摘要
目的:利用锥形束CT(cone beam computed tomography,CBCT)研究上颌侧切牙和尖牙区骨开裂和骨开窗的危险因素。方法:实验对象选自2014~2016年就诊于中国医科大学附属口腔医院正畸一科患者治疗前的CBCT,存在骨开裂或骨开窗的上颌侧切牙44例和上颌尖牙43例为实验组,不存在骨开裂和骨开窗的上颌侧切牙43例和上颌尖牙41例为对照组。结果:牙体倾斜度、牙体长轴与牙槽突长轴的角度、牙槽骨曲度、牙槽骨宽度、牙根宽度与牙槽骨宽度差、牙齿在牙槽骨中的位置有统计学差异(P<0.05),牙根长度、根尖距牙槽骨最凹点的距离无统计学差异(P>0.05)。结论:牙齿舌倾、牙体长轴与牙槽突长轴角度大、牙槽骨薄、牙槽骨弯曲大、牙齿位置偏离牙槽骨中心(偏唇侧或舌侧)等是上颌侧切牙和尖牙区发生骨开裂与骨开窗的危险因素。
Objective:To investigate the risk factors with dehiscences and fenestrations of upper lateral incisors and canines using CBCT.Methods:CBCT images of untreated patients in China Medical University Hospital of Stomatology from 2014 to 2016 were selected