Fogorvosi szemle, 1999 (92. évfolyam, 1-12. szám)

1999-04-01 / 4. szám

Dr. Kőhalmi, T., dr. Gorzó, L, dr. Mari, A., dr. Boda, K., dr. Nagy, K.: In vitro comparison of marginal adaptation of different filling materials. II. Effect of the site and method of preparation

In a two-month in vitro experiment we examined the marginal adaptation of ten dental materials. Fifty Class II restaurations were prepared extending to the cemento-enamel junction.

The cavities of the composite restaurations were bevelled at the vestibulo-occlusal and -approximal enamel margins, on the other side enamel and gingival margins were prepared conventionally. The specimens were thermocycled and examined with SEM. The microleakage was measured at the vestibulo-occlusal and -approximal tooth-filling junction, where adhesive technique was used, and at the gingival, oroocclusal and -approximal margins, which were not bevelled before.

The obviously most important conclusion of the study is, that in the case of deep Class II cavities the amalgam has a better adaptation at the gingival margin than the examined composite resins.