maxillofacial region, responsible for daily movements such as mouth opening and closing, mandibular protrusion, retraction, and lateralization, as well as chewing. Anterior disc displacement (ADD) of the TMJ is a common oral and maxillofacial condition, with an incidence rate as high as 30% to 40%. The main clinical manifestations include joint clicking, creaking, pain with movement, and limited mouth opening. As early as 1996, researchers discovered that ADD is closely associated with condylar resorption. The condyle is the growth center of the mandible, and condylar growth determines the height of the mandibular ramus. For adolescents and young adults (≤30 years of age), the greatest risk of anterior disc displacement is stagnation of condylar growth or even condylar resorption, leading to maxillofacial deformities. Among adolescents (aged 10-20 years) with ADD in eastern China, the incidence of condylar resorption is approximately 67.6%. When the lesion affects one side, it can cause asymmetric growth and development of the mandible; when both sides are affected, it can manifest as decreased height of the mandibular ascending ramus, clockwise rotation of the mandible, mandibular retraction, progressive opening and closing of the anterior teeth, etc., seriously affecting facial aesthetics and the function of the stomatognathic system.
[0003] The current repositioning pads are made after recording the patient's occlusal relationship and cannot be adjusted after production. After arthroscopic surgery, the patient's mandibular movement is limited and the mandible cannot be moved forward or laterally to the normal position. Obtaining a occlusal record and making a repositioning pad in this position cannot completely guide the mandible to the correct position, so the therapeutic effect of the pad is limited. There is also an adjustable double-pad appliance on the market. The advancement module is made of stainless steel and embedded in the pad of the upper dentition. By rotating the screws, the effect of gradually moving the metal module forward can be achieved. However, this appliance also has problems: the pad of the upper dentition cannot be adjusted, making it impossible for the lower molars to extend. Long-term wearing of the pad can cause the lower molars to be further depressed, deepen the mandibular Spee curve, and increase the difficulty of secondary correction.
[0004] In order to solve the above problems, the present application proposes a repositioning pad that can gradually move the mandible forward or laterally to gradually promote new bone formation in the condyle, ultimately achieving the purpose of improving mandibular retraction and deviation. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a functional correction pad after temporomandibular joint disc reduction surgery, which can gradually move the mandible forward or laterally, and the upper dentition pad can be adjusted at each follow-up visit, so that ADD patients can wear it 1-2 days after temporomandibular joint disc reduction surgery under arthroscopy, gradually move the mandible forward or laterally, and at the same time establish an occlusal relationship with the posterior teeth to improve mandibular retrusion and mandibular deviation.
[0006] To achieve the above technical objectives and effects, this application is implemented through the following technical solutions:
[0007] A functional correction pad after temporomandibular joint disc reduction surgery, comprising an upper pad and a lower pad, wherein the upper pad covers the maxillary first permanent molar, the maxillary first premolar and the maxillary second premolar, and forms an inclined surface at a 70° angle to the mesial of the maxillary first premolar; the lower pad is fixed to the mandibular lingual side of the oral cavity by a fixing component 1, and on the condylar absorption side, the lower pad covers a part of the area from the canine region to the maxillary first premolar, and forms an inclined surface at a 70° angle to the distal of the occlusal plane at a position in contact with the upper pad, and the contact position of the upper pad and the lower pad forms an inclined surface at a 70° angle to the occlusal plane at an upper front, lower back and lower posterior angle; on the normal condylar side, the lower pad forms an inclined surface at a 70° angle to the distal of the occlusal plane at a distal marginal ridge of the mandibular first premolar, and the contact position of the upper pad and the lower pad forms an inclined surface at a 70° angle to the occlusal plane at an upper front, lower back and lower posterior angle;
[0008] The upper occlusal pad includes an upper jaw fixed occlusal pad and an upper jaw advancement occlusal pad. The upper jaw fixed occlusal pad is fixed to the upper jaw of the oral cavity by a second fixing component. The upper jaw advancement occlusal pad is slidably arranged in the oral cavity. The front end of the upper jaw advancement occlusal pad is pressed against the rear end surface of the lower occlusal pad. At least one group of advancement components for sliding adjustment of the upper jaw advancement occlusal pad is arranged between the upper jaw fixed occlusal pad and the upper jaw advancement occlusal pad.
