Abstract:

Objective To investigate the relationship between the thickness of the lateral wall of the maxillary sinus and patient age and sex at different tooth sites to provide a reference for sinus floor elevations. Methods Cone-beam CT（CBCT） imaging data were collected from 222 patients admitted to the Department of Stomatology, the First Hospital of Shanxi Medical University, from March 2020 to October 2020. The thicknesses of the maxillary sinus lateral wall of the first premolar, second premolar, first molar and second molar were observed and measured on the coronal plane of CBCT images, and the relationship between the maxillary sinus lateral wall thickness and patient sex was analyzed. The patients were divided into the following groups according to their age: ①the young group (18~29 years old), ②the middle-aged group (30~59 years old), and ③the elderly group (≥ 60 years old). The difference in the maxillary sinus lateral wall thickness was compared among these three age groups.Results The mean thicknesses of the maxillary sinus lateral wall at the first premolar, second premolar, first molar and second molar were （1.61 ± 0.58） mm, （1.68 ± 0.66） mm, （2.00 ± 0.76） mm and （1.71 ± 0.71） mm, respectively. The maximum thickness of the lateral wall was located at the first molar (P< 0.05). The thickness of the maxillary sinus lateral wall in the young group was significantly thicker than that in the middle-aged group and the elderly group at the first premolar and first molar (P < 0.05). The thickness of the maxillary sinus lateral wall in males was significantly thicker than that in females at the second molar [(1.78 ± 0.80) mm vs. (1.63 ± 0.62) mm, P=0.029].Conclusion The mean thickness of the lateral wall changes at different reference points. The maxillary sinus lateral wall is the thickest at M1. The thickness of the maxillary sinus lateral wall decreased with age, and the thickness of the lateral wall was higher in males than in females.

Key words: maxillary sinus, maxillary sinus lateral wall, bone thickness, sinus floor elevation, lateral window approach, membrane perforation, dental implants, cone-beam CT

摘要：

目的 探讨不同牙位上颌窦外侧壁厚度与年龄、性别的关系,为上颌窦底提升术实施提供参考。方法 选取2020年3月至2020年10月就诊于山西医科大学第一医院口腔科222例患者的锥形束CT（cone-beam CT, CBCT）影像,于CBCT图像的冠状面分别测量上颌第一前磨牙、第二前磨牙、第一磨牙及第二磨牙对应的上颌窦外侧壁厚度,并分析其与性别的关系。根据年龄将患者分为3个组：①青年组（18~29岁）;②中年组（30~59岁）;③老年组（≥ 60岁）,分析不同年龄组上颌窦外侧壁厚度的差异。结果 第一前磨牙、第二前磨牙、第一磨牙和第二磨牙上颌窦外侧壁厚度分别为（1.61 ± 0.58） mm、（1.68 ± 0.66） mm、（2.00 ± 0.76） mm及（1.71 ± 0.71） mm,第一磨牙处最厚,差异有统计学意义（ P< 0.05）;青年组上颌窦外侧壁厚度在第一前磨牙和第一磨牙处均高于中年组和老年组,差异有统计学意义（P< 0.05）;男性上颌窦外侧壁厚度在第二磨牙区高于女性[（1.78 ± 0.80）mmvs.（ 1.63 ± 0.62）mm, P=0.029]。结论 不同牙位对应的上颌窦外侧壁厚度不同,第一磨牙区最厚,上颌窦外侧壁厚度随着年龄的增加而变薄,且男性外侧壁厚度高于女性。

关键词: 上颌窦, 上颌窦外侧壁, 骨厚度, 上颌窦底提升术, 侧壁开窗入路, 黏膜穿孔, 牙种植, 锥形束CT