Alveolar bone mapping in subjects with different vertical facial dimensions
Alveolar bone mapping in subjects with different vertical facial dimensions
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DOI：
10.1093/ejo/cju034
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发表时间：
2015-04-01
影响因子：
2.6
通讯作者：
Hassan, Islam T.
中科院分区：
文献类型：
--
作者：
Sadek, Mais M.;Sabet, Noha E.;Hassan, Islam T.
目的：本研究的目的是调查不同垂直面尺寸的受试者之间的牙槽骨和骨骼尺寸的差异，使用锥形束计算机断层扫描（CBCT）。到目前为止，这是第一个研究，探讨了在上颌骨和下颌骨后牙槽骨厚度之间的关系，使用CBCT data.Materials和方法：从152 CBCT扫描的样本，45扫描被选入本研究。CBCT合成的侧位头颅定位片被用于根据受试者的垂直骨骼模式将其分为三组。使用iCATVision（TM）软件，在整个牙齿支承区域中进行牙槽高度和厚度的测量。此外，使用AutoCAD（TM）软件对唇-舌切牙移动的解剖限制进行测量。结果：与其他两组相比，高角组上颌、下颌前牙槽骨高度均大于其他两组，而后牙槽骨高度差异无统计学意义（P> 0.05）。此外，高角组在上颌骨前部和下颌骨几乎所有部位的牙槽骨都较薄。低角度组有较高的平均值为所有上下切牙的唇-舌切牙运动的解剖限制的一些测量结果：局限性：CBCT扫描的固有局限性，相关的物理空间分辨率的图像和研究样本大小的限制应被考虑。结论：有一个统计学上的显着关系，面部类型和牙槽高度和厚度。高角度受试者在明显的前后切牙移动时，切牙移动超出牙槽骨支撑的风险增加。
Objective: The purpose of this study was to investigate differences in alveolar and skeletal dimensions among subjects with different vertical facial dimensions using cone beam computed tomography (CBCT). To date, this is the first study that investigates the relationship between facial type and posterior alveolar thickness in both maxilla and mandible, using CBCT data.Materials and methods: From a sample of 152 CBCT scans, 45 scans were selected to be included in the study. CBCT-synthesized lateral cephalograms were used to categorize subjects into three groups based on their vertical skeletal pattern. Using iCATVision (TM) software, measurements of alveolar height and thickness were carried out in the entire tooth-bearing region. In addition, AutoCAD (TM) software was used to carry out measurements for the anatomical limitation to labio-lingual incisor movement. Kruskal-Wallis and Mann-Whitney U-tests with the Bonferroni adjustment were done for statistical analyses.Results: Compared to the other two groups, high-angle group had larger anterior dentoalveolar height with no significant differences in alveolar height posteriorly, in both the maxilla and mandible. Furthermore, high-angle group presented thinner alveolus anteriorly in the maxilla and at almost all sites in the mandible. Low-angle group had higher mean values for some measurements of the anatomical limitation to labio-lingual incisor movement for all upper and lower incisors.Limitations: Inherent limitations of CBCT scanning as related to physical spatial resolution of the image and limitations posed by the study sample size should be considered.Conclusions: There is a statistically significant relationship between facial type and alveolar height and thickness. High-angle subjects can be at increased risk of moving incisors beyond alveolar bone support when subjected to marked antero-posterior incisor movement.