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Journal of Dental Materials and Techniques، جلد ۶، شماره ۳، صفحات ۱۰۸-۱۱۶
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عنوان انگلیسی The Effect of Lithium Disilicate Ceramic Thickness and Translucency on Shear Bond Strength of Light-cured Resin Cement
چکیده انگلیسی مقاله Introduction: To achieve acceptable clinical performance, a ceramic veneer must be bonded to enamel by well-polymerized resin cement. Among different factors, thickness and translucency of the ceramic may affect the resin cement polymerization. Thus, the current study evaluated the effect of the thickness and translucency of lithium disilicate ceramic on light-cured resin cement bond strength to enamel. Methods: In this laboratory study, 208 sound bovine incisors were equally divided into 16 groups (n = 13). The lithium disilicate ceramic cubes in four thicknesses (0.4, 0.6, 0.8 and 1 mm) with four translucencies (high and medium opaque, high and low translucent) were fabricated and bonded to prepared enamel surfaces using a light-cured translucent resin cement according to manufacturer recommendations. After 5000 cycles of thermocycling, the bonded specimens were placed in a universal testing machine and loaded to the point of fracture. To determine the mode of failure, each sample was observed under a stereomicroscope. Data were recorded and analyzed by Shapiro-Wilk test and two-way analysis of variance (ANOVA). Results: The ceramic thickness and translucency could not significantly affect shear bond strength (SBS) of resin cement to enamel (p = 0.17 and p = 0.097, respectively).  The Adhesive and ceramic cohesive failures were reported as the maximum and minimum mode of failure, respectively. Conclusion: The SBS of the light-cured resin cement bonding to enamel and lithium disilicate ceramic was not affected by the translucency of ceramics having a thickness of less than 1 mm.    
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نویسندگان مقاله محمد جواد مقدس | mohammad javad moghaddas
department of restorative and cosmetic dentistry, school of dentistry, mashhad university of medical sciences, mashhad, iran

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

حمیده سادات محمدی پور | hamideh sadat mohammadipour
dental materials research center, mashhad university of medical sciences, mashhad, iran department of restorative and cosmetic dentistry, school of dentistry, mashhad university of medical sciences, mashhad, iran

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

رویا امیری daluyi | roya amiri daluyi
dental materials research center, mashhad university of medical sciences, mashhad, iran department of restorative and cosmetic dentistry, school of dentistry, mashhad university of medical sciences, mashhad, iran

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

آذین جهان نیا | azin jahan nia
student of dentistry, mashhhad university of medical science, school of dentistry, mashhhad,iran
نشانی اینترنتی http://jdmt.mums.ac.ir/article_8938.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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