치과용 DLP 3D Printer 가공체의 열특성 관찰
Observation of thermal properties of dental 3D printer materials
송준부, 박유진, 최성민,
소속 상세정보
송준부 ( Song Joon-Boo ) - Catholic University of Pusan Department of Dental Laboratory Science
박유진 ( Park Yu-Jin ) - Catholic University of Pusan Department of Dental Laboratory Science
최성민 ( Choi Sung-Min ) - Catholic University of Pusan Department of Dental Laboratory Science
Abstract
Purpose: In this study, thermal properties were observed by measuring the extent of ther-mal expansion and the amount of thermal residue that appears upon burnout on a work-piece made by using a dental digital light processing (DLP) three-dimensional (3D) printer.
Methods: Thermal properties of workpieces manufactured by using two 3D printers were observed. The specimens were designed in cylindrical form with dimensions 10 mm in di-ameter and 10 mm in height. The control specimen was made of wax, and the experimental specimen was made of resin. The thermal expansion rate was measured by applying heat to three types of specimens, and burnout residue was measured.
Results: The thermal expansion rate of the wax pattern (WP) specimen was 0.93%±0.05%, of the RP1 specimen was 1.30%±0.08%, and of the RP2 specimen was 1.20%±0.09%. Measuring the recovered residue yielded residual amounts of 0.2% for the WP specimen, 1.1% for the RP2 specimen, and 1.8% for the RP1 specimen.
Conclusion: 1. From measurements of the workpieces manufactured by dental DLP 3D printing, the thermal expansion rate was found to be higher than that of wax. 2. As a result of measuring burnout residues on the workpieces manufactured by dental DLP 3D printing, the required summoning temperature to obtain suitable castings was de-termined to >750℃.
키워드
Digital light processing; Resin; Thermal expansion; Thermal property; Three-di-mensional printer
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