Department of Oral and Maxillofacial Radiology, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Department of oral and maxillofacial radiology, School of dentistry, Shahid Beheshti university of medical sciences, Tehran, Iran.
J Long Term Eff Med Implants. 2022;32(2):73-80. doi: 10.1615/JLongTermEffMedImplants.2022040974.
Detection of location of greater palatine foramen (GPF) and its anatomical variations are vital prior to posterior maxillary surgeries. The aim of this study is to determine the anatomical position and size of the greater palatine canal and GPF using cone beam computed tomography (CBCT) scan. To determine the anatomical foramen position, the posterior maxilla area was divided into five regions on the axial view (A to E from the mesial surface of the second molar to distal surface of third molar). The length of the canal was investigated on both coronal and sagittal views. Independent t-test was used to analyze the data. Among 80 females and 68 males, the anatomical position of the GPF was mainly located in region E on the left (55%) and the right (50%), and then, respectively, in region D and region C. The mean diameter of GPF was 4/48 mm on the left and 4/63 mm on the right side (P = 0/01). The average length of the canal on the coronal view was 29.46 mm on the left side and 29.75 mm on the right (P = 0.005). The average length of the canal on the sagittal view was 29.62 mm on the left and 30.02 mm on the right (P = 0.001). The anatomical position of the GPF was primarily located distal to the third maxillary molar. CBCT is a valuable diagnostic tool for evaluation of vital anatomic landmarks in the maxillofacial region prior to surgeries.
在进行上颌后部手术之前，检测腭大孔（GPF）的位置及其解剖变异至关重要。本研究旨在使用锥形束 CT（CBCT）扫描确定腭大管和 GPF 的解剖位置和大小。为了确定解剖孔位置，将上颌后区在轴位视图上分为五个区域（从第二磨牙的近中表面到第三磨牙的远中表面，A 到 E）。研究了冠状面和矢状面的管长度。使用独立 t 检验分析数据。在 80 名女性和 68 名男性中，GPF 的解剖位置主要位于左侧（55%）和右侧（50%）的 E 区，然后分别位于 D 区和 C 区。左侧 GPF 的平均直径为 4/48mm，右侧为 4/63mm（P=0.01）。左侧冠状面管的平均长度为 29.46mm，右侧为 29.75mm（P=0.005）。左侧矢状面管的平均长度为 29.62mm，右侧为 30.02mm（P=0.001）。GPF 的解剖位置主要位于第三磨牙远侧。CBCT 是评估上颌面部手术前重要解剖标志的有价值的诊断工具。
