Prakash Om, Srivastava Pankaj Kumar, Jyoti Bhuvan, Mushtaq Rafiya, Vyas Tarun, Usha Purumandla
Department of Oral and Maxillofacial Surgery and Oral Implantology, Dental Institute, RIMS, Ranchi, India.
Department of Dental Surgery, G.S.V.M. Medical College, Kanpur, Uttar Pradesh, India.
Niger J Surg. 2018 Jul-Dec;24(2):90-94. doi: 10.4103/njs.NJS_1_18.
A well awareness of the variation of inferior alveolar canal is mandatory to avoid iatrogenic complication. This study was conducted among 90 patients to determine variation in inferior alveolar nerve (IAN) loop through cone-beam computed tomography (CBCT) images.
CBCT images of 90 patients were involved in this study. All images were studied by the expert radiologist to see Type I, Type II, and Type III pattern of IAN canal (IANC). Results were subjected to statistical analysis for correct inferences.
Forty males and 50 females were included in the study. The difference was statistically nonsignificant ( = 0.5). Type I pattern was seen in 26 patients, Type II in 19, and Type III in 45 patients. The difference was statistically significant ( < 0.05). The most prevalent pattern was Type III (males - 15 and females - 30), followed by Type I (males - 14 and females - 12) and Type II (males - 11 and females - 8). There was statistical significance difference between males and females in Type II ( < 0.05).
The anterior loop of IAC is quite common and IANC may show variation in structure. The most common pattern recorded was Type III. CBCT is very useful in the detection of IANC.
充分了解下牙槽管的变异对于避免医源性并发症至关重要。本研究对90例患者进行，以通过锥形束计算机断层扫描（CBCT）图像确定下牙槽神经（IAN）袢的变异情况。
本研究纳入了90例患者的CBCT图像。所有图像均由专业放射科医生进行研究，以观察IAN管（IANC）的I型、II型和III型模式。对结果进行统计分析以得出正确推论。
本研究纳入了40名男性和50名女性。差异无统计学意义（P = 0.5）。26例患者表现为I型模式，19例为II型，45例为III型。差异有统计学意义（P < 0.05）。最常见的模式是III型（男性 - 15例，女性 - 30例），其次是I型（男性 - 14例，女性 - 12例）和II型（男性 - 11例，女性 - 8例）。II型在男性和女性之间存在统计学显著差异（P < 0.05）。
IAC的前袢相当常见，IANC可能存在结构变异。记录到的最常见模式是III型。CBCT在IANC的检测中非常有用。
