Department of Orthodontics, Armed Forces Institute of Dentistry, Rawalpindi, Pakistan.
Department of Dental Education, Foundation University Islamabad, Islamabad, Pakistan.
J Coll Physicians Surg Pak. 2023 Jul;33(7):732-737. doi: 10.29271/jcpsp.2023.07.732.
To evaluate the relationship between maxillary posterior teeth roots to maxillary sinus floor (MSF) using three-dimensional imaging and to evaluate the correlation of vertical facial biotype, gender, and age to the proximity of posterior roots to the sinus.
Observational, Cross-sectional study. Place and Duration of the Study: Department of Orthodontics, Armed Forces Institute of Dentistry, Combined Military Hospital, Rawalpindi, from January 2021 to July 2022.
Three-dimensional CBCT scans of 100 patients aged between 13 to 43 years were evaluated and divided into three matching groups based on vertical face forms i.e. hyperdivergent, normodivergent, and hypodivergent. Root proximity to maxillary sinus was scored (0-3) for each scan. Nonparametric Wilcoxon Mann Whitney U test and Kruskal Wallis test were used to compare average tooth and patient scores to vertical face type, age, and gender.
Out of 100 patients, 54 were males and 46 were females with 44% aged between 13-23 years, 27% between 24 to 33 years, and 29% between 34 to 43 years. Average patient and tooth scores were highest in the hyperdivergent face type (p<0.001). No statistically significant relation was found between gender and degree of root proximity to MSF (p>0.05). Age was negatively correlated to root sinus wall connection (p<0.001).
Patients with hyperdivergent face forms are at greater risk of root resorption and prolonged orthodontic treatment due to the closer proximity of root apices to the maxillary sinus as compared to hypodivergent and normodivergent face forms. Moreover, roots were farther from the maxillary sinus wall with advanced age.
Maxillary sinus, Cone beam computed tomography, Face.
通过三维成像评估上颌后牙根部与上颌窦底（MSF）之间的关系，并评估垂直面型、性别和年龄与后牙根与窦腔接近程度的相关性。
观察性、横断面研究。研究地点和时间：武装部队牙科研究所正畸科，拉瓦尔品第联合军事医院，2021 年 1 月至 2022 年 7 月。
评估了 100 名年龄在 13 至 43 岁之间的患者的三维 CBCT 扫描，并根据垂直面型分为三组，即高角型、均角型和低角型。对每个扫描的上颌窦根部接近程度进行评分（0-3）。使用非参数 Wilcoxon 曼惠特尼 U 检验和 Kruskal Wallis 检验比较平均牙齿和患者评分与垂直面型、年龄和性别之间的关系。
100 名患者中，男性 54 名，女性 46 名，44%年龄在 13-23 岁之间，27%年龄在 24-33 岁之间，29%年龄在 34-43 岁之间。高角型患者的平均患者和牙齿评分最高（p<0.001）。性别与根与 MSF 接近程度之间无统计学显著关系（p>0.05）。年龄与根尖与上颌窦壁的连接呈负相关（p<0.001）。
与低角型和均角型相比，高角型患者的上颌后牙根更接近上颌窦，因此根吸收和延长正畸治疗的风险更大。此外，随着年龄的增长，根与上颌窦壁的距离更远。
上颌窦、锥形束 CT、面型。
