Fracture resistance of zirconia surveyed crowns with four different occlusal rest seat designs.

Surveyed crowns without rest seats had a higher fracture resistance than crowns with rest seats Surveyed crowns with interproximal rest seats presented the lowest fracture resistance among all rest seat designs. Crowns with disto-occlusal rest seats, disto-occlusal extended rest seats, and continuous rest seats displayed similar fracture resistance. This article is protected by copyright. All rights reserved.