Subject(s)
Aluminum Oxide , Aluminum , Crowns , Dental Porcelain , Platinum , Cementation , Dental Alloys , Denture Design , Humans , Stress, Mechanical , Surface PropertiesSubject(s)
Chromium Alloys , Dental Soldering , Argon , Dental Porcelain , Denture, Partial , Electron Probe Microanalysis , Humans , Metallurgy , Radiography , Surface Properties , Tensile StrengthABSTRACT
This study evaluated the compressive strengths of Renaissance foil and porcelain-fused-to-metal crowns on polycarbonate test dies. Both crown types were veneered with feldspathic porcelain. The compressive strength of the PFM crowns, 1895 +/- 317 N, was statistically higher than that of the Renaissance foil crowns, 1060 +/- 89 N. Comparison of the Renaissance foil crown's compressive strength to published biting forces indicated that the Renaissance crown should function without difficulty.
Subject(s)
Crowns , Dental Alloys , Dental Porcelain , Dental Bonding , Dental Stress Analysis , Denture Design , Humans , Stress, MechanicalSubject(s)
Crowns , Dental Alloys , Dental Porcelain , Aluminum Silicates , Denture Design , Stress, Mechanical , Surface PropertiesABSTRACT
Eleven full veneer crowns were directly constructed on brass stylized dies. Crown marginal openings and vertical heights were measured before and after cementation with zinc phosphate cement. The following results were established. The marginal opening of complete veneer gold crowns increased during cementation. The vertical heights of well fitting crowns also increased significantly after cementation.
