Personalized clamp for mandibular movement recording device
The personalized design of the mandibular movement recording device fixture solves the problem of insufficient adaptability of the fixture in the existing technology, and achieves stable fixation of different mandibular tooth morphologies and accurate digital recording.
Patent Information
- Application Number
- CN202421976407.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The ready-made fixtures of existing mandibular movement recording devices cannot adapt to subjects with limited anterior dental arch space or mandibular teeth that are too short or have complex morphologies, resulting in the inability to engage in normal occlusion or perform digital recording.
A personalized fixture was designed, including an intraoral adhesive device and a fixator. A digital model was obtained through intraoral scanning, and the fixture was made using 3D printing to ensure that the fixture was compatible with the mandibular teeth. An overflow groove and a magnetic seat were set in the fixture to stabilize the sensor and avoid occlusal interference.
It achieves adaptive fixation for different mandibular tooth morphologies, ensures that subjects with deep overbite do not experience interference during occlusion, and improves the accuracy and feasibility of digital recording.
Smart Images
Figure CN223365542U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dental instruments, in particular to a personalized clamp for mandibular movement recording equipment. Background Art
[0002] Mandibular movement is a complex three-dimensional movement, led by the central nervous system and completed with the cooperation of the masticatory muscles, occlusion, and temporomandibular joint. For example, swallowing, chewing, and speech are all functional movements of the mandible. Studying mandibular movement and understanding the patterns and characteristics of mandibular movement during various functions of the stomatognathic system can not only obtain the overall status and physiological characteristics of the stomatognathic system, but also evaluate the efficacy of oral-related diseases. In recent years, mandibular movement recording equipment has evolved from graphic and mechanical recording to electronic recording through optical or ultrasonic sensors. The sensor is connected to the subject's mandibular dental arch through a clamp. The test subject follows the instructions to complete chewing, biting, and other movements of the upper and lower teeth to obtain three-dimensional mandibular movement data, which is then processed in a computer to reproduce individual bite and mandibular edge movement for use by dental professionals.
[0003] Traditional functional treatment can be complex and highly dependent on clinical experience. Digital recording can therefore facilitate functional treatment by simplifying the clinical process and providing greater diagnostic accuracy. When combined with computer-aided manufacturing, it can achieve greater efficiency, higher precision, reduced post-processing, and shorter clinical time. The mandibular jigs used in these mandibular motion recording device accessories are generally pre-made jigs with regular shapes (e.g., Figure 1 ), when in use, dental medical workers need to use tools such as dental forceps to make manual adjustments to adapt to the subject's mandibular dental arch morphology, so that it can be fixed on the labial side of the mandibular teeth. At present, the mandibular fixture needs to have enough space in the mandibular dental arch to bind the device without affecting the subject's functional movements such as biting and chewing. However, for subjects with deep overbite (the maxillary teeth cover the mandibular teeth too much) with very limited space in the anterior dental arch, they cannot bite normally or cannot perform digital recording of normal mandibular movement after installing the finished mandibular fixture. For those with mandibular teeth that are too short or the mandibular dental arch morphology is complex, the finished mandibular fixture cannot be installed, and thus the digital system cannot be used for further analysis and treatment of their mandibular movement. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a personalized clamp for a mandibular movement recording device.
[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:
[0006] A personalized fixture for a mandibular motion recording device, comprising:
[0007] An intraoral bonding device, comprising a first plate and a second plate, wherein two first plates are provided, each of which is arc-shaped and adapted to the curvature of the tooth surface of the adjacent lower molars, and the two first plates are respectively used to be bonded to the labial side of the lower molars on both sides, and the second plate is located on the labial side of the mandibular teeth, and the two first plates are respectively fixedly connected to the two sides of the second plate, and the distance between the second plate and the labial side of the mandibular teeth is greater than or equal to the thickness of the maxillary teeth;
[0008] A fixer is used to install a mandibular sensor of a mandibular movement recorder, and the fixer is fixedly connected to a side of the second plate away from the mandibular teeth.
[0009] As a preferred solution of the personalized fixture for the mandibular movement recording device of the present invention, the side of the first plate body facing the labial side of the lower molar is coated with a curing resin.
[0010] As a preferred solution of the personalized fixture for mandibular movement recording equipment described in the present invention, the first plate body is provided with overflow grooves on the side facing the tooth surface of the lower molars, the number of which is the same as the number of lower molars, and each of the overflow grooves is aligned with the tooth surface of an adjacent lower molar.
[0011] As a preferred solution of the personalized clamp for the mandibular movement recording device described in the present invention, the cross section of the glue overflow groove is arc-shaped.
[0012] As a preferred solution of the personalized clamp for the mandibular movement recording device described in the utility model, the fixer includes a connecting rod fixedly connected to the side of the second plate body away from the mandibular teeth and a magnetic seat fixedly arranged at the end of the connecting rod, and the mandibular sensor is fixedly mounted on the magnetic seat by magnetic attraction.
[0013] As a preferred solution of the personalized clamp for the mandibular movement recording device described in the present invention, the magnetic base is provided with a plurality of observation holes for observing whether the mandibular sensor is installed in place.
