[Marginal adaptation of different esthetic filling materials under the effect of heat treatment]. / Különbözö esztétikus tömöanyagok széli zárásának változása hökezelés hatására.

The aim of the study was to examine the marginal adaptation of six tooth coloured restoratives to the tooth hard tissues before and after heat treatment considering the filling method and the placement of the cavity margin. The study showed that 1) the composite marginal adaptation was better with enamel bonding technique than with total bonding technique; 2) the microleakage was less before heat treatment; 3) the best fit was at the occlusal surface and the worst at the gingival tooth-filling junction with the composites; 4) non-composites showed the best adaptation at the approximal enamel-filling junction and the worst at the occlusal surface; 5) the best marginal adaptation could be achieved with Charisma and SpectrumTPH among the composites, and Dyract among the non-composites.

[In vitro comparison of marginal adaptation of different filling materials. II. Effect of the site and method of preparation on the marginal adaptation]. / Különbözö tmöanyagok széli zárásának in vitro összehasonlítása. II. A preparálás helyének és módjának a hatása a széli zárásra különbözó tömöanyagok esetén.

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

[In vitro comparison of marginal adaptation of various filling materials. I. Effect of the filling material on marginal adaptation]. / Különbözó tömóanyagok széli zárásának in vitro összehasonlítása. I. Az alkalmazott tömóanyag hatása a széli zárásra.

In a two-month in vitro experiment cervical marginal adaptation was examined in relation to the preparation, filling method and restorative material. Fifty Class II cavities were prepared in fifty extracted sound human premolar and molar teeth extending to the approximal cement-enamel junction. The cavities to receive composite restorations were bevelled at the vestibulo-occlusal and -approximal enamel margins, the other aspects of the cavity enamel and gingival margins at the cement-enamel junction being prepared conventionally. The cavities for amalgam were prepared and filled conventionally. The specimens were cycled in different buffer solutions and temperature, modelling possible variations in the oral environment and examined with SEM. The results were analysed using ANOVA. The best marginal adaptation among the composites was achieved with Charisma, Estilux Posterior, Durafil and Prisma AP. H at the bevelled enamel margins, the worst marginal fit was with Heliomolar and Polofil. It was concluded, that adhesive technique reduces, but does not eliminate marginal leakage.