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Journal of Dental Materials and Techniques، جلد ۵، شماره ۴، صفحات ۱۸۹-۱۹۵
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عنوان انگلیسی Comparison Of Chlorhexidine 2% And Sodium Hypochlorite 5% As Rewetting Agents On Resin- Dentin Micro Tensile Bond Strength
چکیده انگلیسی مقاله Resin- dentin interface hydrolysis is one of the greatest problems in restorative dentistry, Because of collagenolytic and proteolytic activity of dentin enzymes. The aim of this study was to compare the effect of CHX 2% and NaOCl 5% as rewetting agent on resin-dentin micro tensile bond strength.Methods: 45 extracted, human caries-free third molar teeth were collected. After exposing of superficial dentin, etching and rinsing of dentin were done. Specimens were divided into 3 equal groups. In group 1, after drying of dentin, CHX 2% was used as rewetting agent for 60 seconds. In group2, NaOCl 5% used as rewetting agent for 120 sec and in group 3 (control), blot dry technique with water was used for substrate. Adhesive system (SingleBond , 3M ESPE , USA) and composite build up (Filtek Z250 ,3M ESPE , USA)) were applied for all groups. After 6 month storage, μTBS measured for hourglass-shaped specimens. Specimens loaded for micro tensile bond strength until fracture occurred. Results: Micro tensile bond strength of group 1 significantly was higher than other groups (52.67±6.862). There was no significant difference between group 2(18.59 ± 6.081) and group 3(28.84± 6.231). (P= 0.094). Conclusion: CHX acts as matrix metalloproteinases inhibitor and by preventing dentin collagen degradation can preserve the bond strength after 6 months.
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نویسندگان مقاله ملیحه کرابی | malihe karrabi
assistant professor, department of operative dentistry, school of dentistry, gilan university of medical sciences, gilan, iran

سازمان اصلی تایید شده: دانشگاه گیلان (Guilan university)

عبدالرحیم داوری | abdol rahim davari
professor, department of operative dentistry, social determinants of oral health research center, dental school, shahid sadoughi university of medical sciences, yazd, iran


علیرضا دانش کاظمی | alireza danesh kazemi
associated professor, department of operative dentistry, social determinants of oral health research center, dental school, shahid sadoughi university of medical sciences, yazd, iran
نشانی اینترنتی http://jdmt.mums.ac.ir/article_7617.html
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