Li Chenshuang, Zheng Zhong, Deng Xiaohong, Zhang Lan, Wang Baoyan, Guo Qingyu, Zou Min
College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
Division of Growth and Development, Section of Orthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, CA 90095, USA.
Case Rep Dent. 2019 Apr 9;2019:7546842. doi: 10.1155/2019/7546842. eCollection 2019.
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.
根尖诱导成形术广泛应用于青少年患者，但在成人中很少使用。相反，临床上采用含三氧化矿物凝聚体（MTA）的人工根尖屏障，成人非活髓未成熟牙的根尖自然闭合很少见，仅有成人上颌切牙根尖诱导成形术的报道。本病例报告的目的是分享一例成年患者下颌前磨牙呈喇叭口状根尖及根尖周病变采用氢氧化钙成功进行根尖诱导成形术的病例：影像学检查显示，已形成自发硬组织屏障，根管空间变窄，根尖阴影面积减小，且无并发症。综上所述，我们的研究表明患者年龄和牙齿位置可能不是根尖诱导成形术的关键限制因素。
