Comparison of three-dimensional adaptation as per the rinsing time of temporary crown manufactured using a digital light processing printer

Lee, Beom-Il; You, Seung-Gyu; You, Seung-Min; Kim, Ji-Hwan

doi:10.14347/jtd.2020.42.4.334

J. Tech. Dent.

2020

DOI: 10.14347/jtd.2020.42.4.334

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Comparison of three-dimensional adaptation as per the rinsing time of temporary crown manufactured using a digital light processing printer

Beom-Il Lee

Seung-Gyu You

Seung-Min You

et al.

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2021

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Cited by 2 publications

References 28 publications

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Comparison of shrinkage according to thickness of photopolymerization resin for 3D printing

Kim¹,

Kim

2021

J. Tech. Dent.

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To perform a comparative study on curing shrinkage according to the thickness of photopolymerization resin.Methods: Stainless steel molds of 2, 4, and 6 mm heights were prepared. The 2, 4, and 6 mm-height molds were classified as the 2H, 4H, and 6H groups, respectively. A photopolymerization resin was injected into the stainless steel mold. Photopolymerization was carried out using a photopolymer machine. During photopolymerization, the wavelength and intensity of 400~405 nm were set to 10, the highest intensity among 1~10. Photopolymerization was performed for 30 min per specimen (each group=10). The inner and outer areas of the specimen were measured. The data were analyzed using one-way ANOVA and Kruskal-Wallis H test (α=0.05).Results: In terms of the inner and outer diameters of the photopolymerization resin specimen, the 2H group contracted the most, whereas the 6H group contracted the least. A statistically significant difference was found between the groups (p<0.05). Conclusion:The amount of light irradiation of the photopolymerization resin must be adjusted according to the thickness.

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Comparison of shrinkage according to thickness of photopolymerization resin for 3D printing

Kim¹,

Kim

2021

J. Tech. Dent.

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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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Comparison of three-dimensional adaptation as per the rinsing time of temporary crown manufactured using a digital light processing printer

Cited by 2 publications

References 28 publications

Comparison of shrinkage according to thickness of photopolymerization resin for 3D printing

Comparison of shrinkage according to thickness of photopolymerization resin for 3D printing

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

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