Analysis of Vertical Marginal Adaptation of Zirconia Fixed Dental Prosthesis Frameworks Fabricated by the CAD/CAM System: A Randomized, Double-Blind Study
Copyright policy )Analysis of Vertical Marginal Adaptation of Zirconia Fixed Dental Prosthesis Frameworks Fabricated by the CAD/CAM System: A Randomized, Double-Blind Study
The purpose of this study was to evaluate the marginal adaptation of fixed dental prosthesis frameworks fabricated by computer-aided design/computer-assisted manufacture (CAD/CAM) with three different systems of data acquisition.A total of 50 specimens were fabricated as follows: using the conventional method (Ni-Cr) (n=10); iTero/industrial milling (Group 1, n=10); Cerec Bluecam/industrial milling (Group 2, n=10); 3S/industrial milling (Group 3, n=10); and Cerec BlueCam/Sirona milling (Group 4, n=10). The specimens were numbered and randomized, and the vertical marginal discrepancy was analyzed.Intraobserver analysis indicated no statistically significant difference (paired t test, P=.822) between periods before and after analysis. The conventional method (321 μm) showed greater discrepancy when compared with the CAD/CAM system (89 μm) (P.05).The CAD/CAM systems showed less marginal discrepancy than the conventional method for the fabrication of the frameworks.
Dental Materials, 670, Surface Properties, Materials Testing, Computer-Aided Design, Denture, Partial, Fixed, Humans, Chromium Alloys, Zirconium, Dental Marginal Adaptation, Denture Design
Dental Materials, 670, Surface Properties, Materials Testing, Computer-Aided Design, Denture, Partial, Fixed, Humans, Chromium Alloys, Zirconium, Dental Marginal Adaptation, Denture Design
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