有機質フィラーを配合した光重合型ダイレクトボンディング材に関する基礎的研究
スポンサーリンク
概要
- 論文の詳細を見る
Experimental BisGMA/TEGDMA-based visible light-activated direct bonding adhesives (EDBAs) with different volumes (40,50,60 and 70 vol%) of polymethyl methacrylate (PMMA) filler, which were softer than inorganic filler, were prepared in order to reduce enamel damage during bracket removal. The effect of PMMA filler content on the physical properties (viscosity, water sorption, Knoop hardness, flexural strength, bond strength with and without metal, and ceramic brackets to etched enamel, debonding strength and abrasive wear) of EDBAs was investigated. Their physical properties were compared with those of Kurasper F (CF) and Transbond (TB). The results were as follows : 1. The viscosity increased relative to filler content increase. Meanwhile, water sorption and Knoop hardness were unchanged by the filler content. The viscosity and Knoop hardness were statistically lower than those of CF and TB, but the amount of water sorption was higher than that of CF and TB. 2. The flexural strengths decreased relative to the filler content increase. They were statistically lower than those of CF and TB. 3. The bond strengths with and without metal, and ceramic brackets were statistically lower than those of CF and TB, regardless of storage conditions. There were significant relationships between the bond strengths with and without metal, and ceramic brackets and flexural strengths after immersion in water for 1 day. 4. The debonding strengths of EDBAs containing 50 vol%, and 60 vol% filler were comparable after immersion in water for 1 day and 30 days; however, they were statistically lower than those of CF and TB, regardless of storage conditions. 5. EDBAs with 60 vol% filter showed greater abrasive wear than that with 50 vol% filler. Both EDBAs showed greater abrasive wear than CF and TB. This study suggested that EDBAs have sufficient bond strengths and bonding durability, and also have potential debonding properties suitable for bracket removal without enamel damage.
- 福岡歯科大学学会の論文
- 1997-06-30
著者
関連論文
- 福岡歯科大学附属病院矯正歯科における20年の患者の統計的観察
- 先天性多数歯欠損症例の一治験例
- 学童期に第1小臼歯を抜歯された成人矯正の1治験例
- 齲蝕により大臼歯の抜歯を余儀なくされた上下顎前突の1治験例
- 1.学童期に第1小臼歯を抜歯された成人矯正の治験例(第103回福岡歯科大学学会例会)
- 有機質フィラーを配合した光重合型ダイレクトボンディング材に関する基礎的研究
- 有機質フィラーを配合した光重合型ダイレクトボンディング材に関する基礎的研究