Effect of overglazed and polished surface finishes on the compressive fracture strength of machinable ceramic materials
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概要
- 論文の詳細を見る
Controversy prevails over the effect of overglazing on the fracture strength of ceramic materials. Therefore, the effects of different surface finishes on the compressive fracture strength of machinable ceramic materials were investigated in this study. Plates prepared from four commercial brands of ceramic materials were either surface-polished or overglazed (n=10 per ceramic material for each surface finish), and bonded to flat surfaces of human dentin using a resin cement. Loads at failure were determined and statistically analyzed using two-way ANOVA and Bonferroni test. Although no statistical differences in load value were detected between polished and overglazed groups (p>0.05), the fracture load of Vita Mark II was significantly lower than those of ProCAD and IPS Empress CAD, whereas that of IPS e.max CAD was significantly higher than the latter two ceramic materials (p<0.05). It was concluded that overglazed and polished surfaces produced similar compressive fracture strengths irrespective of the machinable ceramic material tested, and that fracture strength was material-dependent.
- 日本歯科理工学会の論文
- 2010-11-01
著者
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OKIJI Takashi
Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Niiga
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FUKUSHIMA Masayoshi
Department of Oral Health and Welfare, Niigata University Faculty of Dentistry
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Okiji Takashi
Division Of Cariology Operative Dentistry And Endodontics Department Of Oral Health Science Niigata
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ASAI Tetsuya
Division of Cariology, Operative Dentistry and Endodontics, Department of Oral Health Science, Niiga
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KAZAMA Ryunosuke
Removable Partial Denture Prosthodontics, Department of Masticatory Function Rehabilitation, Divisio
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Fukushima Masayoshi
Department Of Oral Health And Welfare Faculty Of Dentistry Niigata University
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Asai Tetsuya
Division Of Cariology Operative Dentistry And Endodontics Department Of Oral Health Science Niigata
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Okiji Takashi
Division Of Cariology Operative Dentistry And Endodontics Department Of Oral Health Science Niigata
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Kazama Ryunosuke
Removable Partial Denture Prosthodontics Department Of Masticatory Function Rehabilitation Division
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Fukushima Masayoshi
Department of Operative Dentistry and Endodontics,Niigata University School of Dentistry
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