[In vitro comparison of marginal adaptation of different filling materials. II. Effect of the site and method of preparation on the marginal adaptation].
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.
Köhalmi
T
T
Szent-Györgyi Albert Orvostudományi Egyetem Fogászati és Szájsebészeti Klinika, Szeged.
Gorzó
I
I
Mari
A
A
Boda
K
K
Nagy
K
K
D003723:Dental Amalgam / Q000494:pharmacology; D003764:Dental Materials; D003793:Dental Restoration, Permanent / Q000295:instrumentation* / Q000379:methods; D003794:Dental Restoration, Temporary / Q000295:instrumentation* / Q000379:methods; D005881:Gingiva / Q000187:drug effects*; D006801:Humans; D066298:In Vitro Techniques; D010519:Periodontium / Q000187:drug effects*
D003764:Dental Materials; D003723:Dental Amalgam