Comparison of the fracture strengths of ceramometal crowns versus several all-ceramic crowns.
Fracture resistance to forces applied to the incisal edges of four types of anterior crowns was tested. Ceramometal crowns fractured at significantly higher values (720 psi) than the all-ceramic crowns (approximately 360 psi). No significant difference was found among the fracture values of the Dicor crowns, the aluminous porcelain jackets, and the crowns fabricated from Dicor veneered with aluminous body and incisal porcelain.
Miller
A
A
Department of Fixed Prosthodontics, Baylor College of Dentistry, Dallas, Texas.
Long
J
J
Miller
B
B
Cole
J
J
D000537:Aluminum Oxide / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry*; D003442:Crowns; D003776:Dental Porcelain / Q000737:chemistry*; D003799:Dental Stress Analysis; D003779:Denture Design; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties
C047475:Dicor ceramic; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D010984:Platinum; D000537:Aluminum Oxide