Evaluation of marginal discrepancy of pressable ceramic veneer fabricated using CAD/CAM system: Additive and subtractive manufacturing
- Authors
- Kang, Seen-Young; Lee, Ha-Na; Kim, Ji-Hwan; Kim, Woong-Chul
- Issue Date
- 10월-2018
- Publisher
- KOREAN ACAD PROSTHODONTICS
- Keywords
- Additive manufacturing; Subtractive manufacturing; Computer-aided design and computer-aided machining (CAD/CAM); Ceramic veneer; Heat pressing
- Citation
- JOURNAL OF ADVANCED PROSTHODONTICS, v.10, no.5, pp.347 - 353
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF ADVANCED PROSTHODONTICS
- Volume
- 10
- Number
- 5
- Start Page
- 347
- End Page
- 353
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/72678
- DOI
- 10.4047/jap.2018.10.5.347
- ISSN
- 2005-7806
- Abstract
- PURPOSE. The purpose of this study was to evaluate the marginal discrepancy of heat-pressed ceramic veneers manufactured using a CAD/CAM system. MATERIALS AND METHODS. The ceramic veneers for the abutment of a maxillary left central incisor were designed using a CAD/CAM software program. Ten veneers using a micro-stereolithography apparatus (AM group), ten veneers using a five-axis milling machine (SM group), and ten veneers using a traditional free-hand wax technique (TW group) were prepared according to the respective manufacturing method. The ceramic veneers were also fabricated using a heat-press technique, and a silicone replica was used to measure their marginal discrepancy. The marginal discrepancies were measured using a digital microscope (x160 magnification). The data were analyzed using a nonparametric Kruskal-Wallis H test. Finally, post-hoc comparisons were conducted using Bonferroni-corrected Mann-Whitney U tests (alpha=.05). RESULTS. The mean +/- SD of the total marginal discrepancy was 99.68 +/- 28.01 mu m for the AM group, 76.60 +/- 28.76 mu m for the SM group, and 83.08 +/- 39.74 mu m for the TW group. There were significant differences in the total marginal discrepancies of the ceramic veneers (P<.05). CONCLUSION. The SM group showed a better fit than the AM and TW groups. However, all values were within the clinical tolerance. Therefore, CAD/CAM manufacturing methods can replace the traditional free-hand wax technique.
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Collections - College of Health Sciences > Division of Health Policy and Management > 1. Journal Articles
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