摘要
目的：研究锥形束CT（CBCT）测量青少年患者腭部不同区域骨厚度的差异，分析在腭部相同区域中Ⅰ、Ⅱ、Ⅲ类矢状骨面型青少年患者骨厚度的差异，为临床腭种植支抗的植入提供参考。方法选取90例垂直骨面型为均角的12～16岁青少年患者，依照矢状骨面型分为Ⅰ、Ⅱ、Ⅲ类三组，每组男女各15例，进行CBCT扫描。以切牙孔后缘与后鼻棘点连线作为水平基准平面，在切牙孔后4.0、8.0、12.0、16.0、20.0、24.0 mm冠状向截面上，距腭中线0.0、2.0、4.0、6.0 mm矢状向截面上，测量两基准线的24个交点的垂直骨厚度。结果（1）腭部骨厚度在腭中缝处由前往后逐渐增加，在腭侧区及腭旁区由前往后逐渐减少（P＜0.05）；（2）腭部骨厚度在前份区域从腭中缝往两侧逐渐增加，在中份及后份区域由腭中缝往两侧逐渐减少（P＜0.05）；（3）在腭部的相同区域中，不同矢状骨面型青少年患者腭部骨厚度差异有统计学意义（P＜0.05）。在腭中缝前份、腭中缝中份、腭中缝后份、腭侧区前份、腭旁区前份区域中，Ⅰ、Ⅱ类青少年患者腭部骨厚度大于Ⅲ类青少年患者；腭侧区中份、腭侧区后份、腭旁区中份、腭旁区后份区域中，仅Ⅱ类青少年患者腭部骨厚度大于Ⅲ类青少年患者。结论（1）腭部微种植支抗的最佳植入部位为腭旁区前份；（2）在相同腭部植入区域中，Ⅲ类青少年患者骨厚度小，穿通鼻底风险更大，建议Ⅲ类青少年患者选择更短的腭种植支抗。
Objective To anlysis the bone thickness of the palate in adolescents by Cone-beam computed tomography, and to explore the difference of the various regions of palate and the same regions of palate in adolescence with different sagittal skeletal patterns . Methods Ninety adolescents, 12 to 16 years old, with average mandibular angle were selected and scanned with Cone-beam computed tomography. They were divided into three groups of ClassⅠ, ClassⅡ, and Class Ⅲ according to their sagittal skeletal patterns. Each group consisted of 15 boys and 15 girls. The line of the posterior rim of the incisive foramen and the posterior nasal spine was made as the horizontal plane , the palatal bone thickness was measured at 0.0 mm, 2.0 mm, 4.0 mm and 6.0 mm lateral to the midpalatal suture on the sagittal plane and at 4.0 mm, 8.0 mm, 16.0 mm, 20.0 mm, 24 mm posterior to the level of the posterior margin of the incisive foramen on the coronal plane . Results （1）The palatal bone thickness increased from anterior to posterior in midpalatal suture , and decreased from anterior to posterior in mesial and lateral to midpalatal suture （P〈0.05）. （2）The palatal bone thickness increased from midpalatal suture to lateral region in anterior ,and decreased from midpalatal suture to lateral area in middle and posterior region （P〈0.05）. （3）Significant differences were observed in different sagittal skeletal patterns＆amp;nbsp;at the same region of palate （P〈0.05）. At the areas of Anterior Midline, Middle Midline, Posterior Midline, Anterior Medial, Anterior Lateral, there was significantly lower bone thickness in Class Ⅲthan in ClassⅠand Class Ⅱand at the areas of Middle Medial, Posterior Medial, Middle Lateral, Posterior Lateral, Class Ⅲ lower than ClassⅡ only. Conclusions （1）The best site for palatal implant anchorage is the anterior region in lateral to midpalatal suture; （2）The thinnest bone thickness was in Class Ⅲ at the same region of palate, where was more reluctant to the damage
出处
《中华口腔医学研究杂志（电子版）》
CAS
2014年第2期36-40,共5页
Chinese Journal of Stomatological Research(Electronic Edition)
基金
广东省医学科学技术研究基金(A2012207)
关键词
锥形束CT
矢状骨面型
腭部
骨质厚度
Cone-beam computed tomography
Sagittal skeletal patterns
Palate
Bonethickness
