Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Gazi University, Emek/Çankaya, 06510 Ankara, Turkey.
Br J Oral Maxillofac Surg. 2021 May;59(4):419-424. doi: 10.1016/j.bjoms.2020.08.038. Epub 2020 Aug 19.
Maxillary sinus septa increase the risk of membrane perforation during sinus floor elevation and grafting operations. This study was designed to evaluate the prevalence, morphology, localisation, aetiology, and orientation of maxillary sinus septa in dentate, completely edentulous, and partially edentulous sinus regions using cone beam computed tomography (CBCT), and possible patient-related factors were also assessed. Data from 300 patients (600 sinuses), 160 women and 140 men, with a mean (SD) age of 50.72 (13.99) years (range 20-83), who were undergoing treatment planning for implant-supported restorations in posterior maxillae, were analysed from reformatted CBCT scans. Sinus septa were detected in 132 (44%) patients. A total of 208 septa were found, and 187 (31.17%) single maxillary sinuses presented septa in 600 sinuses. Unilateral septa were found in 77 patients (58.3%) and bilateral septa in 55 patients (41.7%). Out of the 208 septa, 42 (20.19%) were in the anterior third, 124 (59.62%) were in the middle third, and 42 (20.19%) were in the posterior third. Further, 106 (50.96%) septa were in completely edentulous regions, 64 (30.77%) were in partially edentulous regions, and 38 (18.27%) were in dentate regions. The prevalence of septa was significantly higher in the middle third area of the completely edentulous sinus regions. The mean (SD) height of septa was 6.34 (3.05) mm, and the mean orientation was buccopalatal in 204 patients (98.08%). Maxillary sinus septa are common anatomical structures. To avoid possible complications during sinus augmentation, a detailed radiographic identification of anatomical structures in maxillary sinuses is needed.
上颌窦分隔增加了在鼻窦底提升和移植手术中发生膜穿孔的风险。本研究旨在使用锥形束计算机断层扫描 (CBCT) 评估有牙、完全无牙和部分无牙窦区上颌窦分隔的发生率、形态、定位、病因和方向，并评估可能与患者相关的因素。从接受上颌后牙种植修复治疗计划的 300 名患者（600 个窦）的重建 CBCT 扫描中分析了数据，这些患者中包括 160 名女性和 140 名男性，平均（标准差）年龄为 50.72（13.99）岁（范围为 20-83）。在 132 名（44%）患者中发现了窦分隔。共发现 208 个分隔，在 600 个窦中，187 个（31.17%）单个上颌窦存在分隔。77 名患者（58.3%）存在单侧分隔，55 名患者（41.7%）存在双侧分隔。在 208 个分隔中，42 个（20.19%）在前三分之一，124 个（59.62%）在中三分之一，42 个（20.19%）在后三分之一。此外，106 个分隔（50.96%）位于完全无牙区，64 个分隔（30.77%）位于部分无牙区，38 个分隔（18.27%）位于有牙区。完全无牙窦区中三分之一区域分隔的发生率明显更高。分隔的平均（标准差）高度为 6.34（3.05）mm，204 名患者（98.08%）的平均方向为颊腭向。上颌窦分隔是常见的解剖结构。为了避免鼻窦增强过程中可能出现的并发症，需要对上颌窦内的解剖结构进行详细的影像学识别。
