Effect of temporary cements on the bond strength of a resin cement to a pre-hybridized dentin

Authors

  • Marcio Ferreira Lima Universidade Federal de Sergipe
  • Carolina Menezes Marciel Universidade de São Paulo
  • Ayla Macyelle de Oliveira Correia Universidade Federal de Sergipe
  • Sandro Griza Universidade Federal de Sergipe
  • Adriano Augusto Melo de Mendonça Universidade Federal de Sergipe

DOI:

https://doi.org/10.14393/BJ-v33n1a2017-34668

Keywords:

Dental materials, Resin cements, Bond strength, Immediate dentin sealing

Abstract

This study assessed the bond strength of a resin cement when Immediate Sealed Dentin (ISD) was contaminated by different temporary cements applying a microshear test. Forty-eight fragments of third molar crowns were mounted in acrylic resin and worn until the dentin was exposed. The substrates were sealed with a 3-step conventional adhesive system and divided into four groups (n=12): Control (without temporary cement) and three groups that used different temporary cements - Provy, RelyX Temp NE, and Provitemp. The temporary cements were removed after 7 days of storage. Resin cement RelyX ARC was applied to the contaminated substrates. Microshear bond strength was evaluated using a universal testing machine (0.5 mm/min). Data was analyzed with ANOVA and a Dunnett post-hoc test (p<0.05). Additionally, three samples from each group were prepared for scanning electron microscope analysis. Means and standard deviations of microshear bond strength (MPa) were 17.96±1.65, 16.70±1.43, 20.43±1.30 and 33.75±4.72 for Control, Provy, RelyX Temp, and Provitemp, respectively. Statistically significant difference was observed between the Control and Provitemp samples (p=0.0002). Adhesive failures were dominant (50%), followed by cohesive failures with cement (26%), and cohesive failures with dentin (24%). Residues of Provy and Provitemp were observed on the sealed dentin. Provitemp temporary cement sealing increased the microshear bond strength of the resin cement on dentin treated with IDS.

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Published

2017-02-09

How to Cite

LIMA, M.F., MARCIEL, C.M., CORREIA, A.M. de O., GRIZA, S. and MENDONÇA, A.A.M. de, 2017. Effect of temporary cements on the bond strength of a resin cement to a pre-hybridized dentin . Bioscience Journal [online], vol. 33, no. 1, pp. 247–256. [Accessed23 May 2022]. DOI 10.14393/BJ-v33n1a2017-34668. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/34668.

Issue

Section

Health Sciences