치과 캐드캠 밀링장비에 따른 3본브릿지의 정확도 비교The comparison of accuracy on three-unit fixed dental prosthesis made with CAD/CAM milling machines
- Other Titles
- The comparison of accuracy on three-unit fixed dental prosthesis made with CAD/CAM milling machines
- Authors
- 배소연; 박진영; 김지환; 김혜영; 김명배; 김웅철
- Issue Date
- 2015
- Publisher
- 대한치과기공학회
- Keywords
- Dental CAD/CAM system; Accuracy; Three-dimensional superimposition analysis
- Citation
- 대한치과기공학회지, v.37, no.1, pp.9 - 15
- Indexed
- KCI
OTHER
- Journal Title
- 대한치과기공학회지
- Volume
- 37
- Number
- 1
- Start Page
- 9
- End Page
- 15
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/95845
- DOI
- 10.14347/kadt.2014.37.1.9
- ISSN
- 1229-3954
- Abstract
- Purpose: The purpose of this study was to compare the accuracy of the maxillary three-unit fixed dental prosthesis (FDPs) made using two CAD/CAM milling machines : DCM Group(Dentaim CAD/CAM milling machine), WCM Group(Wieland CAD/CAM milling machine).
Methods: Each of 10 duplicate models was scanned by blue light scanner(Identica, Medit, Korea), and the threeunit FDPs (STL file) was designed using DelcamCAD. A total of 20 three-unit FDPs was fabricated, comprising 2 groups of 10 specimens each(shrinkage ratio is 1:1). The first three-unit FDPs STL file was used as a CAD reference model (CRM). Obtained STL files by scanning the inner surface of three-unit FDPs were converted into the point clouds-ASCⅡ files. Discrepancies between the point clouds and CRM were measured by superimposition software.
Statistical methods to analyze the data were used non-parametric method. The mean (SD) values were compared by a Mann-Whitney U-test. Type one error rate was set at 0.05.
Results: WCM group had small discrepancies with 2.17 of mean value compared to 4.44 in DCM group.
The accuracy values between the two groups showed a statistically significant difference (Table 2, p<.05).
Conclusion: The accuracy of the three-unit fixed dental prosthesis(FDPs) made of two CAD/CAM milling machines were statistically different. Accuracy with which the prosthesis made of WCM group was superior.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Health Sciences > Division of Health Policy and Management > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.