Influence of the flexural modulus of prefabricated and experimental posts on the fracture strength and failure mode of composite resin cores

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著者

    • KUMAGAE Naosuke
    • Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
    • KOMADA Wataru
    • Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
    • FUKUI Yuji
    • Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
    • OKADA Daizo
    • Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
    • TAKAHASHI Hidekazu
    • Oral Biomaterials Engineering, Department of Oral Materials Sciences and Technology, Cource of Oral Health Engineering, School of Oral Health Care Sciences, Faculty of Dentistry, Tokyo Medical and Dental University
    • YOSHIDA Keiichi
    • Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University
    • MIURA Hiroyuki
    • Fixed Prosthodontics, Department of Restorative Sciences, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University

抄録

The purpose of this study was to evaluate the influence of flexural modulus of non-metal posts on the fracture strength and failure mode of composite resin cores. Thirty-two human premolars were divided into four groups: prefabricated glass fiber post with 1.0 mm diameter and composite resin core (Group PE1.0), that with 1.5 mm diameter and composite resin core (Group PE1.5), experimental post (flexural modulus; 4.25GPa) and composite resin core (Group EX), and preparation for abutment teeth only (Group NT). After a static loading test, the fracture strength and failure mode were recorded. Group NT (1670.81 N) showed higher fracture strength than Groups PE1.0 (866.44 N), PE1.5 (825.19 N) and EX (1075.63 N) (<I>p</I><0.05). This study showed that the fracture strength of endodontically treated teeth restored with composite resin cores is not influenced by the flexural modulus of non-metal posts.

収録刊行物

  • Dental materials journal

    Dental materials journal 31(1), 113-119, 2012-01-01

    日本歯科理工学会

参考文献:  34件中 1-34件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10030128445
  • NII書誌ID(NCID)
    AA10443149
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    02874547
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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