[0009] Preferably, the advancement assembly includes a sleeve 1, an adjusting screw, a rotary adjuster, a sleeve 2 and a base. The sleeve 1 is embedded in the outer side wall of the maxillary fixed pad and is provided with a threaded hole. The base is embedded in the maxillary advancement pad. The side of the maxillary advancement pad facing the maxillary fixed pad is fixedly connected to the sleeve 2 through the base. One end of the adjusting screw is threaded into the threaded hole, and the other end of the adjusting screw is fixedly connected to the sleeve 2. The rotary adjuster is coaxially sleeved and fixed on the outer wall of one end of the adjusting screw close to the sleeve 2. A plurality of adjustment holes are evenly distributed circumferentially on the outer wall of the rotary adjuster.
[0010] Furthermore, a shielding cover is hingedly provided on the same side of the sleeve 1 and the sleeve 2.
[0011] Furthermore, the maximum forward movement of the adjusting screw is 6 mm.
[0012] Furthermore, the maxillary advancement pad moves forward by 0.1 mm every time the rotary adjuster rotates 1 / 4 of a circle.
[0013] Furthermore, at least one guide rod is provided on a side wall of the second sleeve facing the first sleeve, and the guide rod passes through the first sleeve.
[0014] Preferably, the second fixing component includes an interproximal hook 1, an interproximal hook 2 and an upper lip bow, four of the interproximal hooks 1 are provided and are respectively arranged on the inner walls of the rear parts of both sides of the maxillary fixed pad to be clamped and fixed on both sides of the maxillary first permanent molar, two of the interproximal hooks 2 are provided and are respectively arranged on both sides of the maxillary fixed pad, the interproximal hook 2 has a spherical end and is located between the maxillary first premolar and the maxillary second premolar, for increasing retention, and the upper lip bow is provided on the front side of the maxillary fixed pad to be clamped and fixed on the upper lateral incisor, upper central incisor and upper canine, for controlling the labiolingual tilting movement of the maxillary anterior teeth.
[0015] Preferably, the fixing component 1 includes a modified arrow card 1 and interproximal hooks 3, the modified arrow card 1 is provided with two and is respectively arranged on the rear parts of both sides of the lower pad to be clamped and fixed on the mandibular canines, and the interproximal hooks 3 are provided with three and are respectively arranged on the front side of the lower pad to be clamped and fixed on the lower central incisor and the lower lateral incisor.
[0016] Preferably, the forward moving components are symmetrically arranged in two groups.
[0017] The utility model provides a functional correction pad after temporomandibular joint disc reduction surgery, which has the following advantages:
[0018] This new functional correction splint for temporomandibular joint disc reduction surgery is custom-made for arthroscopic disc reduction surgery. Its integrated structure maintains the condyle's position in the temporomandibular joint fossa after disc reduction. Simultaneously, by adjusting the screw, the mandible is gradually advanced, promoting condylar remodeling and new bone regeneration, effectively improving mandibular retraction or deviation. This splint promotes condylar remodeling to achieve personalized treatment for temporomandibular joint disorders and their subsequent dentofacial deformities. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the upper pad structure of a functional correction pad after temporomandibular joint disc reduction surgery according to the present invention;
[0020] Figure 2 This is a schematic diagram of the structure of the lower occlusal pad of the utility model for functional correction of temporomandibular joint disc reduction surgery;
[0021] Figure 3 This is a schematic structural diagram of a functional correction pad after temporomandibular joint disc reduction surgery according to the present invention;
[0022] Figure 4 This is a schematic diagram of the structure of the forward moving component of the present invention Figure 1 ;
[0023] Figure 5 This is a schematic diagram of the structure of the forward moving component of the present invention Figure 2 ;
[0024] In the picture:
[0025] 1-upper occlusal pad; 11-maxillary fixed occlusal pad; 12-maxillary advancement occlusal pad; 2-lower occlusal pad; 3 advancement assembly; 31-sleeve one; 32-adjusting screw; 321-widening part; 33 rotary adjuster; 331-adjusting hole; 34-sleeve two; 35-base; 4-guide rod; 5-fixation assembly two; 51-interproximal hook one; 52-interproximal hook two; 53 upper labial bow; 6-fixation assembly one; 61-modified arrowhead card one; 62-interproximal hook three; 7-maxillary first permanent molar; 8-maxillary first premolar; 9-maxillary second premolar; 10-upper lateral incisor; 13-upper central incisor; 14-upper canine; 15-mandibular first premolar; 16-mandibular central incisor; 17-mandibular lateral incisor; 18-shielding cover; 19-mandibular canine. DETAILED DESCRIPTION
[0026] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this utility model, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts are within the scope of protection of this utility model.
