Udoye Christopher I, Jafarzadeh Hamid, Kinoshita Jun-Ichiro, Manabe Atsufumi, Kobayashi Mikihiro
Faculty of Dentisty, College of Medicine, University of Nigeria, Enugu Campus, Nigeria.
Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Islamic Republic of Iran, Phone: +98-51-38829501, e-mail:
J Contemp Dent Pract. 2018 Dec 1;19(12):1469-1473.
Teeth extraction is an important problem in elder patients. Although some of these teeth have been endodontically treated, many of them may be subjected to extraction. The reasons for extraction are important for prevention planning in further patients. The aim of this study was to assess the prevalence and important reasons for extraction of endodontically treated teeth in adult Nigerians.
This study involved a retrospective examination of 2,000 case files in the archives of the University of Nigeria Teaching Hospital. Out of the 2,000 case files, 650 concerned endodontically treated teeth.
The prevalence of extractions in the population was 21.5%. This was more often in the mandible (67.9%) than in the maxilla (32.1%). In both jaws, more molars were extracted (57.1%), followed by premolars (27.1%) and anterior teeth (15.7%). Extractions occurred 57.1% of times in females. However, the rate of extraction decreased with age but peaked in the 51-60 year age band.
The association between age and extraction was proven. Caries, vertical root fracture and endodontic reasons accounted for the commonest cause of extraction in the mandible; while in the maxilla, endodontic reasons and cusp fracture caused extractions most often.
The reasons for extraction of endodontically treated teeth are different between maxilla and mandible.
拔牙是老年患者面临的一个重要问题。尽管其中一些牙齿已经接受了根管治疗，但仍有许多可能需要拔除。拔牙原因对于后续患者的预防规划很重要。本研究的目的是评估成年尼日利亚人根管治疗后牙齿拔除的患病率及主要原因。
本研究对尼日利亚大学教学医院档案中的2000份病例进行了回顾性检查。在这2000份病例中，650份涉及根管治疗的牙齿。
该人群中拔牙的患病率为21.5%。下颌骨的拔牙情况（67.9%）比上颌骨（32.1%）更为常见。在上下颌中，磨牙拔除的比例更高（57.1%），其次是前磨牙（27.1%）和前牙（15.7%）。女性拔牙的比例为57.1%。然而，拔牙率随年龄增长而下降，但在51 - 60岁年龄组达到峰值。
年龄与拔牙之间的关联得到证实。龋齿、垂直根折和根管治疗相关原因是下颌骨拔牙最常见的原因；而上颌骨中，根管治疗相关原因和牙尖折是导致拔牙最常见的原因。
上颌骨和下颌骨根管治疗后牙齿拔除的原因不同。
