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구강인기법과 왁스블록의 종류에 따른 금속 코핑의변연적합도 비교

Comparison of marginal fit of metal copings according to wax blocks and oral scanning methods

대한치과기공학회지 2020년 42권 3호 p.234 ~ 239
정인성, 김원영, 전병욱,
소속 상세정보
정인성 ( Chung In-Sung ) - Catholic University of Pusan College of Health Sciences Department of Dental Laboratory Science
김원영 ( Kim Won-young ) - Catholic University of Pusan College of Health Sciences Department of Dental Laboratory Science
전병욱 ( Jeon Byung-Wook j ) - Catholic University of Pusan College of Health Sciences Department of Dental Laboratory Science

Abstract


Purpose: We investigated the marginal fit between abutment and metal copings according to impression technique, wax block types, and metal types.

Methods: We selected the traditional impression method of using rubber impression materials and the digital impression method of using oral scanners, three types of wax blocks, and two types of metal, both of which were domestically and commercially available, were selected to produce metal copings, and the marginal fit was determined through the use of silicon replication.

Results: The measurements of axial wall fit revealed that the IYV specimens had the best fit, with a mean gap of 24.11±5.95 μm, followed by CEV, CHV, CSS, CSV, CES, CHS, and IYS specimens (mean: 33.44±8.41 μm). The differences were not statistically significant. The marginal gap measurements showed that the CEV specimen had the smallest gap, 17.25±4.13 μm, followed by the CSV, CHV, CSS, CES, CHS, IYV, and IYS specimen (mean: 43.47±15.63 μm). The differences were statistically significant.

Conclusion: The axial wall fit of the metal coping (VeraBond2V; Aalba Dent, Inc., Fairfield, CA, USA) produced by the lost wax technique with the traditional impression method was excellent. The marginal fit of the metal coping (VeraBond 2V) produced by wax milling with the use of an oral scanner was also excellent. The marginal fit of the metal coping was within the clinically acceptable limits in all groups.

키워드

Impression technique; Marginal fitness; Oral scanner; Wax block

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