Dental instrument
By setting jaw position adjustment parts and barrier features on the maxillary and mandibular shell-shaped dental instruments of dental instruments, the jaw position is adjusted by using the abutment relationship between the rod and the barrier features, the problem of teeth movement caused by the concentration of force of the traditional orthodontic device is solved, and a more uniform force distribution and greater therapeutic force are achieved.
Patent Information
- Application Number
- CN202421703507.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-17
AI Technical Summary
When adjusting the jaw position, the force applied to the teeth that fix the jaw position may cause undesirable movement of the teeth. In order to avoid this, the force applied by the instrument is limited, affecting the treatment effect.
A dental instrument is designed, including maxillary and mandibular shell-shaped dental instruments, as well as a mandibular position adjustment mechanism. By providing a fixed jaw position adjustment member on the side wall of the maxillary shell-shaped dental instrument and providing a barrier feature on the side wall of the mandible shell-shaped dental instrument, the position of the mandible relative to the maxillary is adjusted by using the abutment relationship between the rod and the barrier feature.
Through this design, the force and reaction force that adjusts the position of the jaw can be distributed more evenly, avoiding undesired movement of the stressed teeth, while allowing greater force to be applied and improving the therapeutic effect.
Smart Images
Figure CN222997937U_ABST
Abstract
Description
Technical Field
[0001] The present utility model generally relates to a dental instrument, and more particularly to a dental instrument capable of adjusting the position of the mandible. Background Art
[0002] At present, for more than 80% of patients with skeletal Class II malocclusion, the maxilla is normal and the mandible is retruded. Functional appliances are an important means to promote mandibular development and correct mandibular retrusion at an early stage. Although traditional MARA appliances and Herbst appliances have significant therapeutic effects in this regard, since they are directly fixed to single teeth, on the one hand, this causes the force exerted by the appliance to be concentrated on the teeth to which the fixed appliance is attached, which may lead to undesirable movement of these teeth. On the other hand, in order to avoid the above situation, the magnitude of the force exerted by the appliance is limited during the design of the appliance, which will affect the therapeutic effect.
[0003] In view of the above, it is necessary to provide a new dental instrument capable of adjusting the position of the mandible. Summary of the Utility Model
[0004] One aspect of the present utility model provides a dental instrument, which includes: a first shell-shaped dental instrument, which is an integral shell and forms a cavity for accommodating the first dentition of a patient. The first shell-shaped dental instrument is provided with a fixed jaw position adjusting member on a first side wall. The jaw position adjusting member includes a mounting portion and a rod portion extending from the mounting portion towards the opposing jaw. Wherein, the first dentition is the maxillary dentition or the mandibular dentition, and the first side wall is the lingual side wall or the buccal side wall; and a second shell-shaped dental instrument, which is an integral shell and forms a cavity for accommodating the second dentition of the patient. The second shell-shaped dental instrument is provided with a fixed protruding blocking feature on the side wall on the same side as the first side wall. The second dentition is the opposing dentition of the first dentition. The rod portion abuts against the side of the blocking feature closer to the jaw position adjusting member in the front-rear direction to prevent further relative movement of the first and second shell-shaped dental instruments in the front-rear direction, thereby adjusting the position of the patient's mandible relative to the maxilla in the front-rear direction.
[0005] In some embodiments, the adjustment amount of the position of the patient's mandible relative to the patient's maxilla in the front-rear direction is determined by the positions of the jaw position adjusting member and the blocking feature on the first and second shell-shaped dental instruments in the front-rear direction.
[0006] In some embodiments, the angle between the extending direction of the rod portion and the vertical direction is less than 30 degrees.
[0007] In some embodiments, the mounting portion is made of a polymer material, the rod portion is made of a metal material, one end of the rod portion opposite to the free end is wrapped within the mounting portion, and the jaw position adjusting member is fixed to the first shell-shaped dental instrument by bonding the mounting portion thereto.
[0008] In some embodiments, the surface of the blocking feature against which the rod portion abuts forms a protrusion away from the second shell-shaped dental instrument to prevent the rod portion from slipping out of the surface and misaligning the blocking feature.
[0009] In some embodiments, the blocking feature is an independent element and is fixed to the second shell-shaped dental instrument by bonding.
[0010] In some embodiments, the first shell-shaped dental instrument and / or the second shell-shaped dental instrument is a shell-shaped tooth aligner capable of repositioning the first dental arch and / or the second dental arch from a current tooth layout to a desired tooth layout. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The above and other features of the present application will be further described below in conjunction with the accompanying drawings and their detailed descriptions. It should be understood that these drawings only show several exemplary embodiments of the present application and should not be regarded as limiting the protection scope of the present application. Unless otherwise specified, the drawings do not have to be to scale, and like reference numerals represent like components.
