Jaw guard plate design method and device, storage medium and program product

By optimizing the design of the palatal guard plate through calculation of normal contact force distribution and a four-dimensional dynamic maxillofacial motion tracking system, the problem of inaccurate design of the palatal guard plate buffer layer in the existing technology is solved, and personalized occlusal pressure adaptation and mechanical performance improvement are achieved.

CN121389640APending Publication Date: 2026-01-23XIAN HUAGUAN DENTAL PROD CO LTD
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Patent Information

Application Number
CN202511600123.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-04
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

In the existing technology, the design and manufacturing of palatal guards have a simplified design pattern with uniform thickness, which makes it difficult to accurately adjust the buffer layer of the palatal guard to meet the occlusal buffering needs of patients with temporomandibular joint dysfunction, and lacks effective simulation of dynamic occlusal force.

Method used

By acquiring a three-dimensional digital model of the patient's palate, the normal contact force distribution is calculated and projected to form a pressure distribution map. The thickness increment of the high-pressure area is mapped using a piecewise linear function. Combined with a four-dimensional dynamic maxillofacial motion tracking system, the mandibular motion trajectory is recorded. Three-dimensional mesh units are divided to optimize the lattice structure, and a jaw guard with a gradient microstructure is designed.

Benefits of technology

The design accuracy and mechanical properties of the jaw protector's buffer layer have been improved, enhancing its adaptability to individualized occlusal pressures, reducing material redundancy, and improving wearing comfort and fatigue resistance.

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Abstract

The invention discloses a jaw guard plate design method and device, a storage medium and a program product, relates to the technical field of jaw guard plate design, and aims to improve the design accuracy of a jaw guard plate buffer layer. The method comprises the following steps: extracting a palate profile curve from a smooth palate three-dimensional digital model of a patient; inwards shifting the palate profile curve by a preset safety distance to generate a jaw guard plate basic boundary; calculating the normal contact force distribution of the palate side tooth surface based on the occlusal contact data of the patient at the maximum apical interlacing position; projecting the normal contact force distribution to the surface of the palate model to form a palate pressure distribution diagram; identifying a high-pressure region with a pressure value greater than a preset threshold value in the palate pressure distribution diagram; establishing a local thickness control vector along the normal direction of the palate surface by taking the geometric center of the high-pressure area as a reference point; mapping the pressure value corresponding to each local thickness control vector into a local thickness increment by adopting a piecewise linear function; and superposing the local thickness increments to a preset basic thickness to generate a jaw guard plate model.
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