Restor Dent Endod.  2013 May;38(2):73-78. 10.5395/rde.2013.38.2.73.

Effect of different air-drying time on the microleakage of single-step self-etch adhesives

• Moosavi H
• Forghani M
• Managhebi

• KMID: 1995462
• DOI: http://doi.org/10.5395/rde.2013.38.2.73

Abstract

OBJECTIVES
This study evaluated the effect of three different air-drying times on microleakage of three self-etch adhesive systems.
MATERIALS AND METHODS
Class I cavities were prepared for 108 extracted sound human premolars. The teeth were divided into three main groups based on three different adhesives: Opti Bond All in One (OBAO), Clearfil S3 Bond (CSB), Bond Force (BF). Each main group divided into three subgroups regarding the air-drying time: without application of air stream, following the manufacturer's instruction, for 10 sec more than manufacturer's instruction. After completion of restorations, specimens were thermocycled and then connected to a fluid filtration system to evaluate microleakage. The data were statistically analyzed using two-way ANOVA and Tukey-test (alpha = 0.05).
RESULTS
The microleakage of all adhesives decreased when the air-drying time increased from 0 sec to manufacturer's instruction (p < 0.001). The microleakage of BF reached its lowest values after increasing the drying time to 10 sec more than the manufacturer's instruction (p < 0.001). Microleakage of OBAO and CSB was significantly lower compared to BF in all three drying time (p < 0.001).
CONCLUSIONS
Increasing in air-drying time of adhesive layer in one-step self-etch adhesives caused reduction of microleakage, but the amount of this reduction may be dependent on the adhesive components of self-etch adhesives.

Keyword

Air-drying; Microleakage; Self-etch adhesive

MeSH Terms

Adhesives
Bicuspid
Dentin-Bonding Agents
Filtration
Humans
Resin Cements
Rivers
Tooth
Adhesives
Dentin-Bonding Agents
Resin Cements

Figure

• 

  Figure 1 Schematic illustration of the fluid filtration apparatus used to measure the microleakage of the resin composite restorations bonded with the assigned adhesives in this study.

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