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KMID : 0362120200420010035
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Journal of Technologic Dentistry
2020 Volume.42 No. 1 p.35 ~ p.41
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A Study of Three-dimensional evaluation of the accuracy of resin provisional restorations fabricated with the DLP printer
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Kang Wol
Lee Hee-Kyung
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Abstract
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Purpose: The purpose of this study was to evaluate the accuracy of the DLP 3D printer by conducting 3-dimensional assesment of resin provisional restorations.
Methods: The first premolar of the maxillary was prepared for the abutment. The abutment was scanned by using a scanner. The provisional restoration was designed by using CAD software. A total of 16 resin provisional restorations were produced using ZD200 and Veltz DLP 3D printer. Scanning was done of resin provisional restorations and 3-dimensional measurement was conducted for accuracy. The mean (SD) of RMS was reported for each group. Independent t-test was used to assess the statistical significance of the results. All analyses were done using SPSS 22.0.
Results: The mean ± SD of RMS value for the accuracy of the resin provisional restorations that was fabricated by using ZD200 and Veltz DLP 3D printer were 50.85.±4.64㎛ and 70.33±6.31㎛. Independent t-test showed significant differences between groups(p<0.001).
Conclusion: The resin provisional restorations made with DLP 3D printers showed clinically acceptable accuracy.
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KEYWORD
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Accuracy, Crowns, Printing
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