title: Clinical evaluation of marginal fracture of amalgam restorations: one-year report.
abstract: Fourteen dental amalgam alloys were used in this study. After 1 year, amalgam restorations were evaluated for fracture at the margins. The clinical results indicated that Dispersalloy, Indiloy, a high-copper blend by Syntex, Cluster, and Unison had the least marginal failure. This was followed by Premalloy, Cupralloy, Tytin, Cupralloy ESP, and Contour. Velvalloy and Sybraloy and Orosphere II were the third major grouping with Summalloy having the most fracture at the margins. Different batches of the same alloy performed similarly. The correlation between creep and ridit means (fracture at the margins) was not found to be statistically significant.
authors.forename: J W
authors.initials: JW
authors.lastname: Osborne
authors.forename: S J
authors.initials: SJ
authors.lastname: Friedman
mesh_terms: D003723:Dental Amalgam; D003763:Dental Leakage / Q000175:diagnosis; D003793:Dental Restoration, Permanent; D005069:Evaluation Studies as Topic; D006801:Humans; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors
chemical_list: D003723:Dental Amalgam