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Basic Study | Publishing Language: Chinese | Open Access

Evaluation of 3D-printed oval root canal preparation by small field-of-view cone beam CT and computer-aided technique

Yiwei WANG1, Wenjun XIA1, Zisheng TANG1( ), Xiaohe BIAN1, Zhengnan QI1, Lingnv ZHAN1, Yan ZOU1, Haoyi LIN2, Minjun DONG2, Ling ZHU2
Department of Endodontics, Ninth People′s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology; National Clinical Research Center of Stomatology, Shanghai 200011, China
Department of Oral Radiology, Ninth People′s Hospital, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology; National Clinical Research Center of Stomatology, Shanghai 200011, China
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Abstract

Objective

To evaluate the effect of 3D-printed oval root canal preparation by using small field-of-view cone beam CT (CBCT) combined with computer-aided technologies.

Methods

An extracted tooth with a suitable single oval canal was selected by small field-of-view CBCT scanning. Three-dimensional (3D)-printed resin teeth were obtained based on the CBCT data after data conversion and processing. 50 general dentists were selected to prepare the oval root canal of the resin teeth with X-Gold rotary Ni-Ti instruments. Small field-of-view CBCT was applied to scan the oval root canals before and after preparation. Then, computer-aided technologies were used to calculate and compare these CBCT data, analyzing the effects of oval root canal cleaning as well as the root canal deviation by 3D reconstruction and rendering of the images.

Results

Among the 50 cases, the mean unprepared area of the oval root canal wall was (56.20 ± 11.91)% and the mean maximum deviation distance of the root canal was (0.140 ± 0.041) mm. There was no correlation between root canal cleanliness and deviation (r＝0.18, P＝0.212).

Conclusion

Combined with small field-of-view CBCT and computer-aided technology, we can effectively quantitatively evaluate the root canal preparation effect.

Keywords

computer-aided technologiesCBCT3D printingroot canal preparationoval root canalroot canal cleanlinessroot canal deviation
CLC number: R781 Document code: A Article ID: 2096-1456(2020)11-0710-04

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Journal of Prevention and Treatment for Stomatological Diseases
Volume 28 Issue 11,
November 2020
Pages 710-713
DOI: 10.12016/j.issn.2096-1456.2020.11.005

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WANG Y, XIA W, TANG Z, et al. Evaluation of 3D-printed oval root canal preparation by small field-of-view cone beam CT and computer-aided technique. Journal of Prevention and Treatment for Stomatological Diseases, 2020, 28(11): 710-713. https://doi.org/10.12016/j.issn.2096-1456.2020.11.005

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Received: 06 May 2020
Revised: 21 June 2020
Published: 20 November 2022
© 2020 by Editorial Department of Journal of Prevention and Treatment for Stomatological Diseases

This article is licensed under a Creative Commons Attribution 4.0 International License.