KMID : 0362120240460010001
|
|
Journal of Technologic Dentistry 2024 Volume.46 No. 1 p.1 ~ p.7
|
|
Effect of cement space on marginal and internal fit of a zirconia core fabricated using by additive manufacturing
|
|
Min Ji-Won
Kim Se-Yeon Kim Jae-Hong
|
|
Abstract
|
|
|
Purpose: The goal of this study was to determine the clinical acceptability of various cement space settings for the marginal and internal fit of a zirconia core manufactured using additive manufacturing.
Methods: The maxillary right incisor served as the master model. After scanning the maxillary right incisor with a dental 3D (three-dimensional) scanner, the stereo lithography file was created using different cement space settings of 40, 120, and 200 ¥ìm using computer- aided design software (Dental System 2018; 3Shape). The marginal and internal fit of the 3 groups were determined using the silicon replica technique. Measurement points were divided into the following three categories: margin, axial wall, and incisal. To ensure more accurate measurements, these three measurement points were divided into 8 points.
The Shapiro-Wilk, one-way ANOVA, and Tukey¡¯s honestly significant difference test (for all tests ¥á=0.05) were the statistical analyses that were included in the study.
Results: The CS (cement space)-200 group had better marginal and internal fit than the CS-40 and CS-120 groups, and there were statistically significant differences at the marginal and incisal points, except for the axial wall points. CS-200 group, both marginal and internal fit were within 120 ¥ìm, which is the clinically acceptable value.
Conclusion: This study suggests that a 200 ¥ìm cement space setting is ideal for optimal marginal and internal fit of 3D-printed ceramic crowns.
|
|
KEYWORD
|
|
Additive manufacturing, Cement space, Marginal and internal fit, Silicone replica technique
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|
|