Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Evaluation of fit of anterior and posterior single crowns manufactured by light-curing additive manufacturing

광중합 방식의 적층 가공으로 제작된 전치과 구치 단일 크라운의 적합도 평가

  • Eun-Jeong Bae (Department of Dental Technology, Bucheon University) ;
  • Wan-Sun Lee (Department of Dental Technology, Bucheon University)
  • Received : 2023.07.13
  • Accepted : 2023.08.07
  • Published : 2023.09.30
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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 ㎛, the fit of the anterior and posterior teeth fabricated using LCD and DLP was clinically acceptable.

Keywords

Acknowledgement

This work was supported by 2023 Bucheon University Research Grant.

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