Shell-shaped dental instrument capable of adjusting jaw position of lower jaw
By designing oblique guides and locking structures for upper and lower transparent shells in dental instruments, the stability problem caused by the jaw pad structure is solved, achieving forward mandibular movement and improved orthodontic results. It has the advantages of high efficiency, comfort and lightness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YINQI DENTAL TECH CO LTD
- Filing Date
- 2025-03-10
- Publication Date
- 2026-04-24
AI Technical Summary
The jaw pad structure of existing dental instruments makes it difficult for the upper and lower jaws to be stably fixed when wearing orthodontic appliances, affecting the orthodontic effect, and there is also the problem of slippage on the guide ramp.
A dental instrument comprising an upper transparent shell and a lower transparent shell was designed. Both are equipped with oblique guides and locking mechanisms in the posterior tooth region. Through the interlocking arc locking structure, the mandible is guided to move forward, thereby enhancing structural strength and improving occlusal stability.
It effectively prevents deformation of the oblique guide edge, gradually guides the mandible to move forward, improves deep overbite problems, enhances orthodontic results, and the hollow structure reduces weight, making it easier to remove the appliance, and is both comfortable and efficient.
Smart Images

Figure CN224155784U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of orthodontic technology, and particularly relates to a shell-shaped dental instrument that can adjust the position of the mandible. Background Technology
[0002] In orthodontic treatment, jaw pads are often used to guide the forward movement of the mandible. Generally, shell-shaped dental instruments with jaw pads are one-piece molded structures. The guide ramps of these jaw pads are typically planar structures with a certain slope. During clinical treatment, patients may experience difficulty maintaining stable jaw position for extended periods while wearing the appliance, and problems such as slippage of the guide ramps may occur, thus affecting the treatment outcome. Utility Model Content
[0003] To address the aforementioned problems in the existing technology, this utility model provides a shell-shaped dental instrument with a high-strength structure and better wearing and use effect, which can adjust the mandibular position.
[0004] To achieve the above objectives, this utility model provides an adjustable mandibular position shell-shaped dental instrument comprising an upper transparent shell and a lower transparent shell for guiding the forward growth of the mandible. The upper transparent shell has an upper oblique guide at a position corresponding to the posterior tooth region, and the lower transparent shell has a lower oblique guide at a position corresponding to the posterior tooth region. The upper and lower oblique guides are respectively provided with upper and lower locking buckles at corresponding positions. The upper and lower transparent shells are locked together at the upper locking buckle of the upper oblique guide and the lower locking buckle of the lower oblique guide, thereby adjusting the relative positional relationship between the upper and lower jaws through their mutual cooperation.
[0005] Furthermore, the upper oblique guide on the upper transparent shell is provided with a premolar-like cross-sectional structure and a posterior molar-like cross-sectional structure.
[0006] Furthermore, the lower oblique guide on the lower transparent shell body is provided with a premolar-like cross-sectional structure.
[0007] Furthermore, there are multiple internal rounded sections between the upper oblique guide transverse structure of the premolar and the transverse structure of the posterior molar.
[0008] Furthermore, there is an inner rounded corner between two adjacent premolar cross-sectional structures on the lower oblique guide.
[0009] Furthermore, the upper locking buckle of the upper inclined guide has an outwardly convex arc surface structure.
[0010] Furthermore, the lower latch of the lower inclined guide has a concave arc surface structure.
[0011] Furthermore, a certain gap is left between the matching latches of the upper and lower inclined guides, and the gap is controlled at about 1mm.
[0012] Furthermore, both the upper transparent shell and the lower transparent shell are integrally molded structures.
[0013] Furthermore, both the upper and lower oblique guides have a hollowed-out structure in the middle.
