Comparison of load-fatigue testing of ceramic veneers with two different preparation designs.
The concept of tooth preparation for ceramic veneers remains controversial regarding whether the use of a palatal chamfer would affect the longevity of restorations. This study aimed to evaluate the load-fatigue testing of ceramic veneers using two different preparation designs-an incisal shoulder finish line with or without a palatal chamfer. A pressable ceramic veneer was bonded to the prepared maxillary central incisor using resin cement. The number of cycles until fatigue failure for each tooth-veneer specimen was recorded. Results revealed that using a palatal chamfer margin design significantly increased the fatigue failure cycle count.
Chaiyabutr
Yada
Y
Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, Washington 98109, USA. yada@koiscenter.com
Phillips
Keith M
KM
Ma
Polly S
PS
Chitswe
Kinsey
K
D003776:Dental Porcelain; D003799:Dental Stress Analysis; D003801:Dental Veneers; D006801:Humans; D007180:Incisor; D019279:Resin Cements; D019231:Tooth Preparation, Prosthodontic / Q000379:methods*
D019279:Resin Cements; D003776:Dental Porcelain