Kumaran P Satish, Manikandan G, Anuradha V, Satish Preeti, BalaMurugan R, Kumar Abhinav Anil
Department of Oral and Maxillofacial Surgery, M. R. Ambedkar Dental College and Hospital, Bengaluru, India.
Department of Dentistry, Shri Sathya Sai Medical College and Research Institute, Kancheepuram, Tamil Nadu, India.
Ann Maxillofac Surg. 2020 Jul-Dec;10(2):463-466. doi: 10.4103/ams.ams_264_19. Epub 2020 Dec 23.
Pathologies present in the central zone of the mandible are difficult to access, primarily because of the presence of the inferior alveolar nerve (IAN) and the need to remove a large corticocancellous component to reach the area of interest. Many times, this bony window is replaced as a free graft and there is complete resorption in the long term or even rejection of the graft causing a bony defect which can weaken the mandible. Furthermore, the damage to the IAN is profound. To try and avoid these comorbidities the traditional sagittal split osteotomy was modified to access a central osteoma impinging on the IAN and the successful removal of the same without any comorbidities such as paraesthesia or loss of bone structure. We believe that this modification can be used for other scenarios such as benign cysts and difficult presentations of impacted teeth.
下颌骨中央区域出现的病变难以处理,主要是因为存在下牙槽神经(IAN),并且需要去除大量皮质骨松质成分才能到达感兴趣的区域。很多时候,这个骨窗会作为游离骨块进行复位,长期来看会出现完全吸收,甚至移植物排斥,导致骨缺损,进而削弱下颌骨。此外,对下牙槽神经的损伤也很严重。为了尝试避免这些合并症,对传统的矢状劈开截骨术进行了改良,以处理压迫下牙槽神经的中央骨瘤,并成功将其切除,且未出现任何诸如感觉异常或骨结构丧失等合并症。我们认为这种改良方法可用于其他情况,如良性囊肿和复杂的阻生牙情况。