[0012] Figure 1A Schematically shows a dental instrument in an embodiment of the present application;
[0013] Figure 1B Schematically shows Figure 1A the assembly relationship between the components of the shown dental instrument; and
[0014] Figure 2 Schematically shows the geometric shape of the surface of the blocking feature against which the rod portion abuts in an embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The following detailed description refers to the accompanying drawings that form a part of this specification. The illustrative embodiments mentioned in the specification and the drawings are for illustrative purposes only and are not intended to limit the protection scope of the present application. Under the inspiration of the present application, those skilled in the art can understand that many other embodiments can be adopted and various changes can be made to the described embodiments without departing from the gist and protection scope of the present application. It should be understood that the various aspects of the present application described and illustrated herein can be arranged, replaced, combined, separated, and designed in many different configurations, and these different configurations are all within the protection scope of the present application.
[0016] One aspect of the present utility model provides a dental instrument, which includes an upper shell-shaped dental instrument, a lower shell-shaped dental instrument, and a lower jaw position adjusting mechanism. The lower jaw position adjusting mechanism is arranged on the side surfaces of the upper and lower shell-shaped dental instruments. Through such an arrangement, the force and the reaction force for adjusting the position of the lower jaw in the front-back direction are more evenly distributed to each lower tooth and upper tooth through the upper and lower shell-shaped dental instruments. This enables a greater force to be applied to the lower jaw on the premise of avoiding unwanted movement of the teeth under force.
[0017] Please refer Figures 1A - 1B , in which, Figure 1A Figure 100 schematically shows a dental instrument in an embodiment of the present application, Figure 1B schematically shows Figure 1A the assembly relationship between the components of the dental instrument 100 shown.
[0018] The dental instrument 100 is used to lead the lower jaw forward, and it includes an upper shell-shaped dental instrument 101, a lower shell-shaped dental instrument 103, a jaw position adjusting member 1013, and a blocking feature 1033.
[0019] The upper shell-shaped dental instrument 101 is an integral shell, forming a cavity 1011 for accommodating the upper dental arch of the patient. The upper shell-shaped dental instrument 101 is fixedly provided with a jaw position adjusting member 1013 on the buccal side of the posterior tooth area. The jaw position adjusting member 1013 includes a mounting portion 1013a and a rod portion 1013b extending from the mounting portion 1013a towards the opposing jaw. The jaw position adjusting member 1013 is fixed to the upper shell-shaped dental instrument 101 through the mounting portion 1013a.
[0020] In one embodiment, the mounting portion 1013a can be a solid made of a polymer material, and the rod portion 1013b is made of a metal material, with one end thereof fixed to the mounting portion 1013a. For example, one end of the rod portion 1013b is buried in the mounting portion 1013a, or is mechanically fixed to the mounting portion 1013a.
[0021] In another embodiment, the mounting portion 1013a and the rod portion 1013b can be integrally formed, and it can be made of a metal material or a polymer material.
[0022] In one embodiment, the mounting portion 1013a can be adhesively fixed to the upper shell-shaped dental instrument 101 by an adhesive bonding method.
[0023] The lower shell-shaped dental instrument 103 is an integral shell, forming a cavity 1031 for accommodating the upper dental arch of the patient. The lower shell-shaped dental instrument 103 is fixedly provided with a protruding blocking feature 1033 on the buccal side of the posterior tooth area.
[0024] In one embodiment, the blocking feature 1033 may be a component that is independently manufactured from the mandibular shell-shaped dental appliance 103 and is fixed to the mandibular shell-shaped dental appliance 103 by bonding or welding.
[0025] In another embodiment, the blocking feature 1033 may also be formed integrally with the mandibular shell-shaped dental appliance 103, for example, when the mandibular shell-shaped dental appliance 103 is manufactured using a hot pressing film forming technology or a 3D printing technology.
[0026] When in use, the rod portion 1013b abuts against the blocking feature 1033 to prevent the lower jaw from further moving in the direction of the rod portion 1013b, thereby adjusting the position of the lower jaw along the front-to-back direction.
[0027] The leading amount of the dental appliance 100 on the mandible is determined by the position of the jaw position adjusting member 1013 on the maxillary shell-shaped dental appliance 101 along the mesiodistal direction and the position of the blocking feature 1033 on the mandibular shell-shaped dental appliance 103 along the mesiodistal direction.
[0028] exist Figures 1A - 1B In the illustrated embodiment, the rod 1013b extends substantially in a vertical direction, but it is understood that it may also be at an angle to the vertical direction as long as the function (leading the mandible) of the dental device 100 is not affected. In one embodiment, the angle between the extending direction of the rod 1013b and the vertical direction is less than 30 degrees.
[0029] Please refer to Figure 2 The surface where the blocking feature 1033 abuts against the rod 1013b forms a protrusion 1033a toward the side where the rod 1013b is located away from the mandibular shell-shaped dental appliance 103, so as to prevent the rod 1013b from slipping away from the blocking feature 1033.
[0030] Since the diameter of the rod portion 1013b is much smaller than that of the mounting portion 1013a, the volume of the jaw adjustment mechanism is reduced to the greatest extent, thereby reducing the foreign body sensation when worn.
