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Journal of Dental Research, Dental Clinics, Dental prospects، جلد ۱۰، شماره ۳، صفحات ۱۴۸-۱۵۴
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Comparison of multiple rebond shear strengths of debonded brackets after preparation with sandblasting and CO2 laser
چکیده انگلیسی مقاله Background. Failure of orthodontic bracket bonds is a common occurrence during orthodontic treatment. Different tech-niques have been suggested in the literature to remove resin residues from the bracket bases and enamel surfaces to prepare the surfaces again after debonding. This study attempted to compare multiple rebond shear strengths (SBS) of debonded brackets following preparation with sandblasting and CO2 laser. Methods. The brackets were bonded on 30 human and bovine maxillary central incisors using self-curing composite resin. SBS was measured using Hounsfield testing machine. The brackets were rebonded for two other times after composite resin residues on their surfaces were removed, either with air abrasion or CO2 laser. The debonded brackets and enamel surfaces were also evaluated after each debonding procedure under a stereomicroscope in order to determine adhesive remnant index (ARI). SBS of debonded brackets after each step were compared between sandblast and CO2 laser groups. Results. We observed significant differences in SBS values between pre-recycling and first (P = 0.04), second (P = 0.007) and third recycling (P = 0.007) with laser. Recycling with sandblasting resulted in a decrease in SBS after the first and second recycling procedure; however, the SBS increased after the third recycling procedure, with no significant differences. Conclusion. SBS of brackets after recycling with sandblasting and laser beams was not significantly different, and both were at a favorable level. However, repeating the recycling procedure with sandblasting resulted in more favorable SBS compared to laser.
کلیدواژه‌های انگلیسی مقاله Bond strength,CO2 laser,rebonding,sandblasting
نویسندگان مقاله مژگان کچویی | mojgan kachoei


مازیار اسماعیلی | maziar esmaieli


سهند ریخته گران | sahand rikhtegaran


mahnoud پورغزنین | mahnoud pourghaznein


امیر محمدی | amir mohammadi


سجاد شیرازی | sajjad shirazi


نشانی اینترنتی http://dentistry.tbzmed.ac.ir/joddd/index.php/joddd/article/view/1274
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/183/article-183-319623.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Original Article
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