[0014] Furthermore, all positions of the upper and lower oblique guides are rounded.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This novel shell-shaped dental instrument for adjusting mandibular position strengthens the structure by incorporating a rounded design on the oblique guide, effectively preventing deformation of the guide's edges. Simultaneously, the use of concave and convex arc-shaped locking mechanisms gradually guides the mandible forward, thereby improving the patient's deep overbite problem and achieving a therapeutic effect. Furthermore, the hollowed-out structure reduces the material's weight, and the rounded design facilitates easier removal of the appliance. It offers advantages such as comfort, lightness, and high efficiency, and can be widely applied in the clinical treatment of deep overbite problems. Attached Figure Description
[0017] Figure 1 This is a side view of the structure of the present invention in use.
[0018] Figure 2 This is a front view of the upper and lower oblique guides in the usage state of this utility model;
[0019] Figure 3 This is a top view schematic diagram of the upward inclined guide structure of this utility model;
[0020] Figure 4 This is a top view schematic diagram of the downward inclined guide structure of this utility model;
[0021] Figure 5 This is a top view of the cross-sectional structure of the premolar-like structure of this utility model.
[0022] Figure 6 This is a top view of the cross-sectional structure of the posterior molar-like structure of this utility model.
[0023] In the diagram: 1-Upper transparent shell-like body; 2-Lower transparent shell-like body; 3-Upper oblique guide; 4-Lower oblique guide; 5-Upper locking; 6-Lower locking; 7-Transverse structure of premolar; 8-Transverse structure of posterior molar. Detailed Implementation
[0024] Combination Figure 1-6The shell-shaped dental instrument for adjusting mandibular position in this embodiment includes an upper transparent shell 1 and a lower transparent shell 2. The upper transparent shell 1 has an upper oblique guide 3 at a position corresponding to the posterior tooth region, and the lower transparent shell 2 has a lower oblique guide 4 at a position corresponding to the posterior tooth region. The upper oblique guide 3 and the lower oblique guide 4 each have an upper locking buckle 5 and a lower locking buckle 6 at corresponding positions. The upper transparent shell 1 and the lower transparent shell 2 engage and lock together at the positions of the upper locking buckle 5 of the upper oblique guide 3 and the lower locking buckle 6 of the lower oblique guide 4. During occlusion, the upper oblique guide 3 and the lower oblique guide 4 are tightened together by the interlocking upper locking buckle 5 and the lower locking buckle 6, which have a concave-convex, arc-shaped structure, thereby guiding the mandible to grow forward and achieving the therapeutic purpose.
[0025] Specifically, in this embodiment, the upper locking buckle 5 of the upper oblique guide 3 and the lower locking buckle 6 of the lower oblique guide 4 are provided with concave and convex mating surfaces. When the occlusal incisor ends are aligned and reconstructed, the mating surfaces allow the upper and lower jaws to make smooth contact, further improving the orthodontic effect.
[0026] Preferably, the upper oblique guide 3 on the upper transparent shell 1 is provided with a premolar-like cross-sectional structure 7 and a posterior molar-like cross-sectional structure 8.
[0027] Preferably, there are multiple inner rounded sections between two adjacent molar-like cross-sectional structures on the upper oblique guide 3.
[0028] Specifically, in this embodiment, two inwardly rounded structures are respectively provided on the upper and lower sides of the upper inclined guide 3. The inward rounding is provided along the height direction, and the concave curved surface can effectively increase the strength of the upper inclined guide 3.
[0029] Preferably, there is an inner rounded corner between two adjacent premolar cross-sectional structures 7 on the lower oblique guide 4.
[0030] Specifically, in this embodiment, an inner rounded corner is provided on each of the upper and lower sides of the lower inclined guide 4. The inner rounded corner is provided inward along the height direction, and the concave curved surface can effectively increase the strength of the lower inclined guide 4.
[0031] Preferably, the upper locking buckle 5 of the upper oblique guide 3 has an outwardly convex arc surface structure, and the lower locking buckle 6 of the lower oblique guide 4 has an inwardly concave arc surface structure. The concave-convex arc surface structure is beneficial to occlusal stability and can effectively guide the mandible to move forward.
