Basically study of evaluating on ceramic blank for CAD / CAM

2016 Fiscal Year Final Research Report

• Project/Area Number: 26462946
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: Iwasaki Naohiko 東京医科歯科大学, 大学院医歯学総合研究科, 助教 (20242216)
• Research Collaborator: Suzuki Tetsuya 東京医科歯科大学, 大学院医歯学総合研究科, 教授 (60179231) ; Yuzaki Keisyo 東京医科歯科大学, 歯学部, 学生 ; Matsudaira Kazuki 東京医科歯科大学, 歯学部, 学生
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 歯科CAD/CAMシステム / 切削加工 / ジルコニアブランク / 辺縁再現性

Outline of Final Research Achievements

The aim of this study was to establish criteria for comparing marginal reproducibility of dental ceramics materials for CAD/CAM.
The marginal reproducibility of the zirconia blank for CAD/CAM was evaluated as a number of chippings using the experimental specimens consisting 3 bicones. A number of chippings decreased with increasing the base angle and disk thickness. It was difficult to evaluate the marginal reproducibility by one fabricating condition. The marginal reproducibility was considered to be more related to toughness rather than flexural strength. Moreover, the marginal reproducibility varied when different CAM software were used, therefore the performance of software is also considered to be a factor in the marginal reproducibility. The criteria for dental ceramics have not yet established in this study. Therefore, further research will require in the future.

Free Research Field

歯科理工学