[0027] Reference Figure 1-Figure 3 , a functional correction pad after temporomandibular joint disc reduction surgery, including an upper pad 1 and a lower pad 2, the upper pad 1 covers the maxillary first permanent molar 7, the maxillary second permanent molar and the maxillary first premolar 8, the maxillary second premolar 9, and forms an inclined surface at a 70° angle to the mesial plane at the mesial marginal ridge of the maxillary first premolar 8; the lower pad 2 is fixed to the lingual side of the mandible in the oral cavity through a fixing component 6. During actual use, the jaw position record of the patient after joint disc reduction surgery is completed by occlusal wax. On the condylar absorption side, the lower pad 2 covers the canine area to the maxillary A partial area of the first premolar 8 forms a distal bevel at an angle of 70° to the occlusal plane at the contact point with the upper pad 1, and a contact point between the upper pad 1 and the lower pad 2 forms a bevel at an angle of 70° to the occlusal plane from top to bottom, so that the upper and lower parts of the orthodontic appliance are locked with each other, guiding and maintaining the mandible in a protrusive position; on the normal side of the condyle, the lower pad 2 forms a distal bevel at an angle of 70° to the occlusal plane at the distal marginal ridge of the mandibular first premolar 15, and the ....
[0028] Reference Figure 1-Figure 5 The upper occlusal pad 1 includes a maxillary fixed occlusal pad 11 and a maxillary advancement occlusal pad 12. The maxillary fixed occlusal pad 11 is fixed to the upper palate of the oral cavity by a fixing component 2 5. The maxillary advancement occlusal pad 12 is slidably installed in the oral cavity. The front end of the maxillary advancement occlusal pad 12 is pressed against the rear end surface of the lower occlusal pad 2. At least one group of advancement components 3 for sliding adjustment of the maxillary advancement occlusal pad 12 is installed between the maxillary fixed occlusal pad 11 and the maxillary advancement occlusal pad 12. Then, by gradually advancing the mandibular advancement of the maxillary advancement occlusal pad 12 and the lower occlusal pad 2, the condylar reconstruction and the regeneration of new bone are promoted, which can effectively improve the retraction or deviation of the mandible. During use, if the bilateral condyles are absorbed, one group of advancement components 3 is installed on each side of the maxillary fixed occlusal pad 11; if the unilateral condyle is absorbed, one group of advancement components 3 is installed on the absorbing side.
[0029] In a further embodiment, the advancement assembly 3 includes a sleeve 31, an adjusting screw 32, a rotary adjuster 33, a sleeve 34 and a base 35. The sleeve 31 is embedded in the outer wall of the maxillary fixed occlusal pad 11 and is provided with a threaded hole. The base 35 is embedded in the maxillary advancement occlusal pad 12. The maxillary advancement occlusal pad 12 is fixedly connected to the sleeve 34 on the side facing the maxillary fixed occlusal pad 11 through the base 35. One end of the adjusting screw 32 is screwed into the threaded hole of the sleeve 31, and the other end of the adjusting screw 32 is fixedly connected to the sleeve 34. Specifically, The end of the adjusting screw 32 connected to the second sleeve 34 is integrally formed with a short cylindrical widened portion 321, and the second sleeve 34 is provided with a recessed portion that is plugged and fixed to the widened portion 321. The rotary adjuster 33 is coaxially sleeved and fixed on the outer wall of the end of the adjusting screw 32 close to the second sleeve 34. A plurality of adjustment holes 331 are evenly distributed on the circumference of the outer wall of the rotary adjuster 33. When in use, an adjustment key that is plugged and adapted to the adjustment hole 331 is configured and produced. In this embodiment, the base 35 is preferably a metal mesh base 35, and there are preferably four adjustment holes 331.
