The method to improve the fracture strength of all-ceramic crowns made of zirconia coping.

2014 Fiscal Year Final Research Report

• Project/Area Number: 23592872
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthetic dentistry
• Research Institution: The Nippon Dental University
• Principal Investigator: GOTO Shin-ichi 日本歯科大学, 新潟生命歯学部, 准教授 (10105504)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: ジルコニア / CAD/CAM / コアの形態 / オールセラミッククラウン / 応力負荷試験 / 剪断焼付強さ / チッピング

Outline of Final Research Achievements

The method to improve the strength of all ceramic crown was examined in this study. The fracture force increased with the increase of the thickness of a zirconia copoing and the area of zirconia support. Furthermore treatment with some chemical spreading on half sintered zirconia improved the bond strength between zirconia coping and porcelain veneer significantly. The highest bond strength was observed using Indium tin oxide among them. Treatment with Indium tin oxide in 1mM concentration was improved the bond strength in comparison with treated nothing (Control). It was suggested that the fracture strength of all ceramic crowns improved moreover by these results of our research.

Free Research Field

歯科理工学