Selective masking for thin indirect restorations: Can the use of opaque resin affect the dentine bond strength of immediately sealed preparations?

Pascal Magne, Maria Paula Paranhos, Julia Hehn, Elisa Oderich, Luis Leonildo Boff

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Purpose: Evaluate the dentine bond strength using different methods of application of opaque resins to mask dentine discoloration. Materials and methods: Dentine was exposed on 21 extracted molars which were assigned to 3 groups: G1: immediate dentine sealing (IDS). G2: IDS + opaque. G3: IDS with adhesive resin mixed with opaque. After 1 week, teeth were restored and beams were fabricated for microtensile testing. Optical microscopy was used to analyse the failure mode. Results: Bond strength mean values were statistically different: G1 55.20 MPa > G2 45.79 MPa > G3 18.96 MPa. Failure modes were mostly adhesive for G1 and G3. G2 presented mostly mixed failures. Conclusion: The use of opaque resin to mask discoloured dentine results in a decrease of bond strength.

Original languageEnglish (US)
Pages (from-to)707-709
Number of pages3
JournalJournal of Dentistry
Volume39
Issue number10
DOIs
StatePublished - Oct 2011

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Keywords

  • Dentine bond strength
  • Discoloration
  • Opaque resin
  • Porcelain veneers

ASJC Scopus subject areas

  • Dentistry(all)

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