The effect of gingival wall location on the marginal seal of class II restorations prepared with a flowable bulk-fill resin-based composite

P. Segal, V. Candotto, A. Ben-Amar, M. Eger, S. Matalon, D. Lauritano, Z. Ormianer

Research output: Contribution to journalArticlepeer-review

Abstract

SureFil SDR is a flowable resin-based composite that allows a single incremental bulk placement. The marginal seal of SureFil SDR at the gingival margins of class II restorations located apical to the cemento-enamel-junction (CEJ) has not been adequately evaluated compared to those located occlusal to the CEJ. Forty class II cavities were prepared in human molars. The gingival margins of 20 preparations were located 0.5 mm occlusal to the CEJ, and the other 20 preparations were located 0.5 mm apical to the CEJ. The cavities surfaces were bonded with XenoV dental adhesive and filled with SDR in one bulk increment up to 4 mm, after which they were covered with CeramX. The teeth were subjected to thermo- and load-cycling, and their gingival margins were exposed to 0.5% basic-fuchsin solution. The specimens were sectioned mesio-distally and scored for microleakage. A Wilcoxon test for pairwise comparison was performed to determine significance. Dye penetration was observed in 30% of the 20 restorations with cavo-surface margins located occlusal to the CEJ and in 55% of the 20 restorations with cavo-surface margins located apical to the CEJ. The bulk-fill flowable resin base SureFil SDR with XenoV dental adhesive provided a better marginal seal in class II restorations with gingival margins above the CEJ compared to restorations with gingival margins below the CEJ. SDR should not be recommended for class II cavity preparations with gingival margins located below the CEJ.

Original languageEnglish
Pages (from-to)11-18
Number of pages8
JournalJournal of Biological Regulators and Homeostatic Agents
Volume32
Issue number2
StatePublished - 1 Mar 2018

Keywords

  • Bulk-fill
  • Flowable resin-based composite
  • Marginal seal
  • SureFil SDR

Fingerprint

Dive into the research topics of 'The effect of gingival wall location on the marginal seal of class II restorations prepared with a flowable bulk-fill resin-based composite'. Together they form a unique fingerprint.

Cite this