Comparative analysis of strain according to two wavelengths of light source and constant temperature bath deposition in ultraviolet-curing resin for dental three-dimensional printing

Kim, Dong-Yeon; Lee, Gwang-Young; Kang, Hoo-Won; Yang, Cheon-Seung

doi:10.14347/jtd.2020.42.3.208

J. Tech. Dent.

2020

DOI: 10.14347/jtd.2020.42.3.208

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Comparative analysis of strain according to two wavelengths of light source and constant temperature bath deposition in ultraviolet-curing resin for dental three-dimensional printing

Dong-Yeon Kim¹,

Gwang-Young Lee

Hoo-Won Kang

et al.

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2021

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Cited by 2 publications

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Analysis of deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a DLP printer

Kim¹,

Lee

2021

J. Tech. Dent.

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This study aimed to analyze deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a digital light processing (DLP) printer.Methods: An edentulous model was prepared and an occlusal rim was produced. The edentulous model and occlusal rim were scanned using a model scanner. A complete denture was designed using a dental computer-aided design, and the denture base and artificial tooth were separated. Ten complete arch artificial teeth were printed using a 3D printer (DLP). Complete arch artificial teeth was classified into the following three groups: a group no post-curing (NC), a group with 10 minutes post-curing (10M), and a group with 20 minutes post-curing (20M). Specimens were scanned using a model scanner. The scanned data were overlapped with the reference data. Statistical analysis was performed using one-way ANOVA analysis of variance, Kruskal-Wallis test, and Mann-Whitney U test (α=0.05).Results: Regarding the overall deviation of complete arch artificial teeth, the NC group showed the lowest mean deviation of 111.13 µm and the 20M group showed the highest mean deviation of 131.03 µm. There were statistically significant differences among the three groups (p<0.05). Conclusion:The complete arch artificial tooth showed deformation due to post-curing. In addition, the largest shrinkage deformation was observed at 10 minutes of post-curing, whereas the least deformation was observed at 20 minutes.

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Analysis of deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a DLP printer

Kim¹,

Lee

2021

J. Tech. Dent.

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Evaluation of dimension stability according to UV-C ultrasonic cleaning of full arch artificial teeth made with DLP printer for photopolymerization

Kim¹,

Lee

2021

J. Tech. Dent.

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The purpose of this study was to compare the dimension safety evaluation between a general ultrasonic cleaner and an ultrasonic cleaner equipped with UV-C (ultraviolet-C).Methods: An edentulous model was prepared. A denture base and an occlusal rim were fabricated, and scanning was performed. After scanning, a denture base and full arch artificial teeth were designed. The full arch artificial teeth were printed using a three-dimensional printer (n=10). The residual resin was washed with alcohol and then scanned (reference data). The printed specimens were classified and cleaned using a general ultrasonic cleaner (GU group) and an ultrasonic cleaner equipped with UV-C (UC group). After each washing, a rescan was performed (scan data). Reference data and scan data were superimposed using overlapping software. Data were statistically analyzed using the Mann-Whitney test (α=0.05). Results:In the deviation values of full arch artificial teeth, the GU group showed a high deviation of 18.02 μm and the UC group showed a low deviation of 15.02 μm. The two groups demonstrated a statistically significant difference (p<0.05). Conclusion:Full arch artificial teeth prepared using photopolymerized resin were deformed according to the temperature of water generated in the ultrasonic cleaner. It is judged that there is no deformation according to the UV-C ultrasonic cleaner.

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Comparative analysis of strain according to two wavelengths of light source and constant temperature bath deposition in ultraviolet-curing resin for dental three-dimensional printing

Cited by 2 publications

References 10 publications

Analysis of deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a DLP printer

Analysis of deformation according to post-curing of complete arch artificial teeth for temporary dentures printed with a DLP printer

Evaluation of dimension stability according to UV-C ultrasonic cleaning of full arch artificial teeth made with DLP printer for photopolymerization

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