[Technological bases for rational impression technics for fixed partial dentures]

Starting from the general properties of silicone-elastomer impression materials, the author outlines problems concerning their adequate processing. He deals in particular with studies on the mixing time, the value of the change in shape and the dimensional behaviour of "Stafanat zähplastisch" and "Stafanat leichtfliessend" that demonstrate the effects of different working conditions.