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KMID : 1020220190190061067
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Journal of Korean Society of Dental Hygiene
2019 Volume.19 No. 6 p.1067 ~ p.1075
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Assessment of the fit of partial frame fabricated by SLS 3D printer
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Park Young-Dae
Kang Wol
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Abstract
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Objectives: The present study aimed to compare the accuracy of removable partial denture (RPD) frameworks fabricated by selective laser sintering (SLS) before and after electropolishing.
Methods: A partially edentulous mandibular model was used as the working model. Scanning of the model was performed using a dental scanner. The framework was designed using CAD software. The metal framework was formed using an SLS 3D printer. 3D scans of the two fabricated prototypes produced before and after electropolishing were overlapped with reference data. The fit was calculated based on Root Mean Square (RMS). Fabrication accuracy was verified using the paired t-test to compare the discrepancy before and after electropolishing.
Results: The mean (SD) values of RMS before and after electropolishing were 126.6 (34.19) and 75.86 (21.36), respectively. There was a statistically significant difference before and after electropolishing (p<0.05).
Conclusions: Metal frameworks made with SLS 3D printers showed clinically acceptable fit after electropolishing.
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KEYWORD
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Dental polishing, Dentures, Printing, Three-dimensional
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