Endodontic Postgraduate Unit, King's College, London Dental Institute, London, United Kingdom.
J Endod. 2010 Jul;36(7):1107-21. doi: 10.1016/j.joen.2010.03.014. Epub 2010 May 20.
Internal root resorption is the progressive destruction of intraradicular dentin and dentinal tubules along the middle and apical thirds of the canal walls as a result of clastic activities.
The prevalence, etiology, pathogenesis, histologic manifestations, differential diagnosis with cone beam computed tomography, and treatment perspectives involved in internal root resorption are reviewed.
The majority of the documentation that exists in the literature is in the form of case reports, and there are only a limited number of studies that attempted to examine the histologic manifestations and biologic aspects of the disease. This might be due, in part, to the relatively rare occurrence of this type of resorption and the lack of an in vivo model, apart from the previous attempt on the use of diathermy, to predictably reproduce the condition for study. From a histologic perspective, internal root resorption is manifested in one form that is purely destructive, internal (root canal) inflammatory resorption, and another that is accompanied by repair, internal (root canal) replacement resorption that is featured by the deposition of metaplastic bone/cementum-like tissues adjacent to the sites of resorption.
From a differential diagnosis perspective, the advent of cone beam computed tomography has considerably enhanced the clinician's capability of diagnosing internal root resorption. Nevertheless, root canal treatment remains the treatment of choice for this pathologic condition to date.
内吸收是由于碎屑活动导致根管内壁的中三分之一和根尖三分之一处的牙本质和牙本质小管渐进性破坏。
本文回顾了内吸收的流行率、病因、发病机制、组织学表现、与锥形束 CT 的鉴别诊断以及治疗前景。
文献中大部分的资料都是病例报告，只有少数研究试图检查疾病的组织学表现和生物学方面。这可能部分归因于这种类型的吸收相对罕见，并且缺乏体内模型，除了以前尝试使用透热疗法有预测性地复制该条件进行研究之外。从组织学的角度来看，内吸收表现为一种纯粹的破坏性的内（根管）炎症性吸收，另一种则伴有修复，内（根管）替代性吸收的特征是在吸收部位附近沉积了牙骨质样组织。
从鉴别诊断的角度来看，锥形束 CT 的出现极大地增强了临床医生对内吸收的诊断能力。然而，根管治疗仍然是目前治疗这种病理状况的首选方法。
