Bonding type jaw pad expansion forward traction and remote movement molar appliance
Through the use of bonded jaw pad expansion, forward distraction and distalization of molar orthodontic appliances, and the use of multiple bases and spiral expander design, the problems of insufficient maxillary development and anterior crossbite are solved, the distalization of the upper molars is achieved, and the efficiency and comfort of orthodontic treatment are improved.
Patent Information
- Application Number
- CN202422851227.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Traditional arch expansion and protraction appliances cannot solve the problems of maxillary underdevelopment, anterior crossbite and mesial displacement of the upper first molar at the same time, and there is a risk of loss and displacement, which increases the number of follow-up visits and treatment time for patients.
A bonded jaw pad expansion and distalization appliance was designed. Multiple bases and spiral expanders were combined with molar jaw pads and bands to achieve maxillary widening and molar distalization. Resin materials were used to improve retention and comfort.
Effectively expand the width of the maxillary bone, promote maxillary bone growth, correct anterior crossbite and molar position, improve treatment efficiency, reduce the risk of tooth loss, and enhance comfort and treatment effect.
Smart Images

Figure CN223473915U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of orthodontic technology, specifically an adhesive occlusal pad for expanding and retracting molars, which aims to solve problems such as insufficient maxillary bone development, anterior crossbite, and mesial displacement of the upper first molar, so as to improve the efficiency of orthodontic treatment. Background Technology
[0002] Anterior crossbite is a common malocclusion in orthodontic clinics, severely affecting patients' occlusal function and facial aesthetics, and early treatment is recommended. This type of malocclusion often manifests as insufficient development of the maxilla in three dimensions or excessive development of the mandible, or both. Orthodontic treatment requires maxillary expansion and anterior traction to inhibit mandibular growth and development, improve jaw misalignment, and correct anterior crossbite. If the patient also has premature loss of the upper second deciduous molar and mesial displacement of the upper first molar, traditional expansion and traction appliances such as the Hyrax or Hass expander cannot simultaneously push the upper first molar backward. After the expansion and traction treatment is completed, a new appliance must be designed to distalize the upper first molar, making the treatment process cumbersome and time-consuming, and involving back-and-forth tooth movement.
[0003] Furthermore, traditional orthodontic appliances with expansion and traction have limitations in design and application. The retention of the appliance to the teeth is insufficient, making it prone to falling out or shifting. This necessitates removal, cleaning of the tooth surface and the appliance, and re-bonding. This increases the number of patient visits and the dentist's clinical work time, prolonging the patient's orthodontic treatment duration. Utility Model Content
[0004] The purpose of this invention is to provide an adhesive jaw pad for expanding and retracting molars, which simultaneously addresses issues such as maxillary hypoplasia, anterior crossbite, and mesial displacement of the maxillary first molar, thereby improving the efficiency of orthodontic treatment.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an adhesive occlusal pad for expanding, retracting, and displacing molars, comprising:
[0006] The baseplate includes a first anterior baseplate located on the left side of the anterior maxilla, a second anterior baseplate located on the right side of the anterior maxilla, a first posterior baseplate located on the left side of the posterior maxilla, and a second posterior baseplate located on the right side of the posterior maxilla. Each baseplate is set close to the palate and is spaced apart from each other. The first anterior baseplate is attached to the left upper first premolar, the second anterior baseplate is attached to the right upper first premolar, the first posterior baseplate is attached to the left upper first molar, and the second posterior baseplate is attached to the right upper first molar.
[0007] The palatal expander includes a mid-palatal expander installed between a first anterior base and a second anterior base, a first palatal lateral expander installed between a first anterior base and a first posterior base, and a second palatal lateral expander installed between a second anterior base and a second posterior base.
[0008] In some embodiments, a first band and a second band are respectively attached to the upper first premolars on the left and right sides, and the first band and the second band are respectively connected to the palatal expander through a first anterior traction hook and a second anterior traction hook.
[0009] In some embodiments, a third band and a fourth band are respectively attached to the upper first molars on the left and right sides. The third band and the fourth band are respectively connected to the first palatal expander and the second palatal expander via a first rear traction hook and a second rear traction hook.
[0010] In some embodiments, molar pads are placed on both sides of the maxillary molars.
[0011] In some embodiments, the molar occlusal pad includes two first occlusal pads and two second occlusal pads, wherein the two first occlusal pads are respectively placed on the left and right upper first premolars and respectively disposed on a first band and a second band, and the two second occlusal pads are respectively placed on the left and right upper first molars and respectively disposed on a third band and a fourth band.
[0012] In some embodiments, the base is made of resin material.
[0013] In some embodiments, a first traction hook and a second traction hook extending toward the tooth surface are symmetrically provided on the first front base and the second front base, respectively.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] This invention effectively expands the width of the maxilla by using multiple spaced-apart bases and multiple spiral expanders positioned between the bases, stimulating suture growth and maxillary bone development, thereby achieving the goal of orthodontic treatment. This device can simultaneously address maxillary hypoplasia, anterior crossbite, and mesial displacement of the upper first molar, resulting in significant therapeutic effects and helping patients quickly restore normal occlusal function and facial aesthetics. Attached Figure Description
[0016] Figure 1 This is a schematic diagram showing the installation of the device of this utility model in the upper and lower jaws;
[0017] Figure 2 This is a schematic diagram showing the installation of each expander of the present invention at the maxilla;
[0018] Figure 3This is a schematic diagram showing the installation of each base of the device of this utility model at the upper jaw.