[0030] Furthermore, a shielding cover 18 is hingedly installed on the same side of sleeve 1 31 and sleeve 2 34. The shielding cover 18 is preferably made of stainless steel. The shielding cover 18 can reduce the stimulation of the patient's buccal mucosa when the forward moving component 3 is located on the side of the upper pad 1. When adjustment is needed, the shielding cover 18 can be opened, which is convenient and quick.
[0031] Furthermore, the maximum forward movement of the adjusting screw 32 is 6 mm, and the maxillary advancement occlusal pad 12 moves forward 0.1 mm for every 1 / 4 turn of the rotary adjuster 33 .
[0032] Furthermore, at least one guide rod 4 is inserted and fixed on the side wall of the sleeve 2 34 facing the sleeve 1 31. The guide rod 4 passes through the sleeve 1 31. The guide rod 4 can improve the stability of the forward moving component 3 during adjustment, thereby improving the adjustment efficiency.
[0033] Reference Figure 1 and Figure 3 The fixing component 2 5 includes an interproximal hook 1 51, an interproximal hook 2 52 and an upper lip bow 53. Four interproximal hooks 1 51 are fixedly installed and are respectively arranged on the inner walls of the rear part of both sides of the maxillary fixed pad 11 to be clamped and fixed on both sides of the maxillary first permanent molar 7. Two interproximal hooks 2 52 are fixedly installed and are respectively arranged on both sides of the maxillary fixed pad 11. The interproximal hook 2 52 has a spherical end and is located between the maxillary first premolar 8 and the maxillary second premolar 9, which is used to increase retention. The upper lip bow 53 is fixedly installed on the front side of the maxillary fixed pad 11 to be clamped and fixed on the upper lateral incisor 10, the upper central incisor 13 and the upper canine 14, which is used to control the labiolingual tilting movement of the maxillary anterior teeth.
[0034] Reference Figure 2 and Figure 3 The fixing component 6 includes a modified arrow card 61 and an interproximal hook 3 62. Two improved arrow cards 61 are fixedly installed and are respectively arranged on the rear parts of both sides of the lower pad 2 to be clamped and fixed on the mandibular canines 19. Three interproximal hooks 3 62 are provided and fixedly installed on the front side of the lower pad 2 to be clamped and fixed on the lower central incisor 16 and the lower lateral incisor 17, effectively avoiding the occurrence of jaw deformity caused by lip tilt of the upper anterior teeth. In this embodiment, the lower pad 2 adopts the lower dentition part of a conventional double pad orthodontic appliance, which is a prior art and will not be described in detail.
