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Journal of Dental Materials and Techniques، جلد ۱۴، شماره ۳، صفحات ۱۴۱-۱۴۶
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عنوان انگلیسی Effect of Er:YAG laser versus chlorhexidine disinfection on dentin bond strength of two adhesive systems
چکیده انگلیسی مقاله Objective: This study evaluated the effects of 2% chlorhexidine (CHX) and Er:YAG laser on the shear bond strength (SBS) of resin composite to affected dentin using two adhesive systems.Methods: Sixty extracted third molars were randomly assigned to three disinfection groups (control, 2% CHX, and Er:YAG laser). Each disinfection group was further divided into two subgroups based on the adhesive system used (an etch-and-rinse or a universal self-etch system), yielding a total of six groups (n=10). After caries excavation, dentin surfaces were treated according to the assigned disinfection and adhesive protocols. The resin composite was then applied to the treated surface using a cylindrical mold. Samples underwent 10,000 thermal cycles, followed by shear bond strength (SBS) testing and failure mode analysis. Data were analyzed using two-way ANOVA and chi-square test at the significance level of P < 0.05.Results: ANOVA revealed no significant differences in mean bond strength among the disinfection groups with either adhesive system (P > 0.05).  However, the etch-and-rinse adhesive showed significantly higher SBS compared to the universal self-etch adhesive across all disinfection groups (P < 0.05). Chi-square analysis revealed no significant differences in failure modes among the groups (P = 0.71).Conclusions: Disinfection of affected dentin with either Er:YAG laser or 2% CHX does not reduce the bond strength of adhesive systems. The etch-and-rinse adhesive consistently achieved higher SBS than the universal adhesive after dentin disinfection, suggesting that it may be preferred for clinical use.
کلیدواژه‌های انگلیسی مقاله Affected dentin, Bond Strength, Chlorhexidine, disinfection, Erbium, Laser
نویسندگان مقاله | Farnaz Farahat
Department of Operative Dentistry, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.


| Abdolrahim Davari
Department of Operative Dentistry, School of Dentistry, North Khorasan University of Medical Sciences, Bojnord, Iran.


| Zahra Ghasemzadeh
Department of Operative Dentistry, School of Dentistry, North Khorasan University of Medical Sciences, Bojnord, Iran.
نشانی اینترنتی https://jdmt.mums.ac.ir/article_26660.html
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