The use of easily debondable orthodontic adhesives with ceramic brackets
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概要
- 論文の詳細を見る
We experimentally produced an easily debondable orthodontic adhesive (EDA) containing heat-expandable microcapsules. The purpose of this in vitro study was to evaluate the best debondable condition when EDA was used for ceramic brackets. Shear bond strengths were measured before and after heating and were compared statistically. Temperatures of the bracket base and pulp wall were also examined during heating. Bond strengths of EDA containing 30 wt% and 40 wt% heat-expandable microcapsules were 13.4 and 12.9 MPa, respectively and decreased significantly to 3.8 and 3.7 MPa, respectively, after heating. The temperature of the pulp wall increased 1.8–3.6°C after heating, less than that required to induce pulp damage. Based on the results, we conclude that heating for 8 s during debonding of ceramic brackets bonded using EDA containing 40 wt% heat-expandable microcapsules is the most effective and safest method for the enamel and pulp.
- 2011-09-01
著者
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Tsuruoka Takashi
Department Of Internal Medicine Ehime Prefectural Minamiuwa Hospital
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Tsuruoka Takashi
Department Of Orthodontics Nihon University School Of Dentistry
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Shimizu Noriyoshi
Department Of Orthodontics Nihon University School Of Dentistry:division Of Clinical Research Dental
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Shimizu Noriyoshi
Department Of Orthodontics Nihon University School Of Dentistry
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Namura Yasuhiro
Department Of Orthodontics Nihon University School Of Dentistry:division Of Clinical Research Dental
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RYU Chiyako
Department of Orthodontics, Nihon University School of Dentistry
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HAMA Tomohiko
Department of Orthodontics, Nihon University School of Dentistry
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KAJI Kaori
Nihon University School of Dentistry
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Ryu Chiyako
Department Of Orthodontics Nihon University School Of Dentistry
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Hama Tomohiko
Department Of Orthodontics Nihon University School Of Dentistry
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Namura Yasuhiro
Department Of Orthodontics Nihon University School Of Dentistry
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Tsuruoka Takashi
Department of Cardiology, Kita Medical Association Hospital
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