Germec-Cakan Derya, Tozlu Murat, Ozdemir Fulya
Aust Orthod J. 2014 May;30(1):54-60.
To investigate and compare cortical bone thickness of the posterior alveolar process in adult patients presenting with skeletal Class I, II and III malocclusions.
Cone beam computed tomographic (CBCT) images of 196 adult subjects, aged 20-45, were evaluated. Cortical bone thickness was measured 4 mm from the alveolar crest, as the shortest bucco-lingual dimension of the cortical bone at interdental sites from the distal of the maxillary canine to the mesial of the maxillary second molar.
There were no differences between the malocclusion groups in mean age, gender, or vertical pattern (p > 0.05). At all sites measured, there were no statistically significant differences in the means of cortical bone thickness between the groups (p > 0.05). Maxillary palatal bone thickness was reduced in the Class I (p < 0.0001), and Class II (p < 0.001) groups; but mandibular buccal thickness increased significantly (p < 0.001) in all malocclusion groups from anterior to posterior.
There was no difference in cortical bone plate thickness between Class I, II and III subjects when related to mini-implant placement sites. As the measurement site moved towards the posterior, maxillary palatal cortical thickness decreased except in Class III cases, while mandibular buccal bone thickness increased in all malocclusion groups.
研究并比较骨骼I类、II类和III类错牙合畸形成年患者后牙槽突的皮质骨厚度。
对196名年龄在20 - 45岁的成年受试者的锥形束计算机断层扫描（CBCT）图像进行评估。在距牙槽嵴4毫米处测量皮质骨厚度，即从右上颌尖牙远中至右上颌第二磨牙近中的牙间部位皮质骨的最短颊舌径。
错牙合畸形组在平均年龄、性别或垂直型方面无差异（p > 0.05）。在所有测量部位，各组之间皮质骨厚度均值无统计学显著差异（p > 0.05）。I类（p < 0.0001）和II类（p < 0.001）组上颌腭骨厚度减小；但在所有错牙合畸形组中，下颌颊侧厚度从前向后均显著增加（p < 0.001）。
与微型种植体植入部位相关时，I类、II类和III类患者皮质骨板厚度无差异。随着测量部位向后移动，除III类病例外，上颌腭侧皮质厚度减小，而在所有错牙合畸形组中下颌颊侧骨厚度增加。