[0019] In the diagram: 100, maxilla; 1, maxillary first premolar; 2, maxillary second premolar; 3, maxillary first molar; 4, first band; 5, first anterior traction hook; 6, second band; 7, second anterior traction hook; 8, palatal expander; 9, third band; 10, first posterior traction hook; 11, first palatal expander; 12, fourth band; 13, second posterior traction hook; 14, second palatal expander; 15, first anterior base; 16, second anterior base; 17, first posterior base; 18, second posterior base; 19, first jaw pad; 20, second jaw pad; 21, first traction hook; 22, second traction hook. Detailed Implementation
[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0021] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0024] like Figure 1-3 As shown, this embodiment provides an adhesive occlusal pad for expanding and retracting molars. The device includes a base, which includes a first anterior base 15 located on the left anterior part of the maxilla 100, a second anterior base 16 located on the right anterior part of the maxilla 100, a first posterior base 17 located on the left posterior part of the maxilla 100, and a second posterior base 18 located on the right posterior part of the maxilla 100. Each base is set close to the palate and spaced apart from each other. The first anterior base 15 is attached to the left upper first premolar 1, the second anterior base 16 is attached to the right upper first premolar 1, the first posterior base 17 is attached to the left upper first molar 3, and the second posterior base 18 is attached to the right upper first molar 3. The base is used to connect the force-applying devices, so that the orthodontic appliance forms a whole, enhancing retention, stability, and resistance.
[0025] The device also includes a spiral palatal expander, comprising a mid-palatal expander 8 installed between the first anterior base 15 and the second anterior base 16, a first lateral palatal expander 11 installed between the first anterior base 15 and the first posterior base 17, and a second lateral palatal expander 14 installed between the second anterior base 16 and the second posterior base 18. The spacing between the bases can be adjusted by adjusting the expanders. Specifically, the mid-palatal expander 8 can be adjusted to widen the gap between the first anterior base 15 and the second anterior base 16. The spacing is increased to widen the maxillary 100, stimulate suture growth, and promote the growth and development of the maxillary 100 bone, thereby achieving the purpose of orthodontic treatment. Furthermore, the spacing between the first anterior base 15 and the first posterior base 17, and between the second anterior base 16 and the second posterior base 18, can be increased by adjusting the first palatal expander 11 and the second palatal expander 14. This applies a pushing force to the left and right upper first molars 3 respectively, causing them to move distally and providing space for the subsequent eruption of the upper second premolar 2. Therefore, this invention can simultaneously solve the problems of insufficient maxillary 100 bone development, anterior crossbite, and mesial displacement of the upper first molar 3.
[0026] This bonded jaw pad appliance, designed for both arch expansion and molar distalization, effectively widens the maxillary 100 bone through its unique design, stimulating suture growth and overall bone development, thus achieving orthodontic goals. Simultaneously, it applies a pushing force to the maxillary first molars (3) on both sides, moving them distally and providing necessary space for the subsequent eruption of the maxillary second premolars (2). Therefore, this appliance can simultaneously address maxillary 100 bone hypoplasia, anterior crossbite, and mesial displacement of the maxillary first molars (3), demonstrating significant therapeutic efficacy and broad application prospects.
[0027] In some embodiments, as Figure 1-3As shown, a first band 4 and a second band 6 are respectively attached to the upper first premolar 1 on both the left and right sides. The first band 4 and the second band 6 are connected to the palatal expander 8 through the first anterior traction hook 5 and the second anterior traction hook 7, respectively. This design allows the palatal expander 8 to apply force to the first band 4 and the second band 6 through the first anterior traction hook 5 and the second anterior traction hook 7, thereby directly transmitting the expansion force to the upper first premolar 1, achieving effective widening of the maxillary 100 bone.
[0028] In some embodiments, as Figure 1-3 As shown, a third band 9 and a fourth band 12 are respectively attached to the upper first molars 3 on both sides. The third band 9 and the fourth band 12 are connected to the first palatal expander 11 and the second palatal expander 14 via a first posterior traction hook 10 and a second posterior traction hook 13, respectively. This design allows the first palatal expander 11 and the second palatal expander 14 to apply force to the third band 9 and the fourth band 12 through the first posterior traction hook 10 and the second posterior traction hook 13, thereby directly transmitting the thrust to the upper first molars 3, causing them to move distally. This design achieves direct transmission and effective distribution of thrust, ensuring that the upper first molars 3 receive continuous and stable thrust, thus effectively moving them distally. This not only provides the necessary space for the subsequent eruption of the upper second premolars 2 but also helps improve tooth alignment and occlusion. By precisely controlling the direction and magnitude of the thrust, this device can better adapt to the orthodontic needs of different patients, improving the accuracy of treatment results and patient satisfaction.
