Journal of Technologic Dentistry (대한치과기공학회지)

Korean Academy of Dental Technology (대한치과기공학회)
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Three-dimensional analysis of artificial teeth position according to three type complete mandibular denture before and after polymerization

세 가지 방식으로 제작한 하악 총의치의 중합 전후에 따른 인공치아 위치 3차원 분석

  • 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)
  • 박진영 (고려대학교 보건과학대학 보건과학연구소) ;
  • 김동연 (고려대학교 보건과학대학 보건과학연구소) ;
  • 김원수 (대전보건대학교 치기공과) ;
  • 이광영 (원광보건대학교 치기공과) ;
  • 정일도 (고려대학교 보건과학대학 보건과학연구소) ;
  • 배소연 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김지환 (고려대학교 대학원 보건과학과 치의기공전공) ;
  • 김웅철 (고려대학교 대학원 보건과학과 치의기공전공)
  • Received : 2018.07.31
  • Accepted : 2018.12.07
  • Published : 2018.12.30
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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

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Figure 1. Study work flow

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Figure 2. Three-dimensional analysis procedure

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Figure 3. Three-dimensional analysis procedure

Table 1. RMS values representing the discrepancies before and after curing of 3 groups

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Table 2. One-way ANOVA

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