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KMID : 0362120230450030074
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Journal of Technologic Dentistry
2023 Volume.45 No. 3 p.74 ~ p.80
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Evaluation of fit of anterior and posterior single crowns manufactured by light-curing additive manufacturing
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Bae Eun-Jeong
Lee Wan-Sun
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Abstract
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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.
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KEYWORD
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Light-curing additive manufacturing, Root mean square, Single crown, Three-dimensional analysis
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