College of Dental Medicine, QU Health, Qatar University, P.O. Box: 2713, Doha, Qatar.
Department of Prosthodontics, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, P.O. Box 3030, Jordan.
Oral Radiol. 2023 Jul;39(3):504-516. doi: 10.1007/s11282-022-00663-6. Epub 2022 Nov 15.
To evaluate and compare the maxillary sinus (MS) dimensions and volume in unilaterally displaced palatal and buccal maxillary canines.
CBCT images for 133 patients were included in the study. Maxillary canines were unilaterally displaced palatally in 83 patients (PDCs) and buccally in 50 patients(BDCs). The following variables were measured: canine position in relation to MS walls, MS pneumatization and MS dimensions and volume.
MS was extended to the incisor region in 10% and 13% and to the canine region in 48% and 23% in BDCs and PDCs subjects, respectively. In BDC subjects, maxillary canine crown tip was more laterally (24.23 mm compared to 22.93 mm (p < 0.05)) and closer vertically (5.82 mm compared to 9.58 mm (p < 0.001)) to the MS, maxillary canine root tip was closer to the MS anterior (0 mm compared to 1.64 mm (p < 0.05)) and lateral (19.70 mm compared to 22.02 mm (p < 0.001)) walls and the MS volume (11.57mm compared to 9.09 mm (p < 0.001)) was increased in the displaced side compared to the non-displaced side. In PDC subjects, a significant difference between the displaced and non-displaced sides was detected in the vertical (3.28 mm compared to 5.89 mm (p < 0.001)) and lateral (21.63 mm compared to 24.25 mm (p < 0.001)) position of maxillary canine to the MS wall, the anterior (- 0.84 mm compared to 1.13 mm (p < 0.05)) and lateral (20.48 mm compared to 22.44 mm (p < 0.001)) position of canine root tip to the MS and the MS volume (7.71mm compared to 9.14mm (p < 0.001)). PDC sides differed from BDC sides in the lateral and vertical position of canine crown tip to MS and in MS volume. PDC showed negative association with MS volume and anteroposterior skeletal relationship and a positive association with MS height.
PDCs subjects have a reduced MS volume and BDCs subjects have an increased MS volume. PDCs are associated with reduced MS volume, increased MS height and Class III skeletal relationship.
评估并比较单侧腭侧和颊侧移位上颌尖牙的上颌窦（MS）的尺寸和容积。
纳入了 133 名患者的 CBCT 图像。83 名患者的上颌尖牙单侧腭侧移位（PDC），50 名患者的上颌尖牙颊侧移位（BDC）。测量以下变量：尖牙相对于 MS 壁的位置、MS 气腔化和 MS 尺寸和容积。
BDC 组中，MS 延伸到切牙区的比例为 10%和 13%，延伸到尖牙区的比例为 48%和 23%。在 BDC 组中，上颌尖牙冠端更偏向外侧（24.23mm 比 22.93mm（p<0.05））和更靠近垂直方向（5.82mm 比 9.58mm（p<0.001））到 MS，上颌尖牙根端更靠近 MS 前壁（0mm 比 1.64mm（p<0.05））和侧壁（19.70mm 比 22.02mm（p<0.001）），MS 容积（11.57mm 比 9.09mm（p<0.001））在移位侧增加。在 PDC 组中，与非移位侧相比，移位侧和非移位侧之间在 MS 壁的垂直位置（3.28mm 比 5.89mm（p<0.001））和侧向位置（21.63mm 比 24.25mm（p<0.001））、上颌尖牙根端到 MS 的前向（-0.84mm 比 1.13mm（p<0.05））和侧向位置（20.48mm 比 22.44mm（p<0.001））以及 MS 容积（7.71mm 比 9.14mm（p<0.001））有显著差异。PDC 侧与 BDC 侧相比，MS 尖牙冠端和 MS 的侧向和垂直位置以及 MS 容积存在差异。PDC 与 MS 容积和骨骼前后向关系呈负相关，与 MS 高度呈正相关。
PDC 组的 MS 容积减少，BDC 组的 MS 容积增加。PDC 与 MS 容积减少、MS 高度增加和 III 类骨骼关系有关。
