作者
Flávio D Neves, Célio J Prado, Marcel S Prudente, Thiago APN Carneiro, Karla Zancopé, Letícia R Davi, Gustavo Mendonça, Lyndon F Cooper, Carlos José Soares
发表日期
2014/11/1
期刊
The Journal of prosthetic dentistry
卷号
112
期号
5
页码范围
1134-1140
出版商
Mosby
简介
Statement of problem
No consensus exists concerning the acceptable ranges of marginal fit for lithium disilicate crowns fabricated with either heat-pressing techniques or computer-aided design and computer-aided manufacturing (CAD/CAM) systems.
Purpose
The purpose of the study was to evaluate with micro-computed tomography the marginal fit of lithium disilicate crowns fabricated with different chairside CAD/CAM systems (Cerec or E4D) or the heat-pressing technique.
Material and methods
Lithium disilicate crowns were fabricated to fit an in vitro cast of a single human premolar. Three fabrication techniques were used: digital impressions with Cerec 3D Bluecam scanner with titanium dioxide powder, followed by milling from IPS e.max CAD for Cerec; digital impressions with E4D Laser scanner without powder, followed by milling from IPS e.max CAD for E4D; and fabrication from IPS e.max Press by using the …
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FD Neves, CJ Prado, MS Prudente, TAPN Carneiro… - The Journal of prosthetic dentistry, 2014