Marginal accuracy of complete crowns made from alternative casting alloys.
The marginal accuracy of complete cast crowns made from five alternative casting alloys was measured and compared with that of crowns made from the traditional type III high-gold alloy. The alternative alloys studied were low-gold-palladium, high palladium, silver-palladium, nickel-chrome-molybdenum, and copper-aluminum. The findings indicated that Ag-Pd alloy crowns exhibited the best marginal accuracy among the alternative alloys tested. However, their marginal discrepancy value was still slightly higher than that of crowns made of type III high-gold alloy. Conversely, Ni-Cr-Mo alloy crowns exhibited the poorest marginal accuracy.
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Loma Linda University, School of Dentistry, Calif.
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D002484:Cementation; D002858:Chromium Alloys / Q000737:chemistry; D003442:Crowns; D003722:Dental Alloys / Q000737:chemistry; D003735:Dental Casting Technique; D003776:Dental Porcelain; D003779:Denture Design / Q000295:instrumentation; D006047:Gold Alloys / Q000737:chemistry; D006801:Humans; D010165:Palladium; D012834:Silver; D013499:Surface Properties; D014716:Vertical Dimension
D002858:Chromium Alloys; D003722:Dental Alloys; D006047:Gold Alloys; D003776:Dental Porcelain; D012834:Silver; D010165:Palladium