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Composite Resin Bond Strength to Caries-Affected Dentin Contaminated With 3 Different Hemostatic Agents Pubmed



Khoroushi M1 ; Hosseinishirazi M2 ; Farahbod F3 ; Keshani F1
Authors
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Authors Affiliations
  1. 1. Dental Materials Research Center, Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Iran
  2. 2. Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Iran
  3. 3. Department of Maxillofacial Radiology, School of Dentistry, Babol University of Medical Sciences, Mazandaran, Iran

Source: General Dentistry Published:2016


Abstract

Bonding of composite resins to sound and cariesaffected dentin in cervical areas may necessitate the use of hemostatic agents to control sulcular fluid and hemorrhage. The aim of this in vitro study was to evaluate the bond strengths of a self-etching adhesive system to sound and caries-affected dentin after the use of 3 different hemostatic agents. Composite resin cylinders were bonded to 48 caries-affected and 48 sound dentin surfaces in 8 groups. Groups 1-4 utilized caries-affected dentin: group 1, uncontaminated control; 2, ViscoStat; 3, ViscoStat Clear; and 4, trichloroacetic acid (TCA). Groups 5-8 utilized sound dentin: group 5, uncontaminated control; 6, ViscoStat; 7, ViscoStat Clear; and 8, TCA. The hemostatic agents were applied for 2 minutes and rinsed. After 500 rounds of thermocycling, shear bond strength tests were carried out. Data were analyzed with 1- and 2-way analyses of variance, t test, and post hoc Tukey tests at a significance level of P < 0.05. Bond strength was significantly influenced by dentin type (F = 38.23; P = 0.0001) and hemostatic agent (F = 6.32; P = 0.001). Furthermore, groups 2 and 6 (ViscoStat) showed significantly lower bond strength values than the control groups (groups 1 and 5) in both affected and sound dentin (P = 0.043 and P = 0.009, respectively) . Within the limitations of this study, the bond strength of composite resin to caries-affected dentin was significantly reduced compared to bond strength to sound dentin. Among the studied hemostatic agents, ViscoStat resulted in a greater decrease in dentin bond strength. Contamination of both sound and caries-affected dentin with hemostatic agents decreased composite resin bond strength. Of the 3 hemostatic agents used, ViscoStat Clear appeared to have the least detrimental effect on bond strength. © Copyright 2016 by the Academy of General Dentistry.
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