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Journal of Dental Research, Dental Clinics, Dental prospects، جلد ۷، شماره ۳، صفحات ۱۵۷-۱۶۳
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عنوان انگلیسی Effect of blood contamination on marginal adaptation and surface microstructure of mineral trioxide aggregate: a SEM study
چکیده انگلیسی مقاله Background and Aims: In various clinical situations, mineral trioxide aggregate (MTA) may come into direct contact with blood. The aim of the present study was to evaluate the effect of exposure to blood on marginal adaptation and surface microstructure of MTA. Materials and Methods: Thirty extracted human single-rooted teeth were used in this study. Standard root canal treatment was carried out. Root-ends were resected, and retrocavities were prepared. The teeth were randomly divided into the following two groups (n=15): In group 1, the internal surface of the cavities was coated with blood. Then, the cavities were filled with MTA. The roots were immersed in molds containing fresh blood. In group 2, the aforementioned procedures were performed except that synthetic tissue fluid (STF) was used instead of fresh blood. After incubation, the specimens were prepared for scanning electron microscopic analysis. To assess the marginal adaptation, “gap perimeter” and “maximum gap width” were measured, respectively. The surface microstructure was also examined at higher magnifications. Independent samples t-test and Mann-Whitney U test were used to analyze data. Results: Maximum gap width and gap perimeter in the blood-exposed group were significantly larger than those in the STF-exposed group (p< 0.01). In the blood-exposed group, the crystals tended to be more rounded and less angular compared with the STF-exposed group, and there was a general lack of needle-like crystals. Conclusions: Exposure to blood during setting has a negative effect on marginal adaptation of MTA, and blood-exposed MTA has a different surface microstructure compared to STF-exposed MTA.
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نویسندگان مقاله امین سالم میلانی | amin salem milani
assistant professor, dental and periodontal disease research center, faculty of dentistry, tabriz university of medical sciences, tabriz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (Tabriz university of medical sciences)

سعید رحیمی | saeed rahimi
professor of endodontics, department of endodontics, faculty of dentistry, tabriz university of medical sciences, tabriz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (Tabriz university of medical sciences)

محمد froughreyhani | mohammad froughreyhani
associate professor, department of endodontics, faculty of dentistry, tabriz university of medical sciences, tabriz, iran.

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (Tabriz university of medical sciences)

مهدی وحید پاکدل | mahdi vahid pakdel
post-graduate student, department of prosthodontics, faculty of dentistry, tabriz university of medical sciences, tabriz, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی تبریز (Tabriz university of medical sciences)

نشانی اینترنتی http://dentistry.tbzmed.ac.ir/joddd/index.php/joddd/article/view/595
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article
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