TY - JOUR
T1 - Is chlorhexidine-methacrylate as effective as chlorhexidine digluconate in preserving resin dentin interfaces?
AU - Abu Nawareg, Manar
AU - Elkassas, Dina
AU - Zidan, Ahmed
AU - Abuelenain, Dalia
AU - Abu Haimed, Tariq
AU - Hassan, Ali H.
AU - Chiba, Ayaka
AU - Bock, Thorsten
AU - Agee, Kelli
AU - Pashley, David H.
N1 - Funding Information:
This work was funded by the Deanship of Scientific Research (DSR) , King Abdulaziz University (KAU), Jeddah, Saudi Arabia, under grant no. ( 1-165-35-HiCi ) and its title is “Prevention of degradation of resin–dentin bonded interfaces”. The authors, therefore, gratefully acknowledge the technical and financial support of DSR, KAU. Dr. Pashley was supported, in part, as the Hi-Ci Scholar of the Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia. The authors also thank Ivoclar Vivadent for synthesizing CHX-methacrylate. The authors are grateful to Mrs. Michelle Barnes for her outstanding secretarial support.
Publisher Copyright:
© 2015 Elsevier Ltd
PY - 2016/2/1
Y1 - 2016/2/1
N2 - 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 24 h, 6 min and 12 min. 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 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. 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 12 min 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 2 h. The use of CHX-methacrylate should last much longer since it may copolymerize with adhesive monomers, unlike CHX.
AB - 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 24 h, 6 min and 12 min. 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 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. 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 12 min 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 2 h. The use of CHX-methacrylate should last much longer since it may copolymerize with adhesive monomers, unlike CHX.
KW - Bond strength
KW - Chlorhexidine digluconate
KW - Chlorhexidine-methacrylate
KW - Dentin
KW - Nanoleakage
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U2 - 10.1016/j.jdent.2015.11.002
DO - 10.1016/j.jdent.2015.11.002
M3 - Article
C2 - 26593780
AN - SCOPUS:84956562161
SN - 0300-5712
VL - 45
SP - 7
EP - 13
JO - Journal of Dentistry
JF - Journal of Dentistry
ER -