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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 and measure the cortical bone density in the palate of young and adult patients by cone beam computed tomography (CT), and to provide a reference for the clinical application of micro-implants. Methods Convenient selection of Urumqi Stomatological Hospital orthodontics from March 2016 to June 2016 in the treatment of adolescents (60 cases) and adult patients (60 cases) for CBCT scan. All patients’ palatal cortical bone density measurement, the results obtained for statistical analysis. Results Compared with adult group, the HU of young group (613 ± 27) was lower than that of adult group (733 ± 5) HU (P <0.01). The BMD of male was higher than that of female in the same group. BMD of both sides of palatal bone (733 ± 21) HU were lower than those in the middle region (632 ± 21), (607 ± 19) HU, 524 ± 17 (497 ± 11) HU, (632 ± 23) and (601 ± 30) HU were smaller in the adult group than those in the middle region (942 ± 33, 709 ± 23) HU, 598 ± 32 and 549 ± 21 HU (801 ± 16) and (689 ± 25) HU, respectively (P <0.01). Conclusions The CBCT combined with image analysis technique can be used to measure the cortical bone density of the alveolar bone palate with the advantages of noninvasiveness, feasibility and repeatability.