Fitting accuracy and fracture resistance of crowns using a hybrid zirconia frame made of both porous and dense zirconia

Takashi Nakamura, Tsuyoshi Sugano, Hirofumi Usami, Kazumichi Wakabayashi, Hiroshi Ohnishi, Tohru Sekino, Hirofumi Yatani

研究成果: Article

3 引用 (Scopus)

抜粋

The purpose of this study is to evaluate the fitting accuracy and fracture resistance of crowns using a hybrid zirconia frame made of both porous and dense zirconia. Commercial semi-sintered zirconia, sintered dense zirconia and sintered hybrid zirconia were used. Sintered zirconia was milled using the CAD/CAM system, and semi-sintered zirconia was milled and sintered to fabricate molar crown frames. Completed frames were veneered with tooth-colored porcelain. The marginal and internal gaps between frames/ crowns and abutments were measured. Each crown specimen was subjected to a fracture test. There were no significant differences in marginal and internal gap among all the frames and crowns. The crown with the hybrid zirconia frame had a 31–35% greater fracture load than that with the commercial or dense zirconia frame (p<0.01). This suggests that the all-ceramic crowns with a hybrid zirconia frame have a high fracture resistance.

元の言語English
ページ(範囲)257-262
ページ数6
ジャーナルDental materials journal
34
発行部数2
DOI
出版物ステータスPublished - 2015 1 19

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

フィンガープリント Fitting accuracy and fracture resistance of crowns using a hybrid zirconia frame made of both porous and dense zirconia' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Nakamura, T., Sugano, T., Usami, H., Wakabayashi, K., Ohnishi, H., Sekino, T., & Yatani, H. (2015). Fitting accuracy and fracture resistance of crowns using a hybrid zirconia frame made of both porous and dense zirconia. Dental materials journal, 34(2), 257-262. https://doi.org/10.4012/dmj.2014-145