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Journal of Dental Research, Dental Clinics, Dental prospects، جلد ۹، شماره ۱، صفحات ۱-۵
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عنوان انگلیسی The effect of different concentrations of chlorhexidine gluconate on the compressive strength of mineral trioxide aggregate
چکیده انگلیسی مقاله Background and aims. Substituting chlorhexidine (CHX) for water has been shown to enhance antimicrobial activity of mineral trioxide aggregate (MTA). The purpose of this study was to compare the compressive strength of MTA mixed with distilled water, 0.12% and 0.2% chlorhexidine. Materials and methods. MTA was mixed according to manufacturer’s instructions in group I (n = 20). In groups II & III, 0.12% and 0.2% CHX liquid was substituted for water, respectively. Samples were condensed with moderate force into 20 tubes with 1.5 × 5 mm dimensions and were allowed to set for 72 hours at 37°C in 100% humidity. After being removed from the molds, their compressive strength was determined using Instron testing machine. Each group was di-vided into two subgroups according to the time of testing (at 72 hours, and one week). Fractured surfaces of 4 specimens in each group were then evaluated under Scanning Electron Microscope (SEM) to determine their microstructure. One-way ANOVA, Tukey, and paired sample t-test was used for statistical analysis. P < 0.05 was set as significant. Results. There was no significant difference between three groups in terms of their compressive strength after 72 hours. However, the compressive strength of group II was significantly higher than group I (P = 0.034) and group III (P = 0.021) after one week. Crystalline microstructure was similar in all groups. Conclusion. Substitution of 0.012% chlorhexidine for water significantly increased the compressive strength of MTA at 1 week without significant change in crystalline structure.
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نویسندگان مقاله مریم بیدار | maryam bidar


ندا اسلامی | neda eslami
assistant professor of orthodontics,dental research center, mashhad university of medical sciences

سازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (Mashhad university of medical sciences)

ندا نقوی | neda naghavi


زهره فصیحی | zohreh fasihi


نگین عطاران مشهدی | negin attaran mashhadi


نشانی اینترنتی http://dentistry.tbzmed.ac.ir/joddd/index.php/joddd/article/view/1002
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/183/article-183-319688.pdf
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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