根管系统内管间峡区的研究进展

Research Progress of the Canal Isthmus in the Root Canal System

根管管间峡区是同一牙根内、两根管间,含有牙髓或牙髓生成组织的一种狭窄带状结构。常规根管治疗难以对根管管间峡区进行机械清理、成形及充填,可因管间峡区的存在而最终导致治疗失败。对根管管间峡区的诊断和治疗,是牙髓外科手术成功的关键。牙科手术显微镜、内镜等先进设备的引进有助于提高根管管间峡区的诊断精确度和治疗成功率。

An isthmus is defined as a narrow, ribbon-shaped communication between two root canals that contains pulp tissues, It can act as a bacterial reservoir which is difficult to prepare, shape and fill, and thus accounts for the failure of root canal therapy, The location and treatment of the canal isthmus may be a prerequisite to successful surgical endodontics. Now, with the adjunct of dental operating microscope and endoscope in routine endodontic procedures, clinicians can view the resected root surface better, identify and prepare the isthmus. The recognition and management of the canal isthmus may be advantageous in increasing the success rate of surgical endodontics.