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

Abstract：

OBJECTIVES: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 24h, 6min and 12min. METHODS: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 30s on acid-etched dentin surfaces, were evaluated after 24h, 6min and 12min of storage in distilled water at 37°C. RESULTS: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 12min water storage period, in terms of bond strength. CONCLUSIONS: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. CLINICAL SIGNIFICANCE:Although CHX primers have been shown to enhance the durability of etch-and-rinse adhesives, that protection is lost after 2h. The use of CHX-methacrylate should last much longer since it may copolymerize with adhesive monomers, unlike CHX.

journal_name

J Dent

journal_title

Journal of dentistry

authors

Abu Nawareg M,Elkassas D,Zidan A,Abuelenain D,Abu Haimed T,Hassan AH,Chiba A,Bock T,Agee K,Pashley DH

doi

10.1016/j.jdent.2015.11.002

subject

Has Abstract

pub_date

2016-02-01 00:00:00

pages

7-13

eissn

0300-5712

issn

1879-176X

pii

S0300-5712(15)30067-1

journal_volume

45

pub_type

杂志文章

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