Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Apr 26, 2021; 9(12): 2944-2950
Published online Apr 26, 2021. doi: 10.12998/wjcc.v9.i12.2944
Separated root tip formation associated with a fractured tubercle of dens evaginatus: A case report
Zhi-Fang Wu, Ling-Jiao Lu, Hai-Yan Zheng, Yan Tu, Ying Shi, Zi-Huai Zhou, Lin-Xian Fang, Bai-Ping Fu
Zhi-Fang Wu, Lin-Xian Fang, Department of Pediatric Dentistry, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310006, Zhejiang Province, China
Ling-Jiao Lu, Hai-Yan Zheng, Ying Shi, Zi-Huai Zhou, Bai-Ping Fu, Department of Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310006, Zhejiang Province, China
Yan Tu, Department of Endodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310006, Zhejiang Province, China
Author contributions: Wu ZF and Tu Y were the patient’s dentists, reviewed the literature and contributed to manuscript drafting; Lu LJ, Zheng HY and Zhou ZH reviewed the literature and contributed to manuscript drafting; Shi Y and Fang LX analyzed and interpreted the imaging findings; Fu BP were responsible for the revision of the manuscript for important intellectual content; All authors issued final approval for the version to be submitted.
Supported by National Natural Science Foundation of China, No. 81801028; and Natural Science Foundation of Zhejiang Province, No. LQ19H140001.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflict of interest.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Corresponding author: Bai-Ping Fu, PhD, Director, Professor, Department of Prosthodontics, The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Key Laboratory of Oral Biomedical Research of Zhejiang Province, No. 395 Yan’an Road, Hangzhou 310006, Zhejiang Province, China. fbp@zju.edu.cn
Received: January 7, 2021
Peer-review started: January 7, 2021
First decision: January 24, 2021
Revised: January 25, 2021
Accepted: February 24, 2021
Article in press: February 24, 2021
Published online: April 26, 2021
Processing time: 97 Days and 12.6 Hours
Core Tip

Core Tip: Studies have reported an unusual root formation where a fractured apical fragment of an immature root continued to develop independent of the main root after trauma to an immature tooth. There are only rare reports of continuing apical formation of the fractured root associated with dens evaginatus. We present a case of a separated root tip formation associated with a fractured tubercle of dens evaginatus. The case highlights that clinicians should be aware that even if the tubercle of dens evaginatus is fractured in an immature tooth, the root tip may be separated from the main root and completely formed.