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Evaluation of Marginal and Internal Gap of Cobalt-Chromium Sintering Metal Coping Fabricated by Dental CAD/CAM System
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  • Journal title : Journal of dental hygiene science
  • Volume 15, Issue 5,  2015, pp.536-541
  • Publisher : the Korean Society of Dental Hygiene science
  • DOI : 10.17135/jdhs.2015.15.5.536
 Title & Authors
Evaluation of Marginal and Internal Gap of Cobalt-Chromium Sintering Metal Coping Fabricated by Dental CAD/CAM System
Kim, Dong-Yeon; Sin, Chun-Ho; Jung, Il-Do; Kim, Ji-Hwan; Kim, Woong-Chul;
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The purpose of this study was to evaluate the marginal and internal gap of Cobalt (Co)-Chromium (Cr) sintering metal coping fabricated by dental computer-aided design/computer-aided manufacturing systems. Abutment tooth 46 of universal numbering system was selected for the study. Twenty Co-Cr metal copings of two groups were manufactured and scanned. Co-Cr cast metal copings (CCM) group of ten were fabricated using investment, burnout and casing after subtractive manufacturing of wax block. Also, Co-Cr sintering metal copings (CSM) group of ten were fabricated using sintering processing after subtractive manufacturing of Co-Cr soft metal bock. Marginal and internal gap of Co-Cr metal copings of twenty were measured by digital microscope () with silicone replica technique. The data was analyzed from IBM SPSS Statistics ver. 22.0 Statistical software for Mann-Whitney U test (). deviation of marginal gap of CCM group was of CSM group was . However, two groups was statistically not different (p>0.05). This study showed that CSM group was clinically acceptable adaptation.
Adaptation;Cobalt;Computer-aided design;Chromium;Marginal;
 Cited by
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