[0032] Preferably, there is a certain gap between the matching buckles of the upper oblique guide 3 and the lower oblique guide 4. The gap is controlled at about 1mm. After a single orthodontic appliance is formed, the thickness of the upper buckle position of the oblique guide is about 0.5mm. This gap is the thickness when the upper buckle 5 and the lower buckle 6 are tightened together when the patient wears the orthodontic appliance and bites, thereby increasing the effect of incisor alignment.
[0033] Preferably, the upper transparent shell 1 and the lower transparent shell 2 are both integrally formed structures.
[0034] Preferably, both the upper inclined guide 3 and the lower inclined guide 4 have a hollow structure in the middle.
[0035] Preferably, all positions of the upper inclined guide 3 and the lower inclined guide 4 are rounded. Rounding is used to improve the demolding process.
[0036] The shell-shaped dental instrument for adjusting mandibular position in this embodiment effectively increases the strength of the upper oblique guide 3 and the lower oblique guide 4 by providing molar-like cross-sectional structures on the upper oblique guide 3 and the lower oblique guide 4 respectively. Through the cooperative design of the concave and convex arc locking mechanism of the upper oblique guide 3 and the lower oblique guide 4, the stability of the upper and lower jaw occlusion is improved. By gradually guiding the mandible forward, the mandibular position is improved, thereby achieving the purpose of treatment.
[0037] Many specific details have been set forth in the above description to provide a full understanding of this utility model. However, the above description is only a preferred embodiment of this utility model, and this utility model can be implemented in many other ways different from those described herein. Therefore, this utility model is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, shall still fall within the protection scope of the technical solution of this utility model.
Claims
1. A shell-shaped dental instrument adjustable for mandibular position, characterized in that: It includes an upper transparent shell (1) and a lower transparent shell (2) for guiding the mandible to grow forward. The upper transparent shell (1) is provided with an upper oblique guide (3) at a position corresponding to the posterior tooth area, and the lower transparent shell (2) is provided with a lower oblique guide (4) at a position corresponding to the posterior tooth area. The upper oblique guide (3) and the lower oblique guide (4) are respectively provided with upper locking buckles (5) and lower locking buckles (6) at corresponding positions. The upper transparent shell (1) and the lower transparent shell (2) are locked together at the positions of the upper locking buckle (5) of the upper oblique guide (3) and the lower locking buckle (6) of the lower oblique guide (4).
2. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: The upper oblique guide (3) on the upper transparent shell (1) is provided with a premolar-like cross-sectional structure (7) and a posterior molar-like cross-sectional structure (8).
3. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: The lower oblique guide (4) on the lower transparent shell (2) is provided with a premolar-like cross-sectional structure (7).
4. The shell-shaped dental instrument with adjustable mandibular position according to claim 2, characterized in that: There are multiple inward roundings between the upper oblique guide (3), the transverse structure of the premolar (7), and the transverse structure of the posterior molar (8).
5. The shell-shaped dental instrument with adjustable mandibular position according to claim 3, characterized in that: There is an inner rounding between the two adjacent premolar cross-sectional structures (7) on the lower oblique guide (4).
6. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: The upper latch (5) of the upper inclined guide (3) has an outwardly convex arc surface structure.
7. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: The lower latch (6) of the lower inclined guide (4) has an inwardly concave arc surface structure.
8. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: There is a certain gap between the matching latches of the upper inclined guide (3) and the lower inclined guide (4), and the gap is controlled at about 1mm.
9. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: Both the upper transparent shell (1) and the lower transparent shell (2) are integrally molded structures.
10. The shell-shaped dental instrument with adjustable mandibular position according to claim 1, characterized in that: Both the upper inclined guide (3) and the lower inclined guide (4) have a hollow structure in the middle.
11. The shell-shaped dental instrument with adjustable mandibular position according to claim 10, characterized in that: All positions of the upper inclined guide (3) and the lower inclined guide (4) are rounded.