Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Effect of Washing Solvent and Washing Method on Flexural Strength of 3D-Printed Temporary Resin Material

세척 용액 및 세척 방법이 3D 프린팅 임시수복용 레진의 굴곡강도에 미치는 영향

  • Hae-Bom Kim (Dept. of Dental Laboratory Science, College of Health Science, Catholic University of Pusan) ;
  • Jae-Won Choi (Dept. of Dental Laboratory Science, College of Health Science, Catholic University of Pusan)
  • 김해봄 (부산가톨릭대학교 치기공학과) ;
  • 최재원 (부산가톨릭대학교 치기공학과)
  • Received : 2024.02.29
  • Accepted : 2024.04.09
  • Published : 2024.04.30
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Abstract

The purpose of this study was to evaluate the effect of different washing solvents and washing methods on the flexural strength of 3D printed temporary resin. A bar(25 × 2 × 2 mm) was produced with a layer thickness of 50 ㎛ using an LCD-type 3D printer and divided into 15 groups(n = 10, each) according to washing solution(IPA; 99% isopropyl alcohol, TPM; 93% Tripropylene glycol monomethylether, ETL; Ethanol, TWC; Twin 3D Cleaner, and DNC; DIO navi Cleaner) and washing method(Dip; Dip washing, Ultra; Ultrasonic washing, and Auto; Automated washing). All groups were washed for 5 minutes, and post-cured for 5 minutes using a UV LED light curing machine. The Flexural strength was measured using a three-point bending test using a universal testing machine. For statistical analysis, one-way ANOVA, Tukey HSD post hoc test, Kruskal-Wallis test and post-hoc by Bonferroni-Dunn test(𝛼=.05) were performed depending on whether the normality test was satisfied. In all washing solvents except TPM and DNC, the Dip group showed the lowest flexural strength values, while the Auto group showed the highest flexural strength values except for DNC. Additionally, the washing solution showed completely different flexural strength values depending on the washing method.

Keywords

Acknowledgement

이 논문은 2023년도 부산가톨릭대학교 교내연구비에 의하여 연구되었음.

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