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《West China Journal of Stomatology》 2014-01
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Investigation of accuracy of premolar length measured by cone beam CT in vivo

Feng Chi;Li Conghua;Zeng Xingqi;Wang Qinhua;Zheng Qian;Qiu Ye;Dept. of Oral and Maxillofacial Surgery, The Affiliated Hospital of Stomatology, Chongqing Medical University;Chongqing Key Laboratory for Oral Diseases and Biomedical Sciences;University Town Clinic, The Affiliated Hospital of Stomatology, Chongqing Medical University;State Key Laboratory of Oral Diseases, Dept. of Cleft and Palate Surgery, West China Hospital of Stomatology, Sichuan University;  
Objective To investigate the feasibility and accuracy of length measurement of in vivo teeth by using cone beam CT(CBCT). Methods Before orthodontic extraction, 109 vital premolars from 40 participants were scanned by using CBCT and reconstructed by using InVivoDental software. Buccal-lingual sectional images along the long axis of teeth were then acquired, and the crown, root, and tooth length were measured separately. After careful extraction and fixation, the corresponding length of the same tooth was measured by using a digital caliper. CBCT measurement accuracy was then verified by using physical measurements as reference. Results CBCT and the physical method did not obtain significantly different measurements of the root, crown, and tooth length of experimental teeth(P=0.790, P=0.621, P=0.657, respectively), and the measurements were found to be consistent. The 95% limits of agreement of root, crown, and tooth length were-1.10 mm to 1.13 mm,-1.00 mm to 0.96 mm, and-1.00 mm to 1.05 mm, respectively. Conclusion The difference between CBCT and the physical method was not significant, and good consistency was shown. CBCT could be applied in noninvasive measurement of in vivo teeth.
【Fund】: 重庆市科学技术委员会基金资助项目(cstc2013jcyjA10010)
【CateGory Index】: R816.98
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【Co-citations】
Chinese Journal Full-text Database 8 Hits
1 Shen Yueteng;Hu Lulu;Song Jinlin;Deng Feng;Gao Xiang;Department of Orthodontics,Chongqing Research Center for Oral Diseases and Biomedicine,Affiliated Hospital of Stomatology,Chongqing Medical University;Department of Orthodontics,Affiliated Hospital of Stomatology,Anhui Medical University;;Surrounding bone density of maxillary posterior region with inserted micro implant by cone beam computed tomography[J];Journal of Third Military Medical University;2013-19
2 YIN Linling,SONG Meng,FENG Yimiao.(Department of Stomatology,Shanghai First People's Hospital,Shanghai 200080,China);Orthodontic treatment for adult patients with palatally and horizontally impacted maxillary canine in skeletal class Ⅲ malocclusion[J];Stomatology;2013-08
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4 XIANG Rong-hui;MING Zhi-qiang;CHEN Ding-gen;ZHOU Lin-hong;Department of Orthodontics, College of Stomatology, Chongqing Medical University;Department of Stomatology, North Sichuan Medical College;Department of Stomatology, Yongchuan Affiliated Hospital, Medical University;;Applying cone beam computed tomography(CBCT) to measure the root length of the impacted maxillary canines treated with different eruptions[J];Laser Journal;2014-03
5 LIU Xiaojing;WANG Ping;LU Qun;School of Stomatology,The Fourth Military Medical University;;Morphologic study on the furcation groove of buccal root of maxillary first premolars by micro-computed tomography[J];Journal of Practical Stomatology;2013-06
6 LU Lu;LI He;YAN Yi;GUO Jing;Department of Orthodontics,School of Stomatology,Shandong University;Shandong Provincial Key Laboratory of Oral Biomedicine;Department of Stomatology,People's Hospital of Lixia District of Jinan;;Root resorption associated w ith self-ligating versus conventional ligating orthodontic bracket systems: a systematic review[J];Journal of Shandong University(Health Sciences);2014-01
7 LIU Meng-meng;LIU Lin;Graduate School of Dalian Medical University;;Application of cone-beam computed tomography to orthodontic diagnosis and treatment.[J];Chinese Journal of Practical Stomatology;2013-10
8 TIANYu lou;LIUFang;LüPin;HANKun;ZHAOXiu liang;LIUMing;Liaoning Institute of Dental Research,Department of Orthodontics,School of Stomatology,China Medical University;Department of Radiology,School of Stomatology,China Medical University;;Application of Cone Beam Computed Tomography for Diagnosis of Incisor Root Resorption Caused by Impacted Maxillary Canine[J];Journal of China Medical University;2013-11
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