Buffering retention elastic jaw pad
Through the structure and digitalization of double-layer soft and hard pressure diaphragm, buffer-retained elastic jaw pads are designed, which solves the problems of insufficient mechanical strength and personalization of existing jaw pads in patients with severe periodontitis, and achieves efficient and accurate The restoration of tooth fixation and chewing function improves tooth retention and ease of clinical operation.
Patent Information
- Application Number
- CN202420815896.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-18
AI Technical Summary
When treating patients with severe periodontitis, the existing jaw pads have insufficient or excessive mechanical strength, which leads to difficulty in shedding and removing, unable to achieve chewing function, and cannot personalize the sculpting shape, affecting the treatment effect.
Using a double-layer soft and hard pressure diaphragm structure, including hard and soft layers, a transparent hot press film is made through a combined hot pressing technology of negative and positive pressure. The inclined edge and dovetail-shaped window are designed, combined with digital intraoral scanning technology, accurate Match the patient's teeth morphology and form a buffer-retained elastic jaw pad.
It achieves efficient, accurate and personalized tooth fixation and chewing function recovery, reduces the risk of shedding, improves the patient's chewing function and teeth retention rate, and simplifies clinical operations.
Smart Images
Figure CN222172351U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of periodontology, and specifically relates to a buffering and retaining elastic jaw pad; it is mainly suitable for assisting the basic treatment and surgical treatment of loose teeth of patients with severe periodontitis in stage III or IV, and plays the role of loose tooth fixing splint, transitional repair and occlusal reconstruction. It is suitable for patients with nocturnal bruxism, and is also suitable for prosthodontics, orthodontics and oral and maxillofacial surgery (temporomandibular joint department). Background Art
[0002] The treatment of patients with severe periodontitis is an important part of periodontal treatment. Clinically, patients with severe periodontitis in stage III or IV have severe alveolar bone resorption, often accompanied by clinical manifestations such as tooth loosening of degree II or above, tooth displacement and occlusal trauma, which affect the patient's chewing function. If not controlled, it will lead to rapid tooth loss. In the treatment of loose teeth, consideration should be given to stabilizing the affected teeth as soon as possible and dispersing them. The fixation of loose teeth is often treated with resin splints, but they have the disadvantages of easy breakage, complicated chairside treatment steps and long operation time.
[0003] At present, jaw splints are mostly used to treat patients with temporomandibular joint disorders, bruxism and occlusal reconstruction, but are rarely used to treat patients with periodontitis. In current clinical practice, jaw splints are used to eliminate harmful occlusal contact; separate the occlusal contact between the upper and lower teeth, thereby avoiding premature contact with the non-working side. Interference, has the advantage of easy cleaning. In terms of the selection of lamination materials, ethylene-vinyl acetate copolymer (EVA) material is relatively soft and easy for patients to wear and take off, but the mechanical strength is too low, it is easy to fall off and cannot achieve the chewing function. The thickness is about 2mm, and it is impossible to carve the cusp shape of the jaw pad. On the contrary, the overly hard polyethylene terephthalate (PET) material has an adverse effect on loose teeth and is difficult to wear and take off. Therefore, finding a jaw pad material with suitable hardness and softness is an urgent problem to be solved. Utility Model Content
[0004] In view of the problems existing in the prior art, the utility model proposes a buffering and retaining elastic jaw pad to achieve efficient, accurate and personalized treatment for patients with severe periodontitis.
[0005] In view of this, the utility model provides a buffering and retaining elastic jaw pad, which is wrapped around the outer surface of the patient's teeth, and includes a double-layer soft and hard pressing membrane, a protrusion arranged on the double-layer soft and hard pressing membrane, and a dovetail-shaped window arranged at the rear end of the double-layer soft and hard pressing membrane;
[0006] The double-layer hard-soft pressed film comprises a hard layer and a soft layer, wherein the hard layer is the outer layer of the double-layer hard-soft pressed film, and the soft layer is the inner layer of the double-layer hard-soft pressed film;
[0007] The protrusion, dovetail-shaped window opening and double-layer soft and hard pressed membrane are integrally formed;
[0008] The side of the buffer-retaining elastic jaw pad close to the gingival margin of the patient's tooth neck is the jaw pad edge, and the jaw pad edge is an inclined surface with an inclination angle of 30°.
