치과 3D 프린팅용 광중합 시간에 따른 중합도 비교
Comparison of polymerization by time of light curing for dental 3D printing
김동연, 이광영,
소속 상세정보
김동연 ( Kim Dong-Yeon ) - Dentrion
이광영 ( Lee Gwang-Young ) - Wonkwang Health Science University Department of Dental Laboratory Technology
Abstract
Purpose: The purpose of this study is to analyze the depth according to curing using photo-curable resin for dental three-dimensional printing.
Methods: A stainless mold with a height of 4 mm was prepared. Ultraviolet (UV) polymeriza-tion resin was injected into the mold. Photocuring was then performed for 5 minutes using a photopolymerizer, and the height was measured using a digital measuring instrument (first group). Second, light polymerization was also performed outside the mold for 5 min-utes, and the height was measured using a digital measuring instrument. Third, light polym-erization was further performed for 5 minutes, and the height was measured using a digital measuring instrument. Statistical analysis was performed with the Kruskal-Wallis test, which is a nonparametric test (α=0.05).
Results: The third group had the largest measurement length, whereas the first group had the smallest. However, the difference between groups was not statistically significant (p>0.05). The color of the first group was different from that of the second and third groups.
Conclusion: All of the 4-mm-thick photocured specimens had a curing reaction, but the part that was not directly irradiated with UV did not show its original color.
키워드
Computer-aided design; Computer-aided manufacturing; Photopolymer; Thick-ness; Three-dimensional printing; Ultraviolet
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