[Gdansk combined crown with occlusal rest. 2. Clinical assessment of the combined crown with occlusal rest on the base of cast crown].

Thirty patients receiving 53 combined crowns with occlusal rest are described. The results are presented in tables. Poor marginal contact was found in about 20% and only 25% of the crowns penetrated into the gingival pouch at a distance over 0.

[Gdansk combined crown with occlusal rest. 1. Clinical and laboratory preparation of combined crown with occlusal rest on the basis of cast crown].

The combined crown used since many years in the Prosthetic Laboratory, Institute of Stomatology, Medical Academy in Gdańsk contains an occlusal rest basis of a cast crown (the metal part is of a gold alloy or chromium-nickel steel, with veneer of acrylateor Colorstat) provides, owing to a special preparation of the abutment tooth and laboratory procedure, full stabilization of the crown, protection of parodontium and good maintenance of the veneer which plays a cosmetic role in this type of crown. The combined crowns with occlusal rest are particularly suitable for supporting bridgeworks. They may be applied onto devitalized or live teeth since they require less extensive grinding of teeth.