[0031] It can be understood that if the maxillary shell-shaped dental appliance 101 and the mandibular shell-shaped dental appliance 103 are shell-shaped dental appliances, the geometry of their tooth-receiving cavities enables them to reposition the patient's maxillary and mandibular dentition from the current tooth layout to the desired tooth layout by adjusting the tooth posture.
[0032] exist Figure 1A In the illustrated embodiment, the dental instrument 100 is used for advancing the mandible, and therefore, the rod portion 1013 b is located at the distal side of the blocking feature 1033 , or in other words, the rod portion 1013 b is located behind the blocking feature 2033 .
[0033] It can be understood that if it is used for guiding the mandible, then the rod portion 1013b should be located on the mesial side of the blocking feature 1033, or rather, the rod portion 1013b is located in front of the blocking feature 1033.
[0034] The jaw position adjusting member 1013 can also be fixed to the mandibular shell-shaped dental instrument 103. Correspondingly, the blocking feature 1033 is located on the maxillary shell-shaped dental instrument 101.
[0035] Although, in the above exemplary embodiments, the blocking feature and the jaw position adjusting member are provided on the buccal side of the upper and lower shell-shaped dental instruments, it can be understood that they can also be provided on the lingual side of the upper and lower shell-shaped dental instruments.
[0036] Although, in the above exemplary embodiments, only the blocking feature and the jaw position adjusting member on one side are shown, it can be understood that a more preferred embodiment is to provide the blocking feature and the jaw position adjusting member on both the left and right sides of the upper and lower shell-shaped dental instruments.
[0037] Although multiple aspects and embodiments of the present application are disclosed herein, other aspects and embodiments of the present application will be apparent to those skilled in the art inspired by the present application. The various aspects and embodiments disclosed herein are for illustrative purposes only and not for limiting purposes. The scope of protection and the gist of the present application are determined only by the appended claims.
[0038] Similarly, the various diagrams can show the exemplary architectures or other configurations of the disclosed methods and systems, which help to understand the features and functions that can be included in the disclosed methods and systems. The claimed subject matter is not limited to the shown exemplary architectures or configurations, and the desired features can be implemented with various alternative architectures and configurations. In addition, for flowcharts, functional descriptions, and method claims, the order of the boxes given here should not be limited to the order in which various embodiments perform the functions in the same order, unless explicitly stated in the context.
[0039] Unless otherwise explicitly stated, the terms and phrases used herein and their variants should be interpreted as open-ended rather than restrictive. In some instances, the presence of expansive vocabulary and phrases such as "one or more", "at least", "but not limited to" or other similar expressions should not be construed as intending or requiring a narrowing in examples where such expansive expressions may not be present.
Claims
1. A dental instrument, characterized in that: It includes: A first shell-shaped dental appliance, which is an integrated shell and forms a cavity for accommodating a first dentition of a patient, wherein a fixed jaw position adjusting member is provided on a first side wall of the first shell-shaped dental appliance, and the jaw position adjusting member comprises a mounting portion and a rod portion extending from the mounting portion toward the opposite jaw, wherein the first dentition is a maxillary dentition or a mandibular dentition, and the first side wall is a lingual wall or a buccal wall; and The second shell-shaped dental appliance is an integral shell, forming a cavity for accommodating the second dentition of the patient, the second shell-shaped dental appliance is provided with a fixed protruding blocking feature on the side wall on the same side as the first side wall, and the second dentition is the dentition opposite to the first dentition, The rod abuts against the side of the blocking feature close to the jaw position adjusting member in the front-back direction to prevent further relative movement of the first and second shell-shaped dental instruments in the front-back direction, thereby adjusting the position of the patient's lower jaw relative to the upper jaw in the front-back direction.
2. The dental apparatus according to claim 1, wherein: The amount of adjustment of the position of the patient's lower jaw relative to the patient's upper jaw in the anterior-posterior direction is determined by the positions of the jaw adjustment member and the blocking features on the first and second shell-shaped dental appliances in the anterior-posterior direction.
3. The dental apparatus according to claim 1, wherein: The included angle between the extending direction of the rod and the vertical direction is less than 30 degrees.
4. The dental apparatus according to claim 1, wherein: The mounting portion is made of polymer material, the rod portion is made of metal material, the end of the rod portion opposite to the free end is wrapped in the mounting portion, and the jaw position adjusting member is fixed thereon by bonding the mounting portion to the first shell-shaped dental instrument.
5. The dental apparatus according to claim 1, wherein: The surface of the blocking feature for the rod to abut against is formed with a protrusion away from the second shell-shaped dental instrument to prevent the rod from sliding out of the surface and missing the blocking feature.
6. The dental apparatus according to claim 1, wherein: The blocking feature is a separate component and is fixed to the second shell-shaped dental appliance by bonding.
7. The dental apparatus according to claim 1, wherein: The first shell-shaped dental appliance and / or the second shell-shaped dental appliance is a shell-shaped dental appliance capable of repositioning the first dentition and / or the second dentition from a current tooth configuration to a desired tooth configuration.