수작업과 CAD-CAM에 의해 제작된 3-unit 브리지 왁스 패턴의 적합도 비교
Comparative Fit of 3-unit Bridge Wax Patterns Fabricated by Manual and CAD-CAM Techniques
김시철, 배지영, 이해형,
소속 상세정보
김시철 ( Kim Si-Chul ) - 단국대학교 치과대학 생체재료학교실
배지영 ( Bae Ji-Young ) - 단국대학교 치과대학 생체재료학교실
이해형 ( Lee Hae-Hyoung ) - 단국대학교 치과대학 생체재료학교실
KMID : 0362220100370040305
Abstract
The purpose of this study was to compare the marginal and internal fit of 3-unit bridge wax patterns fabricated
by manual wax-up or CAD-CAM techniques. A three-unit bridge model was prepared with die stone and
two types of margin, knife and chamfer were applied to the abutment teeth. The fit of wax patterns was measured
from mesiodistally sectioned of bridge model with wax patten by microscopic examination. Gap dimensions of
wax patterns prepared in this study were <100 ㎛, which were within clinically acceptable level, except for occlusal
gap of CAD-CAM wax pattern. Wax patters with knife margin produced better adaption accuracy than does
those with chamfer margin. Axial gap adaption was very good regardless of margin type. Overall, the level of accuracy
of wax pattern produced by manual technique was better than that of CAD-CAM technique.
키워드
Fit; Wax pattern; Manual wax-up; CAD-CAM; Bridge
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