Comparing accuracy of denture bases fabricated by injection molding, CAD/CAM milling, and rapid prototyping method
이수지, 홍성진, 백장현, 배아란, 권긍록, 노관태,
소속 상세정보
이수지 ( Lee Su-Ji ) - Private practice
홍성진 ( Hong Seoung-Jin ) - Kyung Hee University Dental Hospital Department of Prosthodontics
백장현 ( Paek Jang-Hyun ) - Kyung Hee University School of Dentistry Department of Prosthodontics
배아란 ( Pae Ah-Ran ) - Kyung Hee University School of Dentistry Department of Prosthodontics
권긍록 ( Kwon Kung-Rock ) - Kyung Hee University School of Dentistry Department of Prosthodontics
노관태 ( Noh Kwan-Tae ) - Kyung Hee University School of Dentistry Department of Prosthodontics
Abstract
PURPOSE: The accuracy of denture bases was compared among injection molding, milling, and rapid prototyping (RP) fabricating method.
MATERIALS AND METHODS: The maxillary edentulous master cast was fabricated and round shaped four notches were formed. The cast was duplicated to ten casts and scanned. In the injection molding method, designed denture bases were milled from a wax block and fabricated using SR Ivocap injection system. Denture bases were milled from a pre-polymerized block in the milling method. In the RP method, denture bases were printed and post-cured. The intaglio surface of the base was scanned and surface matching software was used to measure inaccuracy. Measurements were performed between four notches and two points in the mid-palatal suture to evaluate inaccuracy. The palatine rugae resolution was evaluated. One-way analysis of variance was used for statistical analysis at α=.05.
RESULTS: No statistically significant differences in distances among four notches (P>.05). The accuracy of the injection molding method was lower than those of the other methods in two points of the mid-palatal suture significantly (P<.05). The degree of palatine rugae resolution was significantly higher in the injection molding method than that in other methods (P<.05).
CONCLUSION: The overall accuracy of the denture base is higher in milling and RP method than the injection molding method. The degree of fine reproducibility is higher in the injection molding method than the milling or RP method.
키워드
Computer-aided design and computer-aided manufacturing (CAD/CAM); Denture base; Milling; 3D printing; Digital light processing
원문 및 링크아웃 정보
등재저널 정보