[Effect of cavity design on the marginal fit of Class I composite fillings].
16 butt joint (Group A) and 16 beveled (Group B) class I cavities were prepared in extracted molars and filled with two hybrid composite resin materials using the enamel etching technique. Replicas were obtained before and after thermocycling (TC) and a computerized quantitative margin analysis was carried out in the SEM. Statistical analysis revealed significant differences (p less than 0.01) between the two groups only after TC. Group B showed significantly less marginal openings than Group A (A: 50.7%, B: 8.4%) after TC. Class I cavities for hybrid composite resin materials should be beveled.
Bergmann
P
P
Fachbereich Zahn-, Mund- und Kieferheilkunde der FU Berlin.
Noack
M J
MJ
Roulet
J F
JF
D000134:Acid Etching, Dental; D003188:Composite Resins; D003737:Dental Cavity Preparation; D003763:Dental Leakage / Q000517:prevention & control; D003793:Dental Restoration, Permanent; D006801:Humans
D003188:Composite Resins
Der Einfluss der Kavitätenform auf das Randverhalten von Klasse-I-Kompositfüllungen.