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http://dx.doi.org/10.17135/jdhs.2015.15.1.12

Comparison of the Marginal and Internal Gap of Metal Coping according to Processing Method of Dental CAD/CAM System  

Kim, Dong-Yeon (Division of Dental Laboratory Science and Engineering, Department of Public Health Science, Korea University Graduate School of Public Health)
Jeon, Jin-Hun (Division of Dental Laboratory Science and Engineering, Department of Public Health Science, Korea University Graduate School of Public Health)
Park, Jin-Young (Division of Dental Laboratory Science and Engineering, Department of Public Health Science, Korea University Graduate School of Public Health)
Kim, Ji-Hwan (Division of Dental Laboratory Science and Engineering, Department of Public Health Science, Korea University Graduate School of Public Health)
Kim, Hae-Young (Division of Dental Laboratory Science and Engineering, Department of Public Health Science, Korea University Graduate School of Public Health)
Kim, Woong-Chul (Division of Dental Laboratory Science and Engineering, Department of Public Health Science, Korea University Graduate School of Public Health)
Publication Information
Journal of dental hygiene science / v.15, no.1, 2015 , pp. 12-17 More about this Journal
Abstract
The purpose of this study was to evaluate the marginal and internal gap of metal coping fabricated using additive manufacturing (AM) group and subtractive manufacturing (SM) group by dental computer-aided design (CAD)/computer-aided manufacturing (CAM) systems. Twenty same cases of stone models of abutment teeth 16 by the universal numbering system were manufactured and scanned. Ten metal copings of control group were fabricated using SM and ten metal coping of experimental group were fabricated using AM. Marginal and internal gap of copings were measured using the silicone replica technique and digital microscope (${\times}140$). The data were analyzed using IBM SPSS 21.0 Statistical Software for independent samples t-test (${\alpha}=0.05$). Mean${\pm}$ standard deviation (SD) of marginal and internal gap total size of SM group was $101.00{\pm}40.33{\mu}m$ of AM group was $83.61{\pm}40.37{\mu}m$. Mean${\pm}$SD of marginal and internal gap total size of SM group was significantly greater than that of AM group (p<0.05). This study showed that AM metal copings had a better marginal and internal gap than SM metal copings.
Keywords
Additive manufacturing; Computer-aided design/computer-aided manufacturing system; Internal gap; Marginal gap; Subtractive manufacturing;
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Times Cited By KSCI : 1  (Citation Analysis)
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