Complex-shaped gel-metal composite prosthesis and manufacturing method thereof

Abstract

The invention discloses a complex-shaped gel-metal composite prosthesis and a manufacturing method thereof. The prosthesis consists of a silicon rubber jacket and a three-dimensional bracket inside the silicon rubber jacket, wherein the silicon rubber jacket and a titanium mesh three-dimensional structure are simulated and manufactured through the assistance of a computer. The prosthesis can be completely attached to soft and hard tissue defects, has a good edge sealing and fixing effect, has certain supporting strength on the basis of recovering the attractive appearance of a patient, can resist physiological movement of an oral cavity jaw face, is difficult to deform, and provides a new direction for solving the problems of heavy weight, low elasticity, high hardness, a large number of side effects and the like of the conventional prosthesis.

Description

technical field [0001] The invention belongs to the field of maxillofacial defect repair, in particular to a gel-metal composite prosthesis with complex shape and a preparation method thereof. Background technique [0002] Jaw defects are usually caused by tumor resection or trauma, which will cause severe mastication, speech, swallowing functions and facial deformities in patients, and postoperative defect repair is necessary. The special position and special tissue structure of the maxilla make the application of surgical reconstruction methods such as bone grafting and tissue flap transfer very difficult. So far, oral and maxillofacial surgeons have not been able to establish a very mature surgical method for maxillary reconstruction, and maxillary defects still rely on the repair of prostheses. [0003] The repair of maxillofacial defects is a series of treatment processes, which mainly include the production and use of palatal guards, temporary stoppers and formal pros...

AI Technical Summary

Problems solved by technology

This method has some disadvantages: First, the maxillary bone defect causes the patient's oral and nasal cavity to perforate, so the impression is taken at the front end of the patient's airway, and the patient feels uncomfortable during the operation and there is a risk of aspiration of the impression material into the airway risk

Secondly, this method cannot completely remove the undercut of the defect site.

In addition, scar contracture and radiation therapy after maxillary tumor resection often lead to a reduction in the opening of the patient, sometimes less than 1 cm, which brings great difficulties to the traditional method of making impressions, and even makes it impossible.

However, the range of surgical resection pre-trimmed on the model before operation also has large errors, and the temporary or permanent prosthesis made by this method is often poor in suitability, and the clinical adjustment is complicated. However, the wide application of CAD / CAM technology in the biomedical field is increasingly causing Stomatologists' attention

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