One-step impression technique adapted with addition silicone

Abstract

A quality molding is essential for the success of dental prosthesis manufacturing and its outcome is directly dependent on the dimensional stability, precision and flexibility of the impression materials as well as the technique used. Addition silicone is one of the most favored impression materials in dentistry. Its dimensional accuracy is superior to all other impression materials available in the market, being able to copy fine details of dental structures. Factors that influence the accuracy of a molding include proper material handling and the technique used. The aim of this paper was to report a modified molding technique that combines the qualities of one and two-step double viscosity molding techniques without adding time and cost. The technique consisted of accommodating the silicon heavy mass throughout the length of the stock tray by pressing it with fingers in the areas corresponding to the teeth forming a concave shape. Then the fluid silicone was added in the concavity area until it was completely filled. The adapted single step molding technique with addition silicone was effective, being easy to be performed in the clinical daily life. It makes possible to combine the advantage of the two-step molding technique in copying the details due to the predominance of fluid silicone and the advantage of the one-step technique in decreasing clinical time.