[0014] As a preferred solution of the personalized clamp for the mandibular movement recording device of the present invention, the thickness of the first plate body and the second plate body is 0.7 mm.
[0015] As a preferred solution of the personalized clamp for mandibular movement recording equipment described in the utility model, the length of the connecting rod is 9.5 mm, the diameter of the magnetic base is 29 mm, and the width of the end of the magnetic base connected to the connecting rod is 8.2 mm.
[0016] The beneficial effects of the utility model are:
[0017] (1) The present invention ensures that when a subject with a deep overbite uses the device, there is no interference between the maxillary and mandibular teeth during lateral movement by setting the distance between the second plate and the labial side of the mandibular teeth to be greater than or equal to the thickness of the maxillary teeth.
[0018] (2) The present invention has overflow grooves on the side of the first plate facing the tooth surface of the lower molars, the same number of which is equal to the number of lower molars, and each overflow groove is aligned with the tooth surface of an adjacent lower molar. By reserving overflow grooves on the first plate facing the tooth surface of each lower molar, excess adhesive material can be easily discharged.
[0019] (3) The utility model uses an intraoral scanner to scan the patient's maxillary and mandibular dental arches and occlusal records to obtain a digital model, and then uses 3D printing to make a fixture so that the fixture can better adapt to the shape of the user's mouth, thereby ensuring the bonding stability of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0021] Figure 1 A schematic diagram of the structure of a mandibular clamp in an existing mandibular movement recording device;
[0022] Figure 2 Schematic diagram of the structure of the personalized fixture used for mandibular movement recording equipment;
[0023] Figure 3 A schematic diagram of the use of the personalized fixture for the mandibular movement recording device provided in this application;
[0024] Wherein: 1. First plate; 2. Second plate; 3. Fixer; 4. Glue overflow groove; 5. Connecting rod; 6. Magnetic seat; 7. Observation hole. DETAILED DESCRIPTION
[0025] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific implementation methods and in conjunction with the accompanying drawings.
[0026] Figure 2A schematic diagram of the structure of a personalized fixture for a mandibular motion recording device provided in an embodiment of the present application. The device includes an intraoral adhesive device and a holder 3. The intraoral adhesive device can be adhered to the user's oral cavity. The holder 3 is fixedly connected to the intraoral adhesive device and is used to mount the mandibular sensor of the mandibular motion recorder. When the user performs actions such as biting and chewing, the mandibular sensor can obtain three-dimensional mandibular motion data.
[0027] Specifically, the intraoral adhesive device includes a first plate body 1 and a second plate body 2. Figure 2 Two first plates 1 are provided, each of which is bonded to the labial side of the user's mandibular teeth. The first plates 1 are generally arc-shaped, and each first plate 1 matches the curvature of the adjacent mandibular teeth. The second plates 2 are fixedly connected at both ends to the adjacent ends of the two first plates 1. When the two first plates 1 are bonded to the labial side of the user's mandibular teeth, the second plates 2 are located on the labial side of the user's mandibular teeth.
[0028] It should be noted that the second plate 2 protrudes toward the labial side of the mandibular teeth, and the distance between the second plate 2 and the labial side of the mandibular teeth is greater than or equal to the thickness of the maxillary teeth. This prevents interference during lateral movement of the maxillary and mandibular teeth (filing together) when using the device in individuals with deep overbite. Generally, the distance between the second plate 2 and the labial side of the mandibular teeth is maintained at 7 mm.
[0029] Fixture 3 is used to install the mandibular sensor of the mandibular motion recorder. Figure 2 The retainer 3 is fixedly connected to the side of the second plate 2 away from the mandibular teeth. The retainer 3 includes a connecting rod 5 fixedly connected to the side of the second plate 2 away from the mandibular teeth and a magnetic base 6 fixedly disposed at the end of the connecting rod 5. The mandibular sensor is fixed to the magnetic base 6 by magnetic attraction.
[0030] In this embodiment, the length of the connecting rod 5 is 9.5 mm, the diameter of the magnetic base 6 is 29 mm, and the width of the end where the magnetic base 6 connects to the connecting rod 5 is 8.2 mm. The magnetic base 6 is provided with several observation holes 7 for observing whether the mandibular sensor is properly installed.
[0031] To use the device, apply an appropriate amount of self-curing acrylic resin to the side of the first plate 1 facing the mandibular teeth. Gently adhere the device to the corresponding mandibular teeth, remove any excess acrylic resin, and allow the material to cure. A magnetic mandibular sensor is then placed on the fixture 3. The subject then follows the instructions to perform chewing, biting, and other mandibular movements. Three-dimensional mandibular motion data is acquired from the mandibular sensor and processed in a computer to reproduce individual bite and mandibular margin movement. This allows dental professionals to assess the overall status and physiological characteristics of the oral and maxillofacial system and evaluate the efficacy of oral health treatments.
[0032] Better, see Figure 2 On the side of the first plate 1 facing the lower molar surface, overflow grooves 4 are provided, equal in number to the number of lower molars, with each overflow groove 4 aligned with the tooth surface of an adjacent lower molar. The overflow grooves 4 have an arc-shaped cross-section. By preserving overflow grooves 4 on the first plate 1 facing each lower molar surface, excess adhesive material can be easily drained.
