[Impressions in conservative dentistry]

In conservative dentistry, indirect restorations are rather seldom choosen because direct restorations give relatively good results and fit well to conditions of social dentistry. If an indirect restoration is to be realised, it has to be decided if it will be an inlay, an onlay or a crown and which material will be used. A one step putty wash technique impression is the best for registering inlay-onlay preparations. Most often, preparations are few and grouped and allow the dual arch technique. By this technique, it is possible to register in one time the preparations, the antagonists and their occlusal relation. A complete description of this technique is given in a case report.