SOME ASPECTS OF RETRACTION THE GINGIVAL SULCUS

Abstract

In order to achieve an optimal fit between the crown and the margin formed below the gingival margin, a good mapping of the space behind the margin is required. This can be accomplished in a variety of ways. At various stages, general dentists and prosthodontists apply gum retraction across the board on a daily basis. Gum retraction was first described in 1941 by Thompson. Today, a large assortment of retraction cords is presented on the material market. One of the main requirements forhigh-precision impressions is a clear display of the gingival sulcus around the abutment teeth. To obtain high-quality impressions, it is necessary to ensure the unimpeded position of the impression material in this area, which is ensured by retraction. With the generalized form of increased abrasion of the hard tissues of the teeth, all teeth or most of them are subject to restoration of the anatomical shape, therefore it is important to choose a retraction method that would not only allow obtaining ahigh-quality impression, but also minimize its negative effect. Since 1975, PubMed and Google Scholar have searched for studies on gingival tissue management prior to impression creation on fixed dentures. The conclusions were extracted and summarized by us. Gingival retraction methods are divided intomechanical, chemical or surgical types. This article discusses the various methods of gingival retraction for subsequent double-layer impressions.