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Journal of Dentomaxillofacil Radiology, Pathology and Surgery، جلد ۴، شماره ۳، صفحات ۱۵-۲۲
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عنوان انگلیسی Effects of Carbamide Peroxide Bleaching Gel on Color of Silorane- and Methacrylate-based Resin Composites
چکیده انگلیسی مقاله Introdouction: Bleaching has become a common treatment for improving the appearance of natural teeth. However, the need to protect dental restorations from bleaching agent exposure is inevitable, as these agents may change the color of restorative materials by oxidation. Filtek P90 composite resin has recently been introduced with the aim of decreasing polymerization shrinkage. The purpose of this study was to compare the color changes of silorane- and methacrylate-based resin composites after exposure to various carbamideperoxide regimens. Materials and methods: Sixty-four disk-shaped specimens (10 × 2 mm) of a microhybrid composite, Z250, and a siloranebased composite, P90, were prepared and divided into four subgroups (n = 8). An unbleached group was used as a control, while the remaining specimens in the three subgroups were bleached with 10%, 16%, and 22% carbamide peroxide for 14 days. The color was measured with a spectrophotometer using Commission International de I’Eclairage L*, a*, and b* color scale. The data were analyzed using ANOVA, the t-test, and Tukey’s HSD test. Results: Color differences between bleaching and baseline values (&DeltaE) were < 3.3 for all the groups. Z250 and P90 resin composites showed color changes after bleaching with 10%, 16%, and 22% carbamide peroxide, but the changes were insignificant (Z250: p = 0.323, P90: p = 0.136). Conclusion: The color changes were not clinically evident in the sample groups. For both the Z250 and P90 specimens, no statistically significant differences in color were noted.
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نویسندگان مقاله بهناز اسماعیلی | behnaz esmaeili
dental materials research center, department of operative dentistry, faculty of dentistry, babol university of medical sciences, babol, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (Babol university of medical sciences)

غزاله احمدی زنوز | ghazaleh ahmadizenouz
dental materials research center, department of operative dentistry, faculty of dentistry, babol university of medical sciences, babol, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (Babol university of medical sciences)

فایزه khazaeipoul | faezeh khazaeipoul
faculty of dentistry, babol university of medical sciences, babol, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (Babol university of medical sciences)

یاسمن سامانی | yasaman samani
department of operative dentistry, faculty of dentistry, babol university of medical sciences, babol, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (Babol university of medical sciences)

همت قلی نیا | hemmat gholinia
health research institute, babol university of medical sciences, babol, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی بابل (Babol university of medical sciences)

نشانی اینترنتی http://3dj.gums.ac.ir/browse.php?a_code=A-10-1-81&slc_lang=en&sid=en
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