A cone-beam computed tomographic assessment of the proximity of the maxillary canine and posterior teeth to the maxillary sinus floor: Lessons from 4778 roots
A cone-beam computed tomographic assessment of the proximity of the maxillary canine and posterior teeth to the maxillary sinus floor: Lessons from 4778 roots
复制标题
DOI：
10.1016/j.ajodo.2019.06.018
复制
发表时间：
2020-06-01
影响因子：
3
通讯作者：
Ono, Takashi
中科院分区：
文献类型：
--
作者：
Oishi, Shuji;Ishida, Yuji;Ono, Takashi
当牙根突入上颌窦时，牙在窦底水平移动时，可能发生根尖吸收和倾斜。三维锥束计算机断层扫描（CBCT）图像可以提供详细的信息，没有失真和重叠。我们使用CBCT评估上颌牙根尖与上颌窦底之间的关系。方法：我们评估了76名男性（年龄27.6 +/- 10.4[平均+/-标准差]岁；范围18-69岁）和225名女性（年龄30.4 +/- 12.0岁；范围18-68岁）的4778根。在2张横断面CBCT图像（即矢状面和冠状面）上综合评价上颌牙根尖(包括犬齿、前磨牙（第一和/或第二）、磨牙（第一和/或第二）与上颌窦下壁的位置关系。这些距离是在两幅图像中同时测量的。结果：除第一磨牙颊张根外，矢状面距离均明显大于冠状面距离。Pearson相关检验显示距离与患者年龄呈显著负相关。结论：本研究为规划正畸牙通过上颌窦的运动提供了有价值的信息，有助于预测牙根吸收的发生和严重程度。
Introduction: When tooth roots protrude into the maxillary sinus, apical root resorption and tipping may occur during horizontal tooth movement across the sinus floor. Three-dimensional cone-beam computed tomography (CBCT) images may provide detailed information without distortion and overlap. We evaluated the relationships between the maxillary tooth root apices and the maxillary sinus floor using CBCT. Methods: We evaluated 4778 roots from 76 men (aged 27.6 +/- 10.4 [mean +/- standard deviation] years; range, 18-69 years), and 225 women (aged 30.4 +/- 12.0 years; range, 18-68 years). The positional relationships between the maxillary tooth root apices, including the canine, premolar (first and/or second), and molar (first and/or second), and the inferior wall of the maxillary sinus were comprehensively evaluated on 2 cross-sectional CBCT images (ie, the sagittal and coronal planes). These distances were measured in both images simultaneously. Results: The sagittal plane distances were significantly larger than coronal plane distances, except for the distobuccal root of the first molar. Pearson correlation test revealed a significant negative correlation between the distance and the patient's age. Conclusions: Our study provides valuable information for planning orthodontic tooth movement through the maxillary sinus, which may help to predict the occurrence and severity of root resorption.