Two-dimensional maxillary molar movement device

Through the dual-dimensional maxillary molar moving device, the design of retention components and stressed components is used to solve the problems of micro-implant nail failure and nail bending and falling off during stress, and the effective movement and correction efficiency of maxillary molars are achieved.

CN111658190BActive Publication Date: 2025-07-25SHANGHAI XUHUI DISTRICT DENTAL HOSPITAL (SHANGHAI XUHUI DISTRICT DENTAL DISEASE CONTROL & PREVENTION INSTITUTE)
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Patent Information

Application Number
CN202010626183.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-07-02
Publication Date
2025-07-25
Estimated Expiration
2040-07-02

AI Technical Summary

Technical Problem

In the prior art, when dealing with cases of upper dental arch stenosis, the rapid arch expander has a high risk of micro-implant nail failure, frequent replacement of equipment and increased clinical costs, and the distance between the arch expander and the top of the palatal dome is large, resulting in the risk of nail bending or falling off during the stress process.

Method used

A two-dimensional maxillary molar movement device is adopted, including left and right retaining components and stressed components. The retaining components are close to the palatal mucosa to the greatest extent, and the micro-implanted nails are implanted into the bone to the greatest extent. The movement of the maxillary molars is achieved through the transverse and sagittal force components to avoid frequent replacement of micro-implanted nails.

Benefits of technology

It reduces the risk of micro-implant nail failure, achieves sufficient width changes in the maxillary transverse and sagittal directions, improves correction efficiency, and reduces patient pain and clinical costs.

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Abstract

The present invention provides a two-dimensional maxillary molar movement device, which relates to the field of orthodontic instruments. The two-dimensional maxillary molar movement device includes left and right retention components and a force application component. The left and right retention components are respectively arranged on the left and right sides of the median palatal suture, and the force application component is connected to the left and right retention components. Each retention component includes a metal crown sleeved on the first molar and a retention plate with a transverse groove in the middle. The metal crown and the retention plate are arranged on the same side of the median palatal suture and are connected by a wire. A mini-implant sleeve is connected to the buccal side of the metal crown corresponding to the maxillary zygomaticoalveolar crest. Force application component mounting holes are respectively arranged at the sagittal ends of the retention plate. In the present invention, the retention component can be closely attached to the palatal mucosa to the greatest extent, and the mini-implant can be implanted into the bone to the greatest extent, reducing the risk of failure during the force application process of the mini-implant. Moreover, during the orthodontic treatment, sufficient transverse width change of the maxilla can be achieved without removing the mini-implant.
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