Mirbeigi Sanam, Kazemipoor Maryam, Khojastepour Leila
Department of Oral and Maxillofacial Radiology, Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Department of Endodontics, Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Pol J Radiol. 2016 Jul 19;81:338-41. doi: 10.12659/PJR.896229. eCollection 2016.
The frequent anatomical variations of the inferior alveolar nerve (IAN) course should be considered prior to any treatment in this area. The aim of this study was to evaluate the course of the inferior alveolar canal (IAC) as it appears in the archived CBCT images of the mandible.
MATERIAL/METHOD: This cross- sectional study evaluated a sample of 156 CBCT examinations. The pattern of the IAC was evaluated and the prevalence of different patterns according to age and gender were recorded. In order to find the frequency of mandibular canal type among different ages, the patients were put into the three age groups (20-29, 30-44 and 45-59).The data were analyzed using Chi-square test and the significance level was set as p≤.05.
Out of 156 patients, 52 canals was straight type, 52 had Catenary type and 52 of them were presented with Progressive descending type. There was not statistically significant difference between two genders (Pv=0.092). According to the type of the IAC course, there was a not statistically significant difference between the three age groups (Pv=0.32).
Cone beam computed tomography is a useful method for precise assessment of the IAC course.
在对该区域进行任何治疗之前，应考虑下牙槽神经（IAN）走行常见的解剖变异。本研究的目的是评估下颌骨存档CBCT图像中下牙槽管（IAC）的走行情况。
材料/方法：这项横断面研究评估了156例CBCT检查样本。评估IAC的形态，并记录不同形态根据年龄和性别的患病率。为了找出不同年龄组下颌管类型的频率，将患者分为三个年龄组（20 - 29岁、30 - 44岁和45 - 59岁）。使用卡方检验分析数据，显著性水平设定为p≤0.05。
156例患者中，52例为直线型管，52例为悬链线型，52例为渐进下降型。两性之间无统计学显著差异（Pv = 0.092）。根据IAC走行类型，三个年龄组之间无统计学显著差异（Pv = 0.32）。
锥形束计算机断层扫描是精确评估IAC走行的有用方法。
