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Article: Studies from Tongji University yield new information about quintessence.
- Article from:
- Science Letter
- Article date:
- November 17, 2009
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In this recent study, researchers in Shanghai, People's Republic of China conducted a study "To investigate the effect of abutment finish line curvature on the fit of all-ceramic CAD/CAM crowns and metal-ceramic crowns. Three types of finish line curvature abutments (1-, 3-, and 5-mm curvature) were prepared on typodont maxillary central incisors."
"For each type of abutment, 5 all-ceramic crowns (Cercon system, DeguDent) and 5 metal-ceramic crowns were fabricated. The marginal gaps of copings and veneered crowns were measured on a profile projector. The data were calculated and analyzed with 2-way ANOVA and Tukey HSD test (alpha = .05). The mean labial, ...