Resumo

CASSELLI, Denise Sá Maia et al. Evaluation of methods for measurement of marginal adaptation and cement thickness on indirect restorations. RFO UPF [online]. 2011, vol.16, n.3, pp. 307-311. ISSN 1413-4012.

Objective: the objective of this work is to compare methods used to measure marginal adaptation and cement thickness on inlay indirect restorations. Materials and method: Twenty-four third human molars were prepared and inlay restorations were manufactured by resin composite. Half of samples was used to evaluate, before the restoration luting, the marginal adaptation and the remaining samples were luted and the cement thickness was measured. Measurements were made at cervical, inter-proximal and occlusal regions, using three methods: stereoscopic, optic and scanning electronic microscopes. The last method evaluated the occlusal region only. Results: For the marginal adaptation evaluation, there was no difference between stereoscopic and optical microscopes. When the cement thickness was measured, the stereoscopic microscopy presented the lowest values in the inter-proximal region. The scanning electronic microscopy presents the lowest values. Conclusions: In order to measure the adaptation of parts in a preparation both stereoscopic and light microscopy can be used. To evaluate the cementation line SEM is the best method.

Palavras-chave : Marginal adaptation.; Cementation.; Dental restoration.; Permanent.; Methods..