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A 30-month Clinical Evaluation of the Influence of Finishing and Size of Restoration on the Margin Performance of Five Amalgam Alloys
R.F. Birtcil, Jr
Department of Restorative Dentistry, University of California School of Dentistry, San Francisco, California 94143
R.B. Pelzner
Department of Operative Dentistry, University of California School of Dentistry, San Francisco, California 94143
M.M. Stark
Departmenet of Operative Dentistry and Oral Biology, University of California School of Dentistry, San Francisco, California 94143
The influence of finishing and size of the restoration on the margin performance of 286 Class II restorations using five amalgam alloys (Aristaloy, Dispersalloy, Oraloy, Sybraloy, and Tytin) was evaluated at 30 mo. When size of the restoration was considered, Dispersalloy displayed the best margin performance. Oraloy, Sybraloy, and Tytin were inferior to Dispersalloy and were grouped together. Aristaloy was inferior to all other alloys in the study. When the aspect of finishing was considered, Dispersalloy and Sybraloy evidenced excellent margin performance when unfinished. Aristaloy showed the worst margin performance of all the alloys in the study when unfinished, but showed remarkable improvement in margin performance when finished.
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Journal of Dental Research, Vol. 60, No. 12,
1949-1956 (1981)
DOI: 10.1177/00220345810600120501
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