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Romanian Journal of Oral Rehabilitation 2010,Numarul 2 Study of the Impact of Technological Process on the Surface Rougness of Dental Alloys

Study of the Impact of Technological Process on the Surface Rougness of Dental Alloys

Ruxandra Voinea, Roxana Constantinescu, Maria Ursache

Introduction. The materials used in restorative therapy are often involved in the induction of oral pathologies as singular factors in the mechanical effects of direct trauma of the periodontal structures or cytotoxic effect of its components, but more often by surface appearance. The aim of the study is to evaluate surface qualities of restorative material influenced by the technological processing. Material and method. Have been studied microscopic surface qualities of the 4 types of metal alloys available on the market, from which the samples were made, what were subjected to processing and polishing with abrasive material on a textile, grain with variable results to study. Metallographic microscope indicates improving surface quality after each stage of processing and polishing, the final preservation of defects, attributed to the structural heterogeneity from filling microparticles with temper differently for each structural component. Conclusions. A polishing and finishing of the restorative material is often difficult, leading to the emergence of retention areas, more or less irregular, which would influence the mechanical and biological qualities of the alloy.

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