[0009] The number of the dovetail-shaped windows is 2, which are respectively arranged at the two side tail ends of the double-layer soft and hard pressed membrane. The width of each dovetail-shaped window is 2mm-3mm, and the length of each dovetail-shaped window is 4mm-6mm.
[0010] The number of the protrusions is two, which are respectively arranged on the outside of the two side tail ends of the double-layer soft and hard pressure membrane, and the distance between each protrusion and the gum margin of the patient's tooth neck is 1.0mm-2.0mm.
[0011] The distance between the edge of the jaw pad and the gingival margin of the patient's tooth neck is 1 mm.
[0012] The thickness of the buffering and retaining elastic jaw pad is 1.2mm-1.5mm.
[0013] The buffering and retaining elastic jaw pad is a transparent hot-pressed film that is hot-pressed by combining negative pressure and positive pressure.
[0014] The hard layer is made of polyethylene terephthalate-1,4-cyclohexanedimethanol material; and the soft layer is made of thermoplastic polyurethane material.
[0015] The shape of the inner side of the buffering and retaining elastic jaw pad is the same as the outer surface shape of the occlusal surface after buffering and filling the undercuts by scanning the digital dentition model obtained by scanning the patient's teeth with digital intraoral scanning software.
[0016] The protrusion corresponds to the retention attachment on the outer surface of the occlusal surface after buffering and filling the undercut on the digital dentition model, and the angle between the protrusion and the retention attachment is 15°; the angle between the tangent line of the cutting end of the retention attachment and the long axis of the tooth is 45°, and the angle between the gingival end of the retention attachment and the perpendicular line of the long axis of the tooth is 15°.
[0017] The buffer-retaining elastic jaw pad fits the highest point of the shape of the inclined teeth after buffering and filling the undercut on the corresponding digital dental arch model; the height of the buffer-retaining elastic jaw pad at the missing tooth after buffering and filling the undercut on the digital dental arch model does not exceed the height of the buffer-retaining elastic jaw pad of the adjacent teeth.
[0018] The beneficial effects of the utility model are:
[0019] 1. The buffering and retaining elastic jaw pad of the utility model includes a double-layer soft and hard pressed membrane, which is a double-layer structure of polyethylene terephthalate-1,4-cyclohexanedimethanol (PETG) combined with thermoplastic polyurethane (TPU). The thickness of the buffering and retaining elastic jaw pad after pressing is 1.2mm-1.5mm. The soft layer in contact with the teeth is soft and elastic, and the patient is comfortable to wear and easy to put on; the hard layer of the occlusal surface is hard and has good wear resistance. The double-layer soft and hard pressed membrane simulates the intraoral occlusal state through double jaw occlusion, so that the double-layer soft and hard pressed membrane has the same tooth cusp shape as the patient's teeth, improving the patient's chewing function.
[0020] 2. The utility model uses double-layer soft and hard pressed diaphragm materials combined with digital technology to make the buffer retention elastic jaw pad with high production accuracy, from electronic face bow to virtual Frame guide adjustment Individualized functional restoration and precise restoration are achieved.
[0021] 3. The protrusion on the buffering and retaining elastic jaw pad of the utility model corresponds to the retaining attachment on the outer surface of the occlusal surface after the digital dentition model is buffered and the undercut is filled, and the angle between the protrusion and the retaining attachment is 15°; the angle between the tangent line of the incisal end of the retaining attachment and the long axis of the tooth is 45°, and the angle between the gingival end of the retaining attachment and the vertical line of the long axis of the tooth is 15°, which effectively solves the problem that the buffering and retaining elastic jaw pad is easy to fall off during chewing, reduces the clinical oral operation time, and has strong process operability.
[0022] 4. The utility model provides dovetail-shaped windows at the tail ends of both sides of the buffer-retaining elastic jaw pad, with a width of 2mm-3mm and a length of 4mm-6mm, so as to facilitate patients to take it off and avoid large lateral forces during dislocation, thereby protecting loose teeth.
[0023] 5. The side of the buffering and retaining elastic jaw pad of the utility model close to the gingival margin of the patient's tooth neck is the jaw pad edge, and the jaw pad edge is an inclined surface with an inclination angle of 30°, which establishes an axial surface protrusion similar to that of natural teeth, can protect the gingival tissue and bone tissue from trauma and stimulation, and reduce iatrogenic periodontal disease.
