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学科主题口腔医学
The Validity of In Vivo Tooth Volume Determinations From Cone-Beam Computed Tomography
Liu, Yi2; Olszewski, Raphael3; Alexandroni, Emanuel Stefan4; Enciso, Reyes1; Xu, Tianmin2; Mah, James K.1
关键词Tooth volume Cone-beam CT Segmentation Radiographic Orthodontic
刊名ANGLE ORTHODONTIST
2010
DOI10.2319/121608-639.1
80期:1页:160-166
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Dentistry, Oral Surgery & Medicine
研究领域[WOS]Dentistry, Oral Surgery & Medicine
关键词[WOS]ACCURACY ; CT ; BONE ; QUALITY
英文摘要

Objective: To determine the accuracy of volumetric analysis of teeth in vivo using cone-beam computed tomography (CBCT).

Materials and Methods: The physical volume (Vw) of 24 bicuspids extracted for orthodontic purposes (16 were imaged with the I-CAT and 8 with the CB MercuRay) were determined using the water displacement technique. Corresponding pretreatment CBCT image data were uploaded into Amira 4.0 for segmentation and radiographic volume (Va). All measurements were performed twice by two observers. The statistical difference between Vw and Va was assessed using a paired Hest. The intraobserver and interobserver reliability were determined by calculating Pearson correlation coefficients and intraclass correlation coefficients.

Results: The overall mean Vw of teeth specimens was 0.553 +/- 0.082 cm(3), while the overall mean Va was 0.548 +/- 0.079 cm(3) (0.529 +/- 0.078 cm(3) for observer 1 and 0.567 +/- 0.085 cm(3) for observer 2). There were statistically significant differences between Va and Vw (P < .05). Between observer 1 and observer 2, Va measurements were statistically significantly different (P < .05). The interobserver and intraobserver correlation coefficient for Vw was high. Lastly, surface smoothing reduced the volume by 3% to 12%.

Conclusions: In vivo determination of tooth volumes from CBCT data is feasible. The measurements slightly deviate from the physical volumes within -4% to 7%. Smoothing operations reduce volume measurements. Currently, no requirements for accuracy of volumetric determinations of tooth volume have been established. (Angle Orthod. 2010;80:160-166.)

语种英语
WOS记录号WOS:000274510000024
引用统计
被引频次:37[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/66281
专题北京大学口腔医学院_牙周科
作者单位1.Univ So Calif, Sch Dent, Los Angeles, CA 90089 USA
2.Peking Univ, Dept Orthodont, Sch Stomatol, Beijing 100871, Peoples R China
3.Univ Catholique Louvain, Dept Oral & Maxillofacial Surg, Clin Univ St Luc, B-1200 Brussels, Belgium
4.Univ So Calif, Sch Dent, Div Craniofacial Sci & Therapeut, Los Angeles, CA 90089 USA
推荐引用方式
GB/T 7714
Liu, Yi,Olszewski, Raphael,Alexandroni, Emanuel Stefan,et al. The Validity of In Vivo Tooth Volume Determinations From Cone-Beam Computed Tomography[J]. ANGLE ORTHODONTIST,2010,80(1):160-166.
APA Liu, Yi,Olszewski, Raphael,Alexandroni, Emanuel Stefan,Enciso, Reyes,Xu, Tianmin,&Mah, James K..(2010).The Validity of In Vivo Tooth Volume Determinations From Cone-Beam Computed Tomography.ANGLE ORTHODONTIST,80(1),160-166.
MLA Liu, Yi,et al."The Validity of In Vivo Tooth Volume Determinations From Cone-Beam Computed Tomography".ANGLE ORTHODONTIST 80.1(2010):160-166.
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