Departmental Papers (Dental)

Document Type

Journal Article

Date of this Version


Publication Source

Case Reports in Dentistry



Start Page

Article number 7546842




Apexification is widely applied in teenager patients but rarely used in the adult population. Instead, artificial apical barrier with mineral trioxide aggregate (MTA) is clinically accepted, and spontaneous apical closure in nonvital immature teeth of adult patients has rarely been encountered while only apexification of the maxillary incisors in adult patients has been reported. The aim of this case report is to share a successful apexification application in the mandibular premolar with a blunderbuss apex and periapical lesion of an adult patient by using calcium hydroxide: radiographically, spontaneous hard tissue barrier has been established, and narrowing canal space and decreasing area of periapical shadow were documented without complications. Taken together, our study indicates that patient's age and tooth position may not be the critical limitation for apexification. © 2019 Chenshuang Li et al.


At the time of publication, author Chenshuang Li was affiliated with the College of Stomatology, Xi'An Jiaotong University and the Section of Orthodontics, University of California. Currently, (s)he is a faculty member at the School of Dental Medicine at the University of Pennsylvania.



Date Posted: 10 February 2023

This document has been peer reviewed.