An in vitro study of the effect of restorative technique on marginal leakage in posterior composites

I. F. Neiva, M. A.C. De Andrada, L. N. Baratieri, S. Monteiro, A. V. Ritter

Research output: Contribution to journalArticlepeer-review

Abstract

The purpose of this in vitro study was to compare marginal leakage of class 2 light-cured composite resin restorations, with different insertion and polymerization techniques. Fifty sound premolars extracted for prosthetic purposes were used in the study. Conservative class 2 (MOD) preparations were made in all teeth, with one proximogingival margin on enamel and the other on cementum. All the preparations and restorations were performed by the same operator utilizing the same restorative materials. After restoration the teeth were thermocycled and their gingival margins exposed to a dye. Results showed that the kind of matrix system had no significant influence upon the degree of marginal leakage on enamel. On cementum, oblique and horizontal incremental insertion and polymerization techniques using the collimator cone exhibited the least leakage, while the clear matrix band/reflective wedge technique presented the greatest leakage.

Original languageEnglish (US)
Pages (from-to)282-289
Number of pages8
JournalOperative dentistry
Volume23
Issue number6
StatePublished - Nov 1998

ASJC Scopus subject areas

  • Dentistry(all)

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