Bonding to dentin as a function of air-stream temperatures for solvent evaporation.
This study evaluated the influence of solvent evaporation conditions of acid-etching adhesives. The medium dentin of thirty extracted human third molars was exposed and bonded to different types of etch-and-rinse adhesives: 1) Scotchbond Multi-Purpose (SBMP) ; water-based; 2) Adper Single Bond 2 (SB) ; ethanol/water-based, and 3) Prime & Bond 2.1 (PB) ; acetone-based. Solvents were evaporated at air-drying temperatures of 21ºC or 38ºC. Composite buildups were incrementally constructed. After storage in water for 24 h at 37ºC, the specimens were prepared for bond strength testing. Data were analyzed by two-way ANOVA and Tukey's test (5%). SBMP performed better when the solvents were evaporated at a higher temperature (p < 0.05). Higher temperatures did not affect the performance of SB or PB. Bond strength at room temperature was material-dependent, and air-drying temperatures affected bonding of the water-based, acid-etching adhesive.
Department of Operative Dentistry, School of Dentistry, Catholic University of Brasília, DF, Brazil.
Andréia Aquino
AA
Marsiglio
Júlio César Franco
JC
Almeida
Leandro Augusto
LA
Hilgert
Paulo Henrique Perlatti
PH
D'Alpino
Fernanda Cristina Pimentel
FC
Garcia
D000134:Acid Etching, Dental; D000388:Air; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003804:Dentin / Q000737:chemistry*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D012997:Solvents / Q000737:chemistry*; D013499:Surface Properties; D013718:Tensile Strength; D013997:Time Factors; D014835:Volatilization
D003188:Composite Resins; D017220:Dentin-Bonding Agents; D012997:Solvents