Bolhari Behnam, Meraji Naghmeh, Nosrat Ali
Department of Endodontics, Dental School, Tehran University of Medical Sciences, Tehran, Iran.
Iran Endod J. 2013 Spring;8(2):72-4. Epub 2013 May 1.
External root resorption of permanent teeth is a multifactorial process. Several etiologic and predisposing factors have been related to external root resorption. Idiopathic external root resorption is defined as cases of external root resorption without a distinct etiologic factor. This article presents an extensive idiopathic external root resorption of maxillary first molar with irreversible pulpitis in an 18-year-old patient. The resorption was diagnosed in conventional radiographs and confirmed with Cone Beam Computed Tomography (CBCT) images. Unlike other reports in this field, and despite the severe resorption of all roots, there was no abnormal tooth mobility. Cold and electric pulp tests confirmed tooth vitality and revealed irreversible pulpitis. Therefore the exact etiology of the resorption remained unclear. Considering the poor prognosis due to severe root resorption, extraction and implant replacement was indicated.
恒牙的外部牙根吸收是一个多因素过程。有几个病因和诱发因素与外部牙根吸收有关。特发性外部牙根吸收被定义为没有明显病因的外部牙根吸收病例。本文介绍了一名18岁患者上颌第一磨牙广泛的特发性外部牙根吸收伴不可逆性牙髓炎。在传统X线片上诊断出牙根吸收，并通过锥形束计算机断层扫描（CBCT）图像得到证实。与该领域的其他报道不同，尽管所有牙根都有严重吸收，但牙齿没有异常松动。冷测和电活力测试证实了牙齿的活力，并显示为不可逆性牙髓炎。因此，牙根吸收的确切病因仍不清楚。考虑到严重牙根吸收导致的预后不良，建议拔除并进行种植修复。
