[The cast structure after vacuum-pressure casting and centrifugal casting].
Evaluation of polished sections revealed the following: 1. Grain size in marginal areas of the crown is, in general, smaller than it is in the occlusal region. 2. Grain size varies depending on the casting method applied. Differences in hardness were found only to a limited extent. They were not always in line with the grain structure. This phenomenon deviating from the rule cannot satisfactorily be explained. The piping distribution was in accordance with observations made so far.
D003442:Crowns / Q000592:standards*; D003735:Dental Casting Technique / Q000379:methods*; D003764:Dental Materials; D006244:Hardness; D006801:Humans; D010316:Particle Size; D013674:Technology, Dental
D003764:Dental Materials
Das Gussgefüge nach Vakuum-Druck-Guss und nach Schleuderguss