[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be considered as the scope of protection of the present invention. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the present invention, which are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A functional correction pad after temporomandibular joint disc reduction surgery, characterized in that: The invention comprises an upper occlusal pad (1) and a lower occlusal pad (2), wherein the upper occlusal pad (1) covers the maxillary first permanent molar (7), the maxillary first premolar (8), and the maxillary second premolar (9), and forms an inclined surface at a 70° angle to the mesial plane at the mesial marginal ridge of the maxillary first premolar (8); the lower occlusal pad (2) is fixed on the mandibular lingual side of the oral cavity through a fixing component (6), and on the condylar absorption side, the lower occlusal pad (2) covers the area from the canine region to the maxillary first premolar (8). The area is divided into two parts, the part contacting the upper closure pad (1) forms an inclined surface with an angle of 70° to the distal end of the occlusal plane, and the part contacting the upper closure pad (1) and the lower closure pad (2) forms an inclined surface with an angle of 70° to the occlusal plane at the top, front, bottom and back; on the normal side of the condyle, the lower closure pad (2) forms an inclined surface with an angle of 70° to the distal end of the occlusal plane at the distal marginal ridge of the mandibular first premolar (15), and the part contacting the upper closure pad (1) and the lower closure pad (2) forms an inclined surface with an angle of 70° to the distal end of the occlusal plane; The upper occlusal pad (1) comprises an upper jaw fixed occlusal pad (11) and an upper jaw advancement occlusal pad (12), wherein the upper jaw fixed occlusal pad (11) is fixed to the upper jaw of the oral cavity by a second fixing component (5), and the upper jaw advancement occlusal pad (12) is slidably arranged in the oral cavity, and the front end of the upper jaw advancement occlusal pad (12) is pressed against the rear end surface of the lower occlusal pad (2), and at least one group of advancement components (3) for slidingly adjusting the upper jaw advancement occlusal pad (12) is arranged between the upper jaw fixed occlusal pad (11) and the upper jaw advancement occlusal pad (12).
2. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 1, characterized in that: The advancement assembly (3) comprises a sleeve (31), an adjusting screw (32), a rotary adjuster (33), a sleeve (34) and a base (35). The sleeve (31) is embedded in the outer wall of the maxillary fixed pad (11) and is provided with a threaded hole. The base (35) is embedded in the maxillary advancement pad (12). The side of the maxillary advancement pad (12) facing the maxillary fixed pad (11) is fixedly connected to the sleeve (34) through the base (35). One end of the adjusting screw (32) is screwed into the threaded hole, and the other end of the adjusting screw (32) is fixedly connected to the sleeve (34). The rotary adjuster (33) is coaxially sleeved and fixed on the outer wall of one end of the adjusting screw (32) close to the sleeve (34). A plurality of adjustment holes (331) are evenly distributed on the outer wall of the rotary adjuster (33).
3. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 2, characterized in that: The first sleeve (31) and the second sleeve (34) are hingedly provided with a shielding cover (18) on the same side.
4. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 2, characterized in that: The maximum forward displacement of the adjusting screw (32) is 6 mm.
5. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 2, characterized in that: Every time the rotary regulator (33) rotates 1 / 4 of a turn, the maxillary advancement pad (12) moves forward by 0.1 mm.
6. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 2, characterized in that: At least one guide rod (4) is provided on a side wall of the second sleeve (34) facing the first sleeve (31), and the guide rod (4) passes through the first sleeve (31).
7. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 1, characterized in that: The fixing component 2 (5) includes an interproximal hook 1 (51), an interproximal hook 2 (52) and an upper labial arch (53). The interproximal hook 1 (51) is provided with four and is separately arranged on the inner wall of the rear part of both sides of the maxillary fixed pad (11) to be clamped and fixed on both sides of the maxillary first permanent molar (7). The interproximal hook 2 (52) is provided with two and is separately arranged on both sides of the maxillary fixed pad (11). The interproximal hook 2 (52) has a spherical end and is located between the maxillary first premolar (8) and the maxillary second premolar (9) for increasing retention. The upper labial arch (53) is provided on the front side of the maxillary fixed pad (11) to be clamped and fixed on the upper lateral incisor (10), the upper central incisor (13) and the upper canine (14) for controlling the labial and lingual tilting movement of the maxillary anterior teeth.
8. The functional correction pad after temporomandibular joint disc reduction surgery according to claim 1, characterized in that: The fixing component (6) includes a modified arrowhead clip (61) and an interproximal hook (62). Two of the modified arrowhead clips (61) are provided and are respectively arranged at the rear parts of both sides of the lower occlusal pad (2) to be clamped and fixed on the mandibular canine (19). Three of the interproximal hooks (62) are provided and are respectively arranged at the front side of the lower occlusal pad (2) to be clamped and fixed on the lower central incisor (16) and the lower lateral incisor (17).
9. The functional correction splint after temporomandibular joint disc reduction surgery according to claim 1, characterized in that: The forward moving components (3) are symmetrically arranged in two groups.