Department of Orthodontic, School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, Kermanshah, 67139546581, Iran.
School of Dentistry, Kermanshah University of Medical Sciences, Shariati Street, Kermanshah, 67139546581, Iran.
BMC Oral Health. 2021 Oct 17;21(1):534. doi: 10.1186/s12903-021-01891-8.
This study aimed to assess the interradicular distance and alveolar bone thickness of Persian adults with different sagittal skeletal patterns for miniscrew insertion using cone-beam computed tomography (CBCT).
This cross-sectional study was conducted on maxillary and mandibular CBCT scans of 60 patients (18-35 years) in three groups (n = 20) of class I, II and III sagittal skeletal pattern. Anatomical and skeletal parameters were measured at 2, 4 and 6 mm apical to the cementoenamel junction (CEJ) by one examiner. The intra- and inter-class correlation coefficients were calculated to assess the intra, and interobserver reliability. Data were analyzed by ANOVA and Tukey's test (alpha = 0.05).
The intra- and interobserver reliability were > 0.9 for all parameters. The largest inter-radicular distance in the maxilla was between the central incisors (1-1) in classes I and III, and between premolars (4-5) in class II patients. The largest inter-radicular distance in the mandible was between molar teeth (6-7) in all three classes. The buccal cortical plate thickness was maximum at the site of mandibular first and second molars (6-7). The posterior maxilla and mandible showed the maximum thickness of cancellous bone and alveolar process. Wide variations were noted in this respect between class I, II and III patients.
The area with maximum inter-radicular distance and optimal alveolar bone thickness for miniscrew insertion varies in different individuals, depending on their sagittal skeletal pattern.
本研究旨在通过锥形束计算机断层扫描（CBCT）评估具有不同矢状骨骼模式的波斯成年人的根间距离和牙槽骨厚度，以便进行微螺钉植入。
这项横断面研究对三组（每组 20 名）I 类、II 类和 III 类矢状骨骼模式的 60 名（18-35 岁）患者的上颌和下颌 CBCT 扫描进行了研究。一名检查者在釉牙骨质界（CEJ）上方 2、4 和 6 毫米处测量解剖学和骨骼参数。计算了组内和组间相关系数，以评估观察者内和观察者间的可靠性。采用方差分析和 Tukey 检验（α=0.05）进行数据分析。
所有参数的观察者内和观察者间可靠性均>0.9。上颌最大的根间距离位于 I 类和 III 类的中切牙（1-1）之间，以及 II 类患者的前磨牙（4-5）之间。下颌最大的根间距离位于所有三类的磨牙（6-7）之间。下颌第一和第二磨牙（6-7）部位颊侧皮质板厚度最大。上颌后区和下颌后区表现出最大的松质骨和牙槽骨厚度。I 类、II 类和 III 类患者在这方面存在广泛的差异。
在不同个体中，根据其矢状骨骼模式，最大的根间距离和最佳的牙槽骨厚度区域用于微螺钉植入存在差异。
