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Journal of Dental Materials and Techniques، جلد ۲، شماره ۱، صفحات ۲۱-۲۸
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عنوان انگلیسی Microleakage under Orthodontic Metal Brackets Bonded with Three Different Bonding Techniques with/without Thermocycling
چکیده انگلیسی مقاله Introduction: The aim of this study was to compare the microleakage of beneath the orthodontic brackets bonded with 3 different bonding techniques and evaluate the effect of thermocycling. Methods: One hundred and twenty premolars were randomly divided into 6 groups, received the following treatment: group 1: 37% phosphoric acid gel+Unite primer+Unite adhesive, group 2: 37% phosphoric acid gel+ Transbond XT primer+Transbond XT adhesive, group 3: Transbond plus Self Etching Primer (TSEP)+Transbond XT adhesive. Groups 4, 5, and 6 were similar to groups 1, 2, and 3, respectively. Evaluation of microleakage was done following to thermocycling test. After bonding, the specimens were sealed with nail varnish except for 1 mm around the brackets and then stained with 0.5% basic fuchsine. The specimens were sectioned at buccolingual direction in 2 parallel planes and evaluated under a stereomicroscope to determine the amount of microleakage at bracket-adhesive and adhesive-enamel interfaces from gingival and occlusal margins. Results: Microleakage was observed in all groups, and increased significantly after thermocycling at some interfaces of Unite adhesive group and conventional etching+Transbond XT adhesive group, but the increase was not significant in any interface of TSEP group. With or without thermocycling, TSEP displayed more microleakage than other groups. In most groups, microleakage at gingival margin was significantly higher than occlusal margin. Conclusion: Thermocycling and type of bonding technique significantly affect the amount of microleakage.
کلیدواژه‌های انگلیسی مقاله Adhesive, Microleakage, orthodontic bracket, thermocycling
نویسندگان مقاله برهمن سبزواری | berahman sabzevari
department of orthodontics, faculty of dentistry, rafsanjan university of medical sciences, rafsanjan, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی رفسنجان (Rafsanjan university of medical sciences)

براتعلی رمضان زاده | barat ali ramazanzadeh
department of orthodontics, faculty of dentistry, mashhad university of medical sciences, mashhad, iran

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

سید مصطفی معظمی | saied mostafa moazzami
department of operative and aesthetic dentistry, faculty of dentistry, mashhad university of medical sciences, mashhad, iran

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

آرمین شریفی | armin sharifi
dentist, private practice, mashhad, iran
نشانی اینترنتی http://jdmt.mums.ac.ir/article_151.html
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