Is chlorhexidine-methacrylate as effective as chlorhexidine digluconate in preserving resin dentin interfaces?

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• 作者：Manar Abu Nawareg^a ; ^b ; Dina Elkassas^c ; Ahmed Zidan^d ; ^e ; Dalia Abuelenain^a ; Tariq Abu Haimed^a ; Ali H. Hassan^f ; Ayaka Chiba^g ; Thorsten Bock^h ; Kelli Ageeⁱ ; David H. Pashleyⁱ ; ^{dpashley@gru.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Dentin ; Bond strength ; Nanoleakage ; Chlorhexidine digluconate ; Chlorhexidine-methacrylate
• 刊名：Journal of Dentistry
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：45
• 期：Complete
• 页码：7-13
• 全文大小：701 K

文摘

The aim of the current study was to evaluate the effect of 2% CHX and 2% CHX-methacrylate compared to the resin–dentin bonds created by a two-step etch-and-rinse adhesive system after 24 h, 6 min and 12 min.

absSec_2">Methods

ar0050">Microtensile bond strengths and interfacial nanoleakage within resin–dentin interfaces created by Adper Single Bond 2, with or without CHX or CHX-methacrylate pre-treatment for 30 s on acid-etched dentin surfaces, were evaluated after 24 h, 6 min and 12 min of storage in distilled water at 37 °C.

absSec_3">Results

ar0055">Twelve months of storage resulted in a significant decrease in microtensile bond strength in the control group, and significant increases in silver nanoleakage. In contrast, Single Bond 2 + CHX, and to a greater extent CHX-methacrylate, significantly reduced the rate of deterioration of resin–dentin interfaces over the 12 min water storage period, in terms of bond strength.

absSec_4">Conclusions

ar0060">Similar to Single Bond 2 + CHX, Single Bond + CHX-methacrylates reduced the degradation of resin-bonded interfaces over a 12 month storage period. Thus it can be concluded that Single Bond 2 + CHX-methacrylate may be important to improve durability of bonded interfaces and therefore, prolong the life span of adhesive restorations.

absSec_5">Clinical significance

ar0065">Although CHX primers have been shown to enhance the durability of etch-and-rinse adhesives, that protection is lost after 2 h. The use of CHX-methacrylate should last much longer since it may copolymerize with adhesive monomers, unlike CHX.