Marginal accuracy of CAD/CAM inlays made with the original and the updated software

The software driving the Cerec CAD/CAM system has recently been updated. In this study, the marginal accuracy of computer-machined porcelain inlays was determined using the original and the updated software. Two types of MOD cavities in Frasaco resin teeth were prepared with either sharp or rounded...

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Bibliographic Details
Published inJournal of dentistry Vol. 20; no. 3; pp. 171 - 177
Main Authors Inokoshi, S., Van Meerbeek, B., Willems, G., Lambrechts, P., Braem, M., Vanherle, G.
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.06.1992
Subjects
Bicuspid
CAD/CAM
Computer Systems
Dental Equipment
Dental Porcelain
Dentistry
Denture Design
Humans
In Vitro Techniques
Inlays
Marginal adaptation
Software
Surface Properties
Marginal adaptation
Inlays
CAD/CAM
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Summary:The software driving the Cerec CAD/CAM system has recently been updated. In this study, the marginal accuracy of computer-machined porcelain inlays was determined using the original and the updated software. Two types of MOD cavities in Frasaco resin teeth were prepared with either sharp or rounded box corners. The distance of the occlusal and proximal marginal interface was determined using a measuring microscope. The mean occlusal interfacial distance was 52 μm for both programs. Only the box corners showed a significantly larger space, of which the mean value was approximately 200 μm. The updated version improved the marginal accuracy at the box corners. Further reduction of the interfacial distance was accomplished by rounding the sharp box corners.
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ISSN:0300-5712
1879-176X
DOI:10.1016/0300-5712(92)90132-V