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  • Title: A comparison of the marginal and internal adaptation of titanium and gold-platinum-palladium metal ceramic crowns.
    Author: Valderrama S, Van Roekel N, Andersson M, Goodacre CJ, Munoz CA.
    Journal: Int J Prosthodont; 1995; 8(1):29-37. PubMed ID: 7710622.
    Abstract:
    The marginal and internal adaptation of metal ceramic crowns fabricated by electrical discharge machining and conventional metal ceramic alloys were compared. The crowns were cemented using zinc phosphate cement, embedded in epoxy resin, and sectioned in two planes: diagonal and buccolingual. The crowns were then measured at nine sites. The results showed that there were no statistical differences between the external marginal opening of the titanium and the gold-platinum-palladium crowns. The overall marginal discrepancies for the restorations in this study were 61 microns (+/- 34 microns) for the titanium metal ceramic crowns and 47 microns (+/- 17 microns) for the gold-platinum-palladium metal ceramic crowns.
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