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[Effect of chlorhexidine on the bonding effect of self-acid adhesive to pre-treatment dentin]
De-Bao Jing1, Li-Qin Wang, Yu-Feng Hu
1Department of Stomatology, Gongli Hospital, Shanghai Pudong New Area.Shanghai 200135, China.
Purpose:
To evaluate the effect of 2% chlorhexidine(CHX) on the self-etching adhesive to dentin.
Methods:
Fifty carious free molars were selected to expose the flat dentin surface. The specimens were bonded with composite resin by self-etching adhesive ,which were pretreated by 2% CHX for 0, 15, 30, 45 and 60 s. The microtensile bond strength (μTBS) and scanning electron microscope(SEM) were evaluated before and after thermocycling. SPSS 19.0 software package was used for statistical analysis.
Results:
μTBS of the 45 and 60s-CHX pretreated group had significant difference before thermocycling, significantly higher than the control group(P<0.05). The 60s-CHX pretreated group showed significant greater μTBS than the control group after thermocycling(P<0.05).
Conclusions:
2%CHX pretreatment can improve the bonding strength of the self-etching adhesive, and slow down the aging progress of bonding interface.
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