[0033] In this embodiment, the personalized fixture for the mandibular motion recording device was prepared by first scanning the patient's maxillary and mandibular dental arches and bite record using an intraoral scanner (TRIOS; 3Shape A / S) to obtain a digital model. This digital model was then imported into CAD software (Dental System; 3Shape A / S) for design. The design consisted of three parts: a first plate 1, a second plate 2, and a fixture 3. The first plate 1 of the virtual fixture was designed on the mandibular digital model, aligned along the labial surface of the patient's mandibular teeth. The distance between the first plate 1 and the labial surface of the mandibular teeth was 0.07 mm to provide an adequate bonding area. The thickness of the first plate 1 was set to 0.7 mm to ensure sufficient strength. The bite record was imported to eliminate occlusal interference. Subsequently, the second plate 2 was designed using SolidWorks (SolidWorks Corp., MA, USA) to connect the two first plates 1. The second plate 2 protrudes toward the front of the mouth. The length of the connecting rod 5 in the fixture 3 was set to 9.5 mm, the diameter of the magnetic base 6 was set to 29 mm, and the width of the end where the magnetic base 6 connected to the connecting rod 5 was greater than 8.2 mm. The design files of the first plate 1, second plate 2, and fixture 3 were input into CAD software, integrated into a virtual fixture, and converted into an STL (stereolithography language) file. Finally, the STL file was sent to an SLM (selective laser melting) 3D printer (IE150-HII, Profeta, China). The SLM process was set to a layer thickness of 40 microns and a laser power of 180 W. Support structures were generated, and the fixture was printed using magnetic steel powder (18Ni300) to ensure magnetic attraction with the mandibular sensor. The supports were removed, and the printed fixture was polished. Adjustments were made as needed and the fixture was thoroughly sterilized.
[0034] Therefore, the technical solution of this application uses an intraoral scanner to scan the patient's maxillary and mandibular dental arches and bite records to obtain a digital model, which is then produced through 3D printing to create a fixture that better adapts to the shape of the user's mouth, thereby ensuring the fixture's bonding stability. At the same time, by setting the distance between the second plate 2 and the labial side of the mandibular teeth to be greater than or equal to the thickness of the maxillary teeth, it can be ensured that when a deep overbite subject uses the device, the maxillary and mandibular teeth will not interfere with each other during lateral movement.
[0035] In addition to the above embodiments, the present invention may also have other implementation methods; any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.
Claims
1. A personalized fixture for a mandibular movement recording device, characterized by: include: An intraoral bonding device comprises a first plate body (1) and a second plate body (2), wherein the first plate body (1) is provided with two pieces, each of the first plate bodies (1) is arc-shaped and adapted to the curvature of the tooth surface of the adjacent lower molars, the two first plate bodies (1) are respectively used to be bonded to the labial side of the lower molars on both sides, the second plate body (2) is located on the labial side of the mandibular teeth, and the two first plate bodies (1) are respectively fixedly connected to the two sides of the second plate body (2), and the distance between the second plate body (2) and the labial side of the mandibular teeth is greater than the thickness of the maxillary teeth; A fixer (3) is used for installing a mandibular sensor of a mandibular movement recorder, and the fixer (3) is fixedly connected to a side of the second plate (2) away from the mandibular teeth.
2. The personalized fixture for mandibular movement recording equipment according to claim 1, characterized in that: The side of the first plate (1) facing the labial side of the lower molars is coated with a curing resin.
3. The personalized fixture for mandibular movement recording equipment according to claim 2, characterized in that The first plate (1) is provided with glue overflow grooves (4) on one side facing the tooth surface of the lower molars, the number of which is the same as the number of the lower molars, and each of the glue overflow grooves (4) is aligned with the tooth surface of an adjacent lower molar.
4. The personalized fixture for mandibular movement recording equipment according to claim 3, characterized in that: The cross section of the glue overflow groove (4) is in an arc shape.
5. The personalized fixture for mandibular movement recording equipment according to claim 1, characterized in that: The fixator (3) comprises a connecting rod (5) fixedly connected to the side of the second plate (2) away from the mandibular teeth and a magnetic seat (6) fixedly arranged at the end of the connecting rod (5); the mandibular sensor is fixedly mounted on the magnetic seat (6) by magnetic attraction.
6. The personalized fixture for the mandibular movement recording device according to claim 5, characterized in that: The magnetic seat (6) is provided with a plurality of observation holes (7) for observing whether the mandibular sensor is installed in place.
7. The personalized fixture for mandibular movement recording equipment according to claim 1, characterized in that: The thickness of the first plate body (1) and the second plate body (2) is 0.7 mm.
8. The personalized fixture for the mandibular movement recording device according to claim 5, characterized in that: The length of the connecting rod (5) is 9.5 mm, the diameter of the magnetic seat (6) is 29 mm, and the width of the end portion of the magnetic seat (6) connected to the connecting rod (5) is 8.2 mm.