Modification of 4-META/MMA-TBB Resin for Safe Debonding of Orthodontic Brackets : Influence of the Addition of Degradable Additives or Fluoride Compound
スポンサーリンク
概要
- 論文の詳細を見る
The purpose of this study was to evaluate the performance of modified 4-META/MMA-TBB resin cements (Superbond C&B) in terms of debonding orthodontic brackets easily and safely from enamel without the loss of proper bracket bond strength. Poly(DL-lactide-co-glycolide)(PLGA), calcium fluoride (CaF_2), or α-tricalcium phosphate (α-TCP) was added to the polymer powder of 4-META/MMA-TBB resin, and the shear bond strength of orthodontic brackets to human enamel using modified resins was measured before and after 10,000-cycle thermal cycling test between 5℃ and 55℃. The modified resins tended to provide lower bond strength compared with the original 4-META/MMA-TBB resin. However, α-TCP- or CaF_2-modified resin showed no significant differences in bond strength before and after thermal cycling. Moreover, there was a tendency of more residual resin remaining on the tooth surface after debonding, thereby suggesting a lower risk of enamel fracture. In conclusion, α-TCP- or CaF_2-modified 4-META/MMA-TBB resin seemed to allow easy and safe debonding of orthodontic brackets without loss of proper bracket bond strength.
- 日本歯科理工学会の論文
著者
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HAYAKAWA Tohru
Department of Dental Biomaterial, Nihon University School of Dentistry at Matsudo
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Kasai Kazutaka
Departments of Orthodontics, Nihon University School of Dentistry at Matsudo
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Kasai Kazutaka
Department Of Orthodontics Graduate School Of Dentistry At Matsudo Nihon University
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Hayakawa Tohru
Department Of Appilied Biology Faculty Of Textile Science Kyoto Institute Of Technology
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KAWABATA Rihito
Department of Orthodontics, Nihon University Graduate School of Dentistry at Matsudo
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Kawabata Rihito
Department Of Orthodontics Nihon University Graduate School Of Dentistry At Matsudo
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Hayakawa Tohru
Department Of Dental Materials Nihon University School Of Dentistry At Matsudo
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