[0029] In some embodiments, as Figure 1 As shown, the molar occlusal pads include two first occlusal pads 19 and two second occlusal pads 20. The two first occlusal pads 19 are placed on the left and right upper first premolars 1 respectively, and are positioned on the first band 4 and the second band 6 respectively. The two second occlusal pads 20 are placed on the left and right upper first molars 3 respectively, and are positioned on the third band 9 and the fourth band 12 respectively. The molar occlusal pads can remove anterior crossbite locks, facilitating the correction of anterior crossbite. The combination of the first occlusal pads 19 with the first band 4 and the second band 6, and the combination of the second occlusal pads 20 with the third band 9 and the fourth band 12, enhances the retention force between the appliance and the teeth, reduces the possibility of appliance dislodgement or displacement, and thus improves the stability and reliability of the orthodontic effect. The molar occlusal pads can evenly distribute the orthodontic force and occlusal force, improving the comfort and efficacy of the orthodontic process. In addition, the presence of the molar occlusal pads also helps to adjust the occlusal relationship, enabling patients to maintain normal occlusal function during orthodontic treatment.
[0030] This bonded occlusal pad orthodontic appliance for expanding, retracting, and distalizing molars uses resin as the base material primarily because resin possesses excellent biocompatibility and plasticity, ensuring a close fit between the base and the patient's oral tissues while minimizing irritation and discomfort. The lightweight nature of resin also makes the entire appliance more portable, easier for patients to wear and adapt to. Furthermore, resin is easy to process and adjust, allowing for personalized customization based on the patient's specific oral condition, ensuring the appliance's precision and treatment effectiveness. Therefore, choosing resin as the base material not only improves the appliance's comfort and fit but also further enhances its therapeutic effect and patient satisfaction.
[0031] In some embodiments, as Figure 1 As shown, the first anterior base 15 and the second anterior base 16 are symmetrically provided with a first traction hook 21 and a second traction hook 22 extending towards the tooth surface, respectively. These two traction hooks are connected to a mask-type anterior traction device via rubber bands, thereby promoting maxillary bone development and correcting anterior crossbite. Specifically, when the rubber bands are hooked onto the first traction hook 21 and the second traction hook 22, they can generate a continuous pulling force. This pulling force helps to promote the sagittal growth and development of the maxilla, and its combined use with a palatal spiral expander can further promote the growth and development of the maxilla.
[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A bonded occlusal pad appliance for expanding, retracting, and distalizing molars, characterized in that, include: The base includes a first anterior base (15) located on the left anterior part of the maxilla (100), a second anterior base (16) located on the right anterior part of the maxilla (100), a first posterior base (17) located on the left posterior part of the maxilla (100), and a second posterior base (18) located on the right posterior part of the maxilla (100). Each base is set close to the palate and spaced apart from each other. The first anterior base (15) is attached to the left upper first premolar (1), the second anterior base (16) is attached to the right upper first premolar (1), the first posterior base (17) is attached to the left upper first molar (3), and the second posterior base (18) is attached to the right upper first molar (3). The palatal expander includes a mid-palatal expander (8) installed between the first anterior base (15) and the second anterior base (16), a first palatal expander (11) installed between the first anterior base (15) and the first posterior base (17), and a second palatal expander (14) installed between the second anterior base (16) and the second posterior base (18).
2. The adhesive-type jaw pad orthodontic appliance for expanding, retracting, and distalizing molars according to claim 1, characterized in that: The first and second bands (4 and 6) are respectively attached to the upper first premolars (1) on the left and right sides. The first band (4) and the second band (6) are connected to the palatal expander (8) through the first anterior traction hook (5) and the second anterior traction hook (7).
3. The adhesive-type jaw pad for expanding, traction, and distalizing molars as described in claim 1, characterized in that: The upper first molars (3) on the left and right sides are respectively fitted with a third band (9) and a fourth band (12). The third band (9) and the fourth band (12) are respectively connected to the first palatal expander (11) and the second palatal expander (14) through the first rear traction hook (10) and the second rear traction hook (13).
4. The adhesive-type jaw pad orthodontic appliance for expanding, retracting, and distalizing molars according to claim 1, characterized in that: Both sides of the maxillary (100) molars are covered with molar pads.
5. The adhesive-type jaw pad for expanding, retracting, and distalizing molars as described in claim 4, characterized in that: The molar occlusal pads include two first occlusal pads (19) and two second occlusal pads (20). The two first occlusal pads (19) are placed on the upper first premolars (1) on the left and right sides respectively, and are respectively placed on the first band (4) and the second band (6). The two second occlusal pads (20) are placed on the upper first molars (3) on the left and right sides respectively, and are respectively placed on the third band (9) and the fourth band (12).
6. The adhesive-type jaw pad for expanding, retracting, and distalizing molars according to claim 1, characterized in that: The base is made of resin material.
7. The adhesive-type jaw pad for expanding, retracting, and distalizing molars as described in claim 1, characterized in that: A first traction hook (21) and a second traction hook (22) extending toward the tooth surface are symmetrically provided on the first front base (15) and the second front base (16), respectively.