Restaurations esthétiques postérieures en technique directe

Abstract

The purpose of this chapter is to report a novel technique for the placement of aesthetic composite resin restorations in posterior teeth. The advantages of direct composite restorations in posterior teeth include class I and small to moderate class II restorations in premolar and molar teeth. All posterior composites should be placed under rubber dam, with the provision of such restorations involving four phases of treatment: cavity preparation and hybridization of the dentin to effectively protect the pulpo dentin complex; pre-wedging and placement of thin sectional, precontoured metal matrix to facilitate the formation of proximal contact points; placement of a chemically self cured flowable composite in the base of the cavity to speed up the restorative procedure and limit stresses associated with polymerisation shrinkage; restoration of the occlusal portion using the "composite up" technique. This technique involves a multi increment approach in which each increment is light cured for 3 seconds. With the occlusal portion placed, the surface of the restoration is finished by applying and light curing (40 s) a thin layer of resin sealant to reduce microcracks. With this operative procedure, we answer to the biological, functional and aesthetic problems.