青少年与成人正畸患者腭部植入部位骨皮质密度的CBCT研究

CBCT Research on Bone Cortical Density in Palatal Implantation Site of Teenagers and Adult Orthodontics Patients

目的应用锥形束CT评价并测量青少年与成年患者腭部骨皮质密度,为临床微种植体的应用提供参考。方法方便选择乌鲁木齐市口腔医院正畸科2016年3—6月在此期间进行治疗的青少年(60例)和成人患者(60例)进行CBCT扫描。将所有患者的腭部进行骨皮质密度测量,将得出的结果进行统计学分析。结果青少年组(613±27)HU小于成年人组的骨皮质密度(733±5)HU,(P<0.01);同组患者男性骨密度大于女性骨密度;所有患者腭骨两侧面的骨密度(733±21)HU都要比中间区域骨密度小,即青年组前侧(632±21)、(607±19)HU,后侧(524±17)、(497±11)HU比中间区域的(632±23)、(601±30)HU小;成年组前侧(942±33)、(709±23)HU,后侧(598±32)、(549±21)HU比中间区域的(801±16)、(689±25)HU小(P<0.01)。结论利用CBCT结合图像分析技术对牙槽骨腭部骨皮质密度进行测量,具有无创性、可行性及可重复性的优点。

Objective To evaluate the bone cortical density in palatal implantation site of teenagers and adult orthodontics patients and provide reference for the application of clinical micro-implants. Methods 60 cases of teenagers and 60 cases of adult patients treated in our hospital from which conveniently selected March to June 2016 adopted the CBCT scanning, and the pars palatalis of all patients were given the bone cortical density measurement, and the results were statistically analyzed. Results The bone cortical density in the teenager group was less than that in the adult group [（613±27）HU vs （733±5）HU]（ P〈0.01）,and the bone cortical density in males was bigger than the female bone cortical density, and the lat-eral bone density was smaller than that in the middle region, and the anterior and posterior bone densities in the teenagers group were smaller than those in the middle regions in the teenagers group[（632±21）,（607±19）HU,（524±17）,（497±11）HU vs （632±23）,（601±30）HU], and the anterior and posterior bone densities in the teenagers group were smaller than those in the middle regions in the adult group [（942±33）,（709±23）HU, （598±32）,（549±21）HU vs （801±16）,（689±25）HU]（ P〈 0.01）. Conclusion The measurement of CBCT and imaging analysis technology in bone cortical density alveolar bone pars palatalis has the advantages of no wound, feasibility and repeatability.