Técnicas de desplazamiento gingival en prótesis fija

Abstract

Gingival displacement is an important procedure with fabricating indirect restorations. Gingival displacement is relatively simple and effective when sulcus. The mechanical-chemical method using retraction cords of various sizes impregnated with various retraction chemicals is the most commonly employed retraction technique. Materials used for gingival retraction should satisfy the following criteria: 1. It must be effective: Use of medicament in a cord must result in enough lateral and vertical displacement of the gingival tissues with tissue shrinkage and control of hemorrhagic and gingival fluid to allow the dentist to make and adequate impression of the gingival finish line of the prepared tooth. 2. Use of the material should not cause significant irreversible tissue damage. 3. Use of the material should not produce potentially harmful systemic effects. No scientific evidence has established the superiority of one technique over others, so the choice of technique depends on the presenting clinical situation and operator preference.