Srivastava Swati, Alharbi Hanan M, Alharbi Afnan S, Soliman Mai, Eldwakhly Elzahraa, Abdelhafeez Manal M
Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraydah 51452, Saudi Arabia.
General Dentistry, College of Dentistry, Qassim University, Buraydah 51452, Saudi Arabia.
J Pers Med. 2022 Oct 28;12(11):1784. doi: 10.3390/jpm12111784.
Various endodontic interventions often lead to iatrogenic damage to the inferior alveolar nerve present in the inferior alveolar canal (IAC). The purpose of the present study was to analyze the relationships of IAC with the root apices of mandibular teeth and with the mandibular cortical plates.
116 cone beam computed tomography (CBCT) scans were examined and the shortest distance of IAC with the root apices of mandibular canines, premolars and molars, and with cortical plates was analyzed. The data were statistically analyzed using SPSS.
The shortest mean distance between IAC and lingual cortical plate (LCP) was found in the third molar area, and between IAC and buccal cortical plate (BCP) in the second premolar area. A high incidence of 60% direct communication (DC) was present in mandibular second molars; 38% in mandibular third molars; 13% in mandibular second premolars; 12% in mandibular first molars; and 1% in mandibular first premolars.
Anteriorly, IAC was found to be significantly present in close approximation to the roots of mandibular canines. Posteriorly, IAC was found to be in significant proximity to the distal roots of mandibular second molars.
各种牙髓治疗干预措施常常会对存在于下颌神经管（IAC）中的下牙槽神经造成医源性损伤。本研究的目的是分析下颌神经管与下颌牙齿根尖以及下颌骨皮质板之间的关系。
对116例锥形束计算机断层扫描（CBCT）进行了检查，并分析了下颌神经管与下颌尖牙、前磨牙和磨牙根尖以及皮质板之间的最短距离。使用SPSS对数据进行统计学分析。
在下颌第三磨牙区域发现下颌神经管与舌侧皮质板（LCP）之间的最短平均距离，在下颌第二前磨牙区域发现下颌神经管与颊侧皮质板（BCP）之间的最短平均距离。下颌第二磨牙中存在60%的高发生率的直接连通（DC）；下颌第三磨牙中为38%；下颌第二前磨牙中为13%；下颌第一磨牙中为12%；下颌第一前磨牙中为1%。
在前部，发现下颌神经管明显紧邻下颌尖牙的牙根。在后部，发现下颌神经管明显紧邻下颌第二磨牙的远中根。
