低粘性コンポジットレジンの歯科理工学的性質と接着耐久性

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概要

• 論文の詳細を見る

• The purpose of this study was to examine the mechanical and physical properties and adhesion durability to bovine dentin of the flowable resin composites in comparison with those of conventional resin composites and glass ionomers. In this experiment, four flowable resin composites, two conventional resin composites and two glass ionomers were used. The consistency, thermal expansion coefficiency, compressive strength, diametral tensile strength, brittleness, Vickers hardness, elastic modulus and adhesion durability were examined. SEM observation on the adhesion interface was also perfomed. The results obtained were as follows: 1. Flowable resin composites had greater consistency and thermal expansion coefficiency as compared with those of conventional resin composites and glass ionomers. 2. Flowable resin composites had lower brittleness, hardness and elastic modulus as compared with those of conventional resin composites. 3. Adhesion durability of flowable resin composite was significantly lower as compared with those of conventional resin composites probably due to thermal cycle stress and cyclic impacted loading. 4. Adhesion durability of two-layered specimen of flowable + conventional resin composites to bovine dentin showed a similar behavior to that of one-bulk specimen of a conventional resin composite. 5. In the SEM observation on the adhesion interface, flowable resin composite looked more closely adhered to the dentin surface as compared with conventional resin composites. Consequently, it is recommended that flowable resin composite should be used at a site where masticatory force is not directly applied or be laminated with conventional resin composite.

• 奥羽大学の論文
• 2004-09-30

著者

• 金丸 充徳

  奥羽大学歯学部生体材料学講座

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• 低粘性コンポジットレジンの歯科理工学的性質と接着耐久性(第35回奥羽大学歯学会例会講演抄録,一般講演)
• 低粘性コンポジットレジンの歯科理工学的性質と接着耐久性

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