광중합 방식의 적층 가공으로 제작된 전치과 구치 단일 크라운의 적합도 평가
Evaluation of fit of anterior and posterior single crowns manufactured by light-curing additive manufacturing
배은정, 이완선,
소속 상세정보
배은정 ( Bae Eun-Jeong ) -
이완선 ( Lee Wan-Sun ) -
Abstract
Purpose: This study aimed to evaluate the fit of the anterior and posterior teeth printed using two light-curing three-dimensional (3D) printers.
Methods: Anterior and posterior single crowns were designed using dental software and were printed using 2 types of 3D printers, liquid crystal display (LCD) and digital light processing (DLP) (n=40). After the printed crown was scanned again from inside and outside, the prepared teeth were evaluated using a 3D program. To compare the root mean square (RMS) results among groups (α=0.05), the one-way analysis of variance and Tukey‘s test were used.
Results: No statistically significant difference was found between the mean RMS values of the anterior and posterior teeth (p>0.05). However, as a result of comparing the internal, external, and tooth shapes, the DLP group showed significantly low errors in the inner and outer surfaces than LCD group (p<0.05).
Conclusion: In terms of clinical acceptance standard of 100 μm, the fit of the anterior and posterior teeth fabricated using LCD and DLP was clinically acceptable.
키워드
Light-curing additive manufacturing; Root mean square; Single crown; Three-dimensional analysis
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