The reproducibility and accuracy of internal fit of Cerec 3D CAD/CAM all ceramic crowns.
AffiliationDublin Dental School and Hospital, Dublin 2, Ireland.
Dental Prosthesis Design
Reproducibility of Results
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CitationThe reproducibility and accuracy of internal fit of Cerec 3D CAD/CAM all ceramic crowns. 2009, 17 (2):73-7 Eur J Prosthodont Restor Dent
JournalThe European journal of prosthodontics and restorative dentistry
AbstractThe objective of this study was to evaluate the reproducibility and accuracy of internal fit using Cerec 3D CAD/CAM (computer aided design/computer aided manufacturing) all-ceramic crowns and to investigate the proximal contact point areas between the crowns and neighbouring teeth, in terms of location and the presence or absence of contact. A total of 48 crowns were milled and divided into two groups of twenty-four each. One group consisted of testing a Control die and the other group consisted of testing single Replica stone die duplicates of the Control die. The Internal Marginal Gap, Axio-Occlusal Transition Gap and Occlusal Gap were measured on each crown in both groups. No significant differences were identified between the mean thickness of the Marginal Gap, the Axio-Occlusal Transition Gap and the Occlusal Gap of the Control die when compared with the Replica dies indicating uniformity and consistency of the accuracy of fit and therefore die replication.
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