Long-term in vitro adhesion of polyalkenoate-based adhesives to dentin

Ana Sezinando, Jorge Perdigão, Laura Ceballos

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Purpose: To study the influence of a polyalkenoate copolymer (VCP) on the immediate (24 h) and 6-month dentin bonding stability of VCP-based adhesives, using microtensile bond strength (μTBS), nanoleakage (NL), and ultramorphological analyses (FE-SEM). Materials and Methods: Eighty-four caries-free molars were randomly assigned to seven adhesives: Clearfil SE Bond (CSE, Kuraray Noritake); Adper Single Bond Plus (SB, 3M ESPE); SB without VCP (SBnoVCP, 3M ESPE); Scotchbond Universal Adhesive applied as a etch-and-rinse adhesive (SBU_ER); SBU without VCP applied as an etch-and-rinse adhesive (SBUnoVCP_ER); SBU applied as a self-etch adhesive (SBU_SE, 3M ESPE); SBU without VCP applied as a self-etch adhesive (SBUnoVCP_SE, 3M ESPE). Half of the beams were tested after 24 h, and the other half was aged in water for 6 months prior to testing. For each tooth/evaluation time, two beams were randomly selected for NL analysis. Statistical analyses of μTBS results were performed using two-way ANOVA, Tukey's post-hoc tests, and Student's t-test for paired data (α= 0.05). Nanoleakage was statistically analyzed using the Kruskal-Wallis and Mann-Whitney tests, with Wilcoxon's test for paired data. For FE-SEM, four caries-free molars were assigned to each of the seven groups. Dentin disks were restored and cross sectioned into halves. One half was observed at 24 h, and the other at 6 months. Results: The highest 6-month mean μTBS was obtained with SBU_SE/SBUnoVCP_SE and SBUnoVCP_ER. SBUnoVCP_SE resulted in greater silver deposition at 6 months. FE-SEM observations showed that CSE and SBU_SE specimens resulted in a submicron hybrid layer without signs of degradation at 6 months. Conclusions: VCP may contribute to the long-term bonding stability of VCP-based adhesives.

Original languageEnglish (US)
Pages (from-to)305-316
Number of pages12
JournalJournal of Adhesive Dentistry
Volume19
Issue number4
DOIs
StatePublished - Jan 1 2017

Fingerprint

Dentin
Adhesives
In Vitro Techniques
Silver
Analysis of Variance
Tooth
Students
Water

Keywords

  • Dental materials
  • Dentin bonding
  • Microscopy
  • Tensile strength

Cite this

Long-term in vitro adhesion of polyalkenoate-based adhesives to dentin. / Sezinando, Ana; Perdigão, Jorge; Ceballos, Laura.

In: Journal of Adhesive Dentistry, Vol. 19, No. 4, 01.01.2017, p. 305-316.

Research output: Contribution to journalArticle

Sezinando, Ana ; Perdigão, Jorge ; Ceballos, Laura. / Long-term in vitro adhesion of polyalkenoate-based adhesives to dentin. In: Journal of Adhesive Dentistry. 2017 ; Vol. 19, No. 4. pp. 305-316.
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abstract = "Purpose: To study the influence of a polyalkenoate copolymer (VCP) on the immediate (24 h) and 6-month dentin bonding stability of VCP-based adhesives, using microtensile bond strength (μTBS), nanoleakage (NL), and ultramorphological analyses (FE-SEM). Materials and Methods: Eighty-four caries-free molars were randomly assigned to seven adhesives: Clearfil SE Bond (CSE, Kuraray Noritake); Adper Single Bond Plus (SB, 3M ESPE); SB without VCP (SBnoVCP, 3M ESPE); Scotchbond Universal Adhesive applied as a etch-and-rinse adhesive (SBU_ER); SBU without VCP applied as an etch-and-rinse adhesive (SBUnoVCP_ER); SBU applied as a self-etch adhesive (SBU_SE, 3M ESPE); SBU without VCP applied as a self-etch adhesive (SBUnoVCP_SE, 3M ESPE). Half of the beams were tested after 24 h, and the other half was aged in water for 6 months prior to testing. For each tooth/evaluation time, two beams were randomly selected for NL analysis. Statistical analyses of μTBS results were performed using two-way ANOVA, Tukey's post-hoc tests, and Student's t-test for paired data (α= 0.05). Nanoleakage was statistically analyzed using the Kruskal-Wallis and Mann-Whitney tests, with Wilcoxon's test for paired data. For FE-SEM, four caries-free molars were assigned to each of the seven groups. Dentin disks were restored and cross sectioned into halves. One half was observed at 24 h, and the other at 6 months. Results: The highest 6-month mean μTBS was obtained with SBU_SE/SBUnoVCP_SE and SBUnoVCP_ER. SBUnoVCP_SE resulted in greater silver deposition at 6 months. FE-SEM observations showed that CSE and SBU_SE specimens resulted in a submicron hybrid layer without signs of degradation at 6 months. Conclusions: VCP may contribute to the long-term bonding stability of VCP-based adhesives.",
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