[0024] 6. The jaw pad of the utility model avoids the displacement of loose teeth caused by periodontitis. The edge of the jaw pad does not touch the gums and is easy to wear and remove. It effectively fixes loose teeth, helps periodontitis patients to restore chewing function early, improves the retention rate of loose teeth of patients, and thus promotes overall health. It has good social value and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a top view schematic diagram of the buffering and retaining elastic jaw pad structure of the utility model;
[0026] Figure 2It is a partial schematic diagram of the buffering and retaining elastic jaw pad AA of the utility model;
[0027] Figure 3 It is a partial schematic diagram of the buffering and retaining elastic jaw pad BB of the utility model;
[0028] Figure 4 It is a side view schematic diagram of the buffering and retaining elastic jaw pad of the utility model;
[0029] Figure 5 This is the front view of the digital dentition model of the present invention after buffering and undercut filling;
[0030] Figure 6 This is a front view of the digital dentition model of the utility model after buffering and filling the undercut;
[0031] Figure 7 A flow chart for making a buffer-retaining elastic jaw pad of the utility model;
[0032] In the figure, 11, patient's teeth; 12, gingival margin at the neck of the tooth; 21, double-layer hard and soft compression membrane; 211, hard layer; 212, soft layer; 22, protrusion; 23, dovetail window; 24, jaw pad edge; 31, retention attachment; d, protruding height of the retention attachment. DETAILED DESCRIPTION
[0033] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] like Figure 1-4 As shown, the utility model is a buffering and retaining elastic jaw pad, which is wrapped around the outer surface of the patient's tooth 11, including a double-layer soft and hard pressing membrane 21 that surrounds the occlusal surface and the buccal and lingual side of the tooth, a protrusion 22 provided on the double-layer soft and hard pressing membrane 21, and a dovetail-shaped window 23 provided at the rear end of the double-layer soft and hard pressing membrane 21. The protrusion 22, the dovetail-shaped window 23 and the double-layer soft and hard pressing membrane 21 are integrally formed and used to fix and disperse loose teeth. It helps periodontitis patients recover their chewing function early and improves the retention rate of their loose teeth.
[0035] The double-layer hard-soft pressed membrane 21 includes a hard layer 211 and a soft layer 212. The hard layer 211 is the outer layer of the double-layer hard-soft pressed membrane 21 and is made of polyethylene terephthalate-1,4-cyclohexanedimethanol (PETG) material with good wear resistance. The soft layer 212 is the inner layer of the double-layer hard-soft pressed membrane 21 and is in contact with the patient's teeth 11. It is made of thermoplastic polyurethane (TPU) material and is elastic, making it comfortable for the patient to wear and easy to put on and take off.
[0036] The buffer-retaining elastic jaw pad is a transparent hot-pressed film that is pressed by negative pressure and positive pressure. The shape of the inner side of the buffer-retaining elastic jaw pad is the same as the outer surface shape of the occlusal surface after buffering and filling the undercut by scanning the digital dentition model of the patient's teeth 11 using digital intraoral scanning software, such as Figure 5 As shown, the digital dentition model is produced by scanning the patient's teeth 11 using digital intraoral scanning software to obtain the patient's in vitro dental arch three-dimensional data, such as Figure 6 As shown, the digital dentition model is buffered and filled with undercuts, and a retaining attachment 31 is arranged on the buccal surface of the digital dentition model, and the retaining attachment 31 corresponds to the protrusion 22 of the buffering and retaining elastic jaw pad. The position of the retaining attachment 31 is preferentially considered according to the situation of missing teeth or loose teeth, and the arrangement position includes the tail teeth, premolars or molars on the digital dentition model; the angle between the incisal tangent of the retaining attachment 31 and the long axis of the tooth is 45°, the angle between the gingival end of the retaining attachment 31 and the vertical line of the long axis of the tooth is 15°, and the protruding height d of the retaining attachment is 2mm-3mm; the digital dentition model and the retaining attachment 31 are three-dimensionally printed, and the buffering and retaining elastic jaw pad is made by combining negative pressure and positive pressure by heating the diaphragm under vacuum or pressurized conditions and then covering the digital dentition model and the retaining attachment 31. The thickness of the buffering and retaining elastic jaw pad before lamination is 2mm, and the thickness of the buffering and retaining elastic jaw pad after lamination is 1.2mm-1.5mm. Preferably, the digital intraoral scanning software used is 3shape Dental System software, which is a leading CAD / CAM software for dental denture design and manufacturing.
