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http://dx.doi.org/10.14347/kadt.2018.40.4.217

Three-dimensional analysis of artificial teeth position according to three type complete mandibular denture before and after polymerization  

Park, Jin-Young (Institute for Health Science, College of Public Health Science, Korea University)
Kim, Dong-Yeon (Institute for Health Science, College of Public Health Science, Korea University)
Kim, Won-Soo (Department of Dental Technology, Dae-jeon Health Science of College)
Lee, Gwang-Young (Department of Dental Laboratory Technology, Wonkwang Health Science University)
Jeong, Il-Do (Institute for Health Science, College of Public Health Science, Korea University)
Bae, So-Yeon (Department of Dental Laboratory Science & Engineering, College of Health Science, Korea University)
Kim, Ji-Hwan (Department of Dental Laboratory Science & Engineering, College of Health Science, Korea University)
Kim, Woong-Chul (Department of Dental Laboratory Science & Engineering, College of Health Science, Korea University)
Publication Information
Journal of Technologic Dentistry / v.40, no.4, 2018 , pp. 217-224 More about this Journal
Abstract
Purpose: The aim of this study was to evaluate accuracy of three type complete mandibular denture of before and after polymerization. Methods: Mandibular edentulous model was selected as the master model. 15 study models were made by Type IV stone. Wax complete mandibular dentures were produced by the denture base and artificial teeth. Before and after curing, STL files were obtained using a blue scanner. By superimposing the digitized complete mandibular denture data(after curing) with the CAD-reference(before curing) three-dimensionally, visual fit-discrepancies were drawn by calculating the root mean square (RMS) and visualized on a color-difference map. Each calculated RMS-value was statistically analyzed by 1-way analysis of variance(ANOVA) (${\alpha}=.05$). Results: Mean(SD) RMS-values was OM group $88.98(6.10){\mu}m$, BM group $82.35(13.46){\mu}m$, BDM group $77.83(9.46){\mu}m$. The results of the 1-way ANOVA showed no statistically significant differences in the RMS values of the Three groups for the material (P > .241). Conclusion : Deformation of artificial teeth position was observed in all groups after resin polymerization. But the values, all group were within the clinically acceptable range. The values of BDM group showed the least deformation than the other two groups.
Keywords
Complete mandibular denture; Polymerization; Three-dimensional analysis; Bar-type glass fiber mesh; Shrinkage;
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