Effects of adhesive temperature on the early and 6-month dentin bonding

Reis, Alessandra; Klein-Júnior, Celso Afonso; Accorinte, Maria de Lourdes Rodrigues; Grande, Rosa Helena Miranda; Santos, Celso Bilynkievycz dos; Loguercio, Alessandro D.

doi:10.1016/j.jdent.2009.06.007

« Previous Next »Journal of Dentistry
Volume 37, Issue 10 , Pages 791-798, October 2009

Effects of adhesive temperature on the early and 6-month dentin bonding

Alessandra Reis
- School of Dentistry, Department of Restorative Dentistry, University Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
- Corresponding author at: Universidade Estadual de Ponta Grossa – Mestrado em Odontologia, Rua Carlos Cavalcanti, 4748, Bloco M, Sala 64A – Uvaranas, Ponta Grossa 84030-900, Paraná, Brazil. Tel.: +55 49 3554 4452; fax: +55 49 3551 2004.
Celso Afonso Klein-Júnior
- School of Dentistry, Department of Dentistry, University Luterana do Brasil, Cachoeira do Sul, RS, Brazil
Maria de Lourdes Rodrigues Accorinte
- School of Dentistry, University Brás Cubas, São Paulo, SP, Brazil
Rosa Helena Miranda Grande
- School of Dentistry, Department of Dental Materials, University of São Paulo, São Paulo, SP, Brazil
Celso Bilynkievycz dos Santos
- School of Dentistry, Department of Restorative Dentistry, University Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
Alessandro D. Loguercio
- School of Dentistry, Department of Restorative Dentistry, University Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil

Received 19 February 2009; received in revised form 6 June 2009; accepted 11 June 2009. published online 19 June 2009.

Abstract

Objectives

The aim of this study was to test the effect of adhesive temperature on the bond strength to dentin (μTBS) and silver nitrate uptake (SNU) of an ethanol/water (Adper Single Bond 2 [SB]) and an acetone-based (Prime&Bond 2.1 [PB]) etch-and-rinse adhesive system.

Methods

The bottles of each adhesive were kept in various temperatures (5°C, 20°C, 37°C and 50°C) for 1h previously to its application in the occlusal demineralized dentin of 40 molars. Bonded sticks (0.8mm²) were tested in tension (0.5mm/min) immediately (IM) or after 6 months (6M) of water storage. Two bonded sticks from each hemi-tooth were immersed in silver nitrate and analyzed by SEM. Data were analyzed by two-way repeated measures ANOVA and Tukey's test (α=0.05).

Results

No significant difference in μTBS was detected for both adhesives at 5°C and 20°C. The highest bond strength for PB was observed in the 37°C group while for SB it was in the 50°C. Significant reductions of bond strengths were observed for PB at 37°C and SB at 50°C after 6M of water storage. Silver nitrate deposition was seen in all hybrid layers, irrespective of the group. Lower silver nitrate deposition (water trees) in the adhesive layer was seen for PB and SB at higher temperatures.