[0037] When there are tilted teeth in the patient's teeth 11, the buffer-retaining elastic jaw pad fits the highest point of the tilted teeth after buffering and filling the undercuts in the corresponding digital dentition model; when there are missing teeth in the patient's teeth 11, the height of the missing teeth does not exceed the height of the buffer-retaining elastic jaw pad of the adjacent teeth after buffering and filling the undercuts in the digital dentition model, and a 1mm gap is reserved with the opposing teeth during occlusion, and the buffer-retaining elastic jaw pad at the missing teeth is used to restore the shape of the missing teeth. The buffer-retaining elastic jaw pad simulates the intraoral occlusion state through double-jaw occlusion, so that the double-layer soft and hard pressure membrane 21 has the same tooth cusp shape as the patient's teeth 11, so that the patient can improve the chewing function after wearing the buffer-retaining elastic jaw pad.
[0038] There are two protrusions 22, which are respectively arranged on both sides of the buffering and retaining elastic jaw pad. Figure 3As shown, the distance between each protrusion 22 and the gingival margin 12 of the neck of the patient's teeth is 1.0mm-2.0mm. The position of the protrusion 22 is arranged according to the missing teeth 11 of the patient or the looseness of the teeth. Preferably, after the patient wears the buffer-retaining elastic jaw pad, the protrusions 22 are respectively located in the middle of the buccal side of the bilateral molars of the patient's teeth 11. The protrusion 22 corresponds to the retaining attachment 31 on the outer surface of the occlusal surface after the digital dentition model is buffered and filled with undercuts. The angle between the protrusion 22 and the retaining attachment 31 is 15°. The protrusion 22 and the retaining attachment 31 are used to stabilize the buffer-retaining elastic jaw pad, so that after the patient wears the buffer-retaining elastic jaw pad, the buffer-retaining elastic jaw pad is not easy to fall off during chewing.
[0039] Two dovetail windows 23 are respectively opened at the two side tail ends of the double-layer soft and hard pressure membrane 21. The width of the dovetail windows 23 is 2mm-3mm and the length is 4mm-6mm, which is easy for patients to take off and put on, avoiding large lateral force during dislocation, thereby protecting loose teeth.
[0040] like Figure 2 As shown, the side of the buffer-retaining elastic jaw pad close to the gingival margin 12 of the patient's tooth neck is the jaw pad edge 24, and the jaw pad edge 24 is an inclined surface with an inclination angle of 30°, that is, the angle between the outer inclined surface of the jaw pad edge 24 and the inner plane of the soft layer 212 is 30°; the distance between the jaw pad edge 24 and the gingival margin 12 of the tooth neck is 1 mm, and the jaw pad edge 24 is refined by polishing technology so that the jaw pad edge 24 does not contact the gingival margin 12 of the tooth neck, thereby realizing personalized production of the buffer-retaining elastic jaw pad, establishing an axial surface protrusion similar to that of natural teeth, protecting the gums and bone tissues from trauma and stimulation, and reducing iatrogenic periodontal diseases.
[0041] like Figure 7 As shown, the manufacturing steps of the above-mentioned buffering and retaining elastic jaw pad are as follows:
[0042] Step 1: Assess the patient's periodontal condition, jaw position and stomatognathic system function, and perform facial and maxillomandibular examination, temporomandibular joint examination, central jaw position examination, occlusal relationship examination and intraoral examination.
[0043] Step 2: Use the electronic face bow to obtain the mandibular movement trajectory, perform a digital intraoral scan, and obtain the digital dental model and bite record data.
[0044] Step 3: Use digital intraoral scanning technology software to make retention attachments 31 on the digital dental arch model on the side with the jaw pad, and three-dimensionally print the digital dental arch model, such as Figure 3 As shown, the design of the retaining attachment 31 does not affect the difficulty of wearing the buffer-retaining elastic jaw pad, while increasing the retaining force of the buffer-retaining elastic jaw pad; the tooth gaps of the digital dentition model are buffered and filled with undercuts on the digital intraoral scanning technology software, as shown in FIG. Figure 5 and Figure 6 As shown, this effect prevents the double-layer molding material from entering the concave area, affecting the removal of the jaw pad and having an adverse effect on the loose teeth, and 3D printing the digital dentition model.
