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대한구강악안면임프란트학회지 2018 ; 22 (3) : p.8~16

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밀링 방법으로 제작한 레진과 지르코니아 3본 브릿지 모델의 3차원 분석을 이용한 재현성 비교, Comparison of Reproducibility of Milled Acrylic Resin and Zirconia Models for 3-unit bridge Using Three-dimensional Analysis

저자 박강석1, 김성균1*, 허성주1, 곽재영1, 박지만2, 안진수3, 서덕규4
논문 종류 원저 전문 보기 22-3_1.pdf 22-3_1.pdf
Purpose: The objective of this study was to investigate the reproducibility of milled acrylic resin and
zirconia models using three-dimensional analysis.
Material and Methods: Zirconia discs and acrylic resin blocks were milled to make models. Each
model was scanned with a model scanner. The zirconia models were superimposed with other
zirconia model, and the acrylic resin models were superimposed with other acrylic resin model threedimensionally.
Root-mean-square (RMS) values were obtained. Distances between two superimposed
models were measured. Statistical significances were tested using the Mann-Whitney U test and t-test.
Results: The RMS values of the zirconia model and the acrylic resin model were not significantly
different (p ≥0.05). At the premolar site, distances between the zirconia models at the upper axial and
at the lower axial wall were significantly smaller than for the acrylic resin models (p <0.05). At the
molar site, distance between the zirconia models at the lower axial wall was significantly smaller
than for the acrylic resin models (p <0.05).
Conclusion: Although there is a difference in reproducibility between the milled acrylic resin model
and the zirconia model in the localized region, no significant difference was found in the whole
model.
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