Biomedical subjects
Publications and source records attributed to E S Lopes.
Testing soldering investments of different thermal expansions established that an acceptable dimensional change in a three-unit fixed partial denture occurs with an investment which expands at 0.70% to 0.72%.
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Proximal retentive grooves significantly increase the strength of amalgam restorations in Class II cavities. There were no remarkable differences that could have clinical significance between sharp or rounded axiopulpal line angles and rounded or rounded and sloped pulpal walls. Chromium-cobalt dies are effective for tests of fracture strength of amalgam restorations.
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