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CAD/CAM으로 제작된 monolithic zirconia crown의 시적 전후 교합양상에 대한 비교

Authors
 용기훈  ;  심준성 
Citation
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.52(3) : 246-251, 2014 
Journal Title
Journal of Korean Academy of Prosthodontics(대한치과보철학회지)
ISSN
 0301-2875 
Issue Date
2014
Keywords
CAD CAM ; Zirconia crown ; Occlusal adjustment
Abstract
In case of prosthesis fabrication by CAD/CAM, location, area and contour of occlusal contacts can be adjusted so more functional occlusion can be acquired. Also, errors in a manufacturing process is reduced compared to cast metal prostheses and porcelain fused metal prostheses fabricated by conventional methods such as casting and porcelain build up. Therefore, prostheses by CAD/CAM show superior occlusion accuracy. Recently, virtual articulator function has been introduced to CAD/CAM system, which reproduces mandibular movement against maxilla. Thus, it is possible to consider occlusal interference in anterior/lateral movement as well as closing movement. There have been many studies on the marginal and internal fit of prostheses using zirconia but the occlusal fit of zirconia crown fabricated by CAD/CAM has not been researched as much. In this case report, 7 zirconia crowns were designed and fabricated by CAD/CAM for total 5 patients. The models of zirconia crowns before and after occlusal adjustment during intraoral try-in were scanned for occlusal contacts, which were compared to evaluate accuracy of prostheses and understand patterns of occlusal adjustment. Most of the occlusal adjustments were done on functional cusps and slopes of zirconia crown, and the magnitude of occlusal adjustment ranged from 15 µm to 60 µm. In the zirconia crown fabricated with CAD/CAM systems, the occlusal adjustment is a necessary procedure, so additional procedures will be needed for compensating reduced mechanical properties.
Files in This Item:
T201403474.pdf Download
DOI
10.4047/jkap.2014.52.3.246
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Shim, June Sung(심준성) ORCID logo https://orcid.org/0000-0003-1428-0122
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/99943
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