[0045] Step 4: Using negative pressure and positive pressure to heat the double-layer soft and hard pressing film 21 to 170°C under vacuum or pressure to cover the digital dental model to form a transparent hot pressing film, and then use the digital dental model printed on the opposite jaw to The frame is pressed on the diaphragm, and the occlusal relationship is accurately completed. After the film is pressed, the double-layer soft and hard pressed diaphragm 21 has a jaw pad with a thickness of 1.2mm-1.5mm.
[0046] Step 5: Virtual Teeth Analyze the high point of bite after wearing the jaw pad and guide the adjustment Make the upper and lower teeth achieve uniform contact during movement.
[0047] Step 6: Adjust the personalized jaw pad edge 24 so that the jaw pad edge 24 does not touch the patient's gums and is about 1 mm away from the gum margin 12 of the patient's tooth neck, and then polish, clean, dry and disinfect.
[0048] Step 7: Try on and bond the attachment 31 in the mouth, and adjust the buffer-retaining elastic jaw pad.
[0049] Step 8: Instruct the patient to wear the buffer-retaining elastic jaw pad in sequence, and inform the patient of the care methods of the buffer-retaining elastic jaw pad.
[0050] Step 9: Periodontal specialist review.
Claims
1. A buffering and retaining elastic jaw pad wrapped around the outer surface of the patient's teeth, characterized in that: It includes a double-layer soft and hard pressed membrane, a protrusion arranged on the double-layer soft and hard pressed membrane, and a dovetail-shaped window arranged at the rear end of the double-layer soft and hard pressed membrane; The double-layer hard-soft pressed film comprises a hard layer and a soft layer, wherein the hard layer is the outer layer of the double-layer hard-soft pressed film, and the soft layer is the inner layer of the double-layer hard-soft pressed film; The protrusion, dovetail-shaped window opening and double-layer soft and hard pressed membrane are integrally formed; The side of the buffer-retaining elastic jaw pad close to the gingival margin of the patient's tooth neck is the jaw pad edge, and the jaw pad edge is an inclined surface with an inclination angle of 30°.
2. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The number of the dovetail-shaped windows is 2, which are respectively arranged at the two side tail ends of the double-layer soft and hard pressed membrane. The width of each dovetail-shaped window is 2mm-3mm, and the length of each dovetail-shaped window is 4mm-6mm.
3. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The number of the protrusions is two, which are respectively arranged on the outside of the two side tail ends of the double-layer soft and hard pressure membrane, and the distance between each protrusion and the gum margin of the patient's tooth neck is 1.0mm-2.0mm.
4. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The distance between the edge of the jaw pad and the gingival margin of the patient's tooth neck is 1 mm.
5. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The thickness of the buffering and retaining elastic jaw pad is 1.2mm-1.5mm.
6. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The buffering and retaining elastic jaw pad is a transparent hot-pressed film that is hot-pressed by combining negative pressure and positive pressure.
7. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The hard layer is made of polyethylene terephthalate-1,4-cyclohexanedimethanol material; and the soft layer is made of thermoplastic polyurethane material.
8. The buffering and retaining elastic jaw pad according to claim 1, characterized in that: The shape of the inner side of the buffering and retaining elastic jaw pad is the same as the outer surface shape of the occlusal surface after buffering and filling the undercuts by scanning the digital dentition model obtained by scanning the patient's teeth with digital intraoral scanning software.
9. The buffering and retaining elastic jaw pad according to claim 8, characterized in that: The protrusion corresponds to the retention attachment on the outer surface of the occlusal surface after buffering and filling the undercut on the digital dentition model, and the angle between the protrusion and the retention attachment is 15°; the angle between the tangent line of the cutting end of the retention attachment and the long axis of the tooth is 45°, and the angle between the gingival end of the retention attachment and the perpendicular line of the long axis of the tooth is 15°.
10. The buffer-retaining elastic jaw pad according to claim 8, characterized in that: The buffer-retaining elastic jaw pad fits the highest point of the shape of the inclined teeth after buffering and filling the undercut on the corresponding digital dental arch model; the height of the buffer-retaining elastic jaw pad at the missing tooth after buffering and filling the undercut on the digital dental arch model does not exceed the height of the buffer-retaining elastic jaw pad of the adjacent teeth.