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学科主题: 口腔医学
题名:
Evaluation of the Quantitative Accuracy of 3D Reconstruction of Edentulous Jaw Models with Jaw Relation Based on Reference Point System Alignment
作者: Li, Weiwei1,2,3,4; Yuan, Fusong1,2,3,4; Lv, Peijun1,2,3,4; Wang, Yong1,2,3,4; Sun, Yuchun1,2,3,4
刊名: PLOS ONE
发表日期: 2015-02-06
DOI: 10.1371/journal.pone.0117320
卷: 10, 期:2
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: VISUAL LOCATION RECOGNITION ; 3-D OBJECT RETRIEVAL
英文摘要:

Objectives

To apply contact measurement and reference point system (RPS) alignment techniques to establish a method for 3D reconstruction of the edentulous jaw models with centric relation and to quantitatively evaluate its accuracy.

Methods

Upper and lower edentulous jaw models were clinically prepared, 10 pairs of resin cylinders with same size were adhered to axial surfaces of upper and lower models. The occlusal bases and the upper and lower jaw models were installed in the centric relation position. Faro Edge 1.8m was used to directly obtain center points of the base surface of the cylinders (contact method). Activity 880 dental scanner was used to obtain 3D data of the cylinders and the center points were fitted (fitting method). 3 pairs of center points were used to align the virtual model to centric relation. An observation coordinate system was interactively established. The straight-line distances in the X (horizontal left/right), Y (horizontal anterior/posterior), and Z (vertical) between the remaining 7 pairs of center points derived from contact method and fitting method were measured respectively and analyzed using a paired t-test.

Results

The differences of the straight-line distances of the remaining 7 pairs of center points between the two methods were X: 0.074 +/- 0.107 mm, Y: 0.168 +/- 0.176 mm, and Z: -0.003 +/- 0.155 mm. The results of paired t-test were X and Z: p >0.05, Y: p <0.05.

Conclusion

By using contact measurement and the reference point system alignment technique, highly accurate reconstruction of the vertical distance and centric relation of a digital edentulous jaw model can be achieved, which meets the design and manufacturing requirements of the complete dentures. The error of horizontal anterior/posterior jaw relation was relatively large.

语种: 英语
所属项目编号: 81271181 ; 2013AA040802
项目资助者: National Natural Science Foundation of China ; National High Technology Research and Development Program ; Scientific Research Staring Foundation for the Returned Overseas Chinese Scholars, Peking University School and Hospital of Stomatology
WOS记录号: WOS:000349444900132
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/57024
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Natl Engn Lab Digital & Mat Technol Stomatol, Beijing, Peoples R China
2.Peking Univ, Sch & Hosp Stomatol, Ctr Digital Dent, Beijing 100871, Peoples R China
3.Peking Univ, Sch & Hosp Stomatol, Fac Prosthodont, Beijing 100871, Peoples R China
4.Minist Hlth, Res Ctr Engn & Technol Digital Dent, Beijing, Peoples R China

Recommended Citation:
Li, Weiwei,Yuan, Fusong,Lv, Peijun,et al. Evaluation of the Quantitative Accuracy of 3D Reconstruction of Edentulous Jaw Models with Jaw Relation Based on Reference Point System Alignment[J]. PLOS ONE,2015,10(2).
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