Itokawa Takumi, Yamaguchi Kikue, Yagi Kotaro, Araki Kazuyuki, Sato Daisuke, Munakata Motohiro
Department of Implant Dentistry, Showa University Graduate School of Dentistry, 2-1-1 Kita-senzoku, Ota-ku, Tokyo 145-8515, Japan.
Department of Implant Dentistry, Showa University School of Dentistry, 2-1-1 Kita-senzoku, Ota-ku, Tokyo 145-8515, Japan.
Bioengineering (Basel). 2025 Feb 26;12(3):240. doi: 10.3390/bioengineering12030240.
Prosthesis for missing maxillary molars with dental implants often requires maxillary sinus augmentation owing to insufficient alveolar bone height. However, the anatomical structure of the maxillary sinus is a significant risk factor. This study used preoperative cone-beam computed tomography (CBCT) to investigate changes in the anatomical structure of the maxillary sinus due to tooth loss and conducted an epidemiological survey of Japanese people to determine the effects of gender and age on these changes. Preoperative CBCT scans were analyzed in patients aged ≥ 50 years with free-end maxillary molar edentulism involving ≥ 2 missing teeth seeking implant treatment. Statistical analyses were performed. One hundred and twenty participants (46 males, 74 females; mean age, 62.1 ± 7.4 years) with 3.0 ± 0.9 missing teeth and an existing bone volume of 6.2 ± 3.1 mm were included. Lateral wall thickness, sinus angle, sinus membrane thickness, maxillary sinus length and width, and the presence of the sinus septa significantly differed between missing and non-missing sides. Maxillary sinus height and sinus membrane thickness on missing side and maxillary sinus height and width on non-missing side varied significantly. Aging was associated with maxillary sinus length and width changes on the non-missing side in males, whereas no age-associated effects were identified in females. To ensure the safe execution of maxillary sinus augmentation, a thorough understanding of maxillary sinus anatomy is crucial prior to surgery.
由于牙槽骨高度不足，采用牙种植体修复上颌磨牙缺失的假体通常需要进行上颌窦提升术。然而，上颌窦的解剖结构是一个重要的风险因素。本研究利用术前锥形束计算机断层扫描（CBCT）来研究因牙齿缺失导致的上颌窦解剖结构变化，并对日本人进行了一项流行病学调查，以确定性别和年龄对这些变化的影响。对年龄≥50岁、上颌游离端磨牙缺失≥2颗且寻求种植治疗的患者进行术前CBCT扫描分析，并进行统计分析。纳入120名参与者（46名男性，74名女性；平均年龄62.1±7.4岁），缺失牙齿3.0±0.9颗，现有骨量6.2±3.1mm。缺失侧与非缺失侧的侧壁厚度、窦角、窦膜厚度、上颌窦长度和宽度以及窦间隔的存在情况存在显著差异。缺失侧的上颌窦高度和窦膜厚度以及非缺失侧的上颌窦高度和宽度有显著变化。衰老与男性非缺失侧上颌窦长度和宽度的变化有关，而在女性中未发现与年龄相关的影响。为确保上颌窦提升术的安全实施，术前全面了解上颌窦解剖结构至关重要。
