Method of manufacturing of bridges with adhesive fixation.

Abstract

Clinical durability of adhesive restorations is largely determined by the quality of marginal adaptation of orthopedic structures to hard tooth tissues. One of the factors that affect the marginal adaptation is the adhesive strength. In order to improve the mechanical fixation of bridges to the hard tissues of abutment teeth, various irregularities and roughness’s (microretention points) formed on the metal surface during its processing in a sandblasting machine are used. However, all of the above methods require significant preparation of the vestibular part of the tooth, since the retention points have convex outlines outward, so the layer of the facing mass must be of sufficient thickness to prevent the retention points from being visible. In addition, electrochemical etching and coating with a layer of ellipsoidal particles of appropriate dimensions by electroplating does not ensure reliable development of the relief structure at the adhesive- structure interface and, as a result, reliable strength of the adhesive fixation of the orthopedic structure to the hard tissues of the abutment teeth. The aim of the study. To create a reliable method of manufacturing bridges with adhesive fixation to the supporting elements by developing a relief structure at the adhesive-structure area and using the latest fixation material.