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  • Title: [The abrasion of amalgam and composites in the lateral dental region].
    Author: Roulet JF, Mettler P, Friedrich U.
    Journal: Dtsch Zahnarztl Z; 1978 Mar; 33(3):206-9. PubMed ID: 274270.
    Abstract:
    In 41 patients class 11 cavities each of the lower jaw were filled with the materials Adaptic, Concise cap, Epoxydent or amalgam. The models made from impressions were systemically measured by a coordinate measuring machine according to a procedure determined by us (measuring error of this method about 15 micron). After one year the following abrasions were found: amalgam 18 micron +/- 58 micron, Adaptic 92 micron +/- 97 micron, Concise Cap 146 micron +/- 75 micron, Epoxydent 38 micron +/- 50 micron. Evaluation of the clinical examination showed that the materials Concise and Epoxydent were significantly inferior as regards border closure than amalgam and Adaptic. We determined further that a large percentage of composite filling showed visible discoloration of the borders (Adaptic 42%, Concise 55%, Epoxydent 80%). Many of the fillings were discolored after a year. Adaptic was highly significantly different with 31.6% discolored fillings to both other materials (Concise 79%, Epoxydent 78.4%).
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