Cracks formed by Vickers indentation adjacent to the interface in bonded dental ceramics with various marginal angles
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概要
- 論文の詳細を見る
The objective of this study was to assess the influence of the ceramic marginal angle on the length and nature of indentation cracks in ceramics near the ceramic/resin bonded interface. Disks of a leucite-reinforced ceramic or a diopside-based glass-ceramic bonded to a resin composite were sectioned so that the ceramic marginal angles were 45, 60, and 90°. Vickers indentations were placed in the ceramic at various distances from the bonded interface. The lengths of the indentation cracks running near parallel to the interface were measured and the orientation of crack propagation was characterized. The crack length and orientation were significantly affected by the distance from the interface and by the marginal angle, respectively. The crack length extended as the distance from the interface was shortened. Smaller marginal angles resulted in more oblique cracks. The toughness of the ceramic affected the indentation crack length, shape, and direction.
- 日本歯科理工学会の論文
- 2011-05-01
著者
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Yamamoto Takatsugu
Department Of Internal Medicine School Of Medicine Teikyo University
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MOMOI Yasuko
Department of Operative Dentistry, Tsurumi University School of Dental Medicine
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Momoi Yasuko
Department Of Operative Dentistry School Of Dental Medicine Tsurumi University
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Swain Michael
Biomaterials Science Research Unit Faculty Of Dentistry University Of Sydney
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NISHIDE Akihito
Department of Operative Dentistry, Tsurumi University School of Dental Medicine
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Nishide Akihito
Department Of Operative Dentistry Tsurumi University School Of Dental Medicine
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