• Corpus ID: 23102379

Full-ceramic CAD/CIM anterior crowns and copings.

  title={Full-ceramic CAD/CIM anterior crowns and copings.},
  author={Andreas Bindl and Simone I Windisch and Werner H. M{\"o}rmann},
  journal={International journal of computerized dentistry},
  volume={2 2},
The purpose of the investigation was to examine the marginal and internal fit of Cerec anterior crowns and crown copings. The marginal and internal fit of Cerec anterior crowns (n = 18) and copings was examined on each of six anterior model tooth preparations, with different types of butt-margin crown preparation design on different teeth: 1.) straight flat (tooth 22), 2.) following the CEJ with mid-approximally steep curvature angles of 90 degrees mesial and 40 degrees distal (tooth 21) and 3… 
Marginal and internal adaptation of zirconium dioxide ceramic copings and crowns with different finish line designs.
It was found that the finish line design seemingly wielded no influence on marginal adaptation of single-tooth ZrO2 ceramic copings and crowns, and the marginal and internal adaptation values in the present study were all within the clinically acceptable range.
Marginal Fit Comparison of CAD/CAM Crowns Milled from Two Different Materials
A significant difference exists in the marginal gap discrepancy when comparing hybrid ceramic and lithium disilicate CAD/CAM crowns and crystallization firing can result in a significant increase in the margins.
Evaluation of marginal and internal gaps of metal ceramic crowns obtained from conventional impressions and casting techniques with those obtained from digital techniques
Metal ceramic crowns obtained from direct optical scanning showed the least marginal and internal gap when compared to the castings obtained from inlay casting wax and indirect optical scanning.
Marginal and internal discrepancies related to margin design of ceramic crowns fabricated by a CAD/CAM system.
  • R. Souza, M. Özcan, M. Bottino
  • Medicine, Materials Science
    Journal of prosthodontics : official journal of the American College of Prosthodontists
  • 2012
Evaluating the marginal discrepancy (MD) and internal discrepancy (ID) of ceramic crowns manufactured by a CAD/CAM system, having different finish lines found internal discrepancy was the lowest in the axial region followed by radius and occlusal regions.
An in vivo evaluation of fit of zirconium-oxide based ceramic single crowns, generated with two CAD/CAM systems, in comparison to metal ceramic single crowns.
It was concluded that the two zirconium-oxide-based ceramic CAD/CAM systems demonstrated a similar and acceptable marginal fit when compared to more traditional metal ceramic crowns.
In vitro study on marginal and internal fit of CAD/CAM all-ceramic crowns.
The purpose of this study was to evaluate the marginal and internal fit of all-ceramic crowns fabricated using the Decsy CAD/CAM system and found that each experimental crown met the clinically acceptable criterion.
Influence of different convergence angles and tooth preparation heights on the internal adaptation of Cerec crowns.
There was little difference in the internal fit of Cerec crowns prepared with convergence angles of 12 degrees and 20 degrees, and Distal shadows influenced the thickness of the cement spaces, particularly at the distal walls.