PubMed · 3299188
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1987. [Kulzer Silicoater methods].. https://pubmed.ncbi.nlm.nih.gov/3299188/
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Changes in the surfaces of glazed porcelain were evaluated with the use of a profilometer and a scanning electron microscope after ultrasonic scaling and periodontal curettage. Thirty samples of glazed porcelain-fused-to-metal were divided into two experimental zones, and the two scaling treatments were performed on each sample. Measurements of surface roughness of porcelain were made before and after instrumentation for both periodontal prophylaxis procedures. The statistical analysis of the differences in surface changes as evaluated on the profilometer indicated that the roughness alterations from both procedures were not statistically significant; however, the qualitative or subjective evaluation of scanning electron micrographs and profile tracings revealed differences between glazed and instrumented porcelain surfaces.
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Replacement of amalgam restorations may lead to more destruction of sound dental tissue, is often a time-consuming chair procedure, and it does not always provide a favorable risk/benefit balance for the patient. This article reviews the clinical alternative of repairing instead of completely replacing old amalgam restorations. During a 2-year period, 45 repaired restorations were monitored every 6 months by direct (clinical) and indirect (color slides and stone casts) methods. Findings of this study reveal broad clinical success when based on proper indications.