Plastic appliance digitalizing method of cleft palate alveolar bone

Abstract

The invention belongs to a non-invasive treating method of congenital cleft palate in the medical field, especially relating to a shape appliance digitalizing method of a cleft palate alveolar bone, which comprises the following steps of: 1) obtaining the jaw arch fault information of a cleft palate alveolar bone by using the microscopic CT (computed tomography) technology, wherein the thickness of a scanning layer is 50 mu m; 2) moving the cleft palate alveolar bone segment of a maxillary arch solid model to approach to a normal maxillary arch form from an abnormal form in a simulation manner in reverse engineering software, and simulating and demonstrating the shape change process step by step; 3) obtaining a digitalized model of the cleft palate alveolar bone jaw arch in each stage in the process of remedying according to the simulation and demonstration; 4) manufacturing an appliance retention column digitalized model used in each stage of shaping the alveolar bone according to the digitalized model of the cleft palate alveolar bone jaw arch; and 5) automatically processing a prototype of an alveolar bone shape appliance by using the rapid forming technology. A digitalized designing and manufacturing method of the shape appliance of a cleft palate alveolar bone independent of the experience and handwork of a doctor is provided.

Description

technical field [0001] The invention belongs to the non-traumatic treatment method for congenital cleft palate in the medical field, and in particular relates to a digital method for a cleft palate alveolar bone shaping appliance. Background technique [0002] Cleft lip and palate is the most common congenital maxillofacial defect deformity in the world. In China, the incidence of cleft palate is about 1.6‰ of the birth population, which brings great burden to society and family. Cleft palate directly leads to severe maxillary alveolar bone tissue defect in the patient, resulting in the loss of continuity of the maxillary arch and tissue displacement of the alveolar bone segment, which brings many difficulties to subsequent operations, so alveolar bone plastic surgery is required. A large number of clinical studies have proved that the maxillary alveolar bone of infants with cleft palate has strong plasticity. The use of appliances for alveolar bone shaping can maximize the ...

AI Technical Summary

Problems solved by technology

Existing CT includes ordinary tomographic CT and spiral CT, which belong to macroscopic CT at the level of naked eye resolution. Due to the limitation of its technical principle, the scanning slice thickness is generally 5-10mm. Even if ultra-thin slice scanning is used, the scanning slice thickness is still 1.0-1.5mm Left and right, this leads to the "stepped" surface of the final 3D model, and the accuracy cannot meet the needs of digital and precise design of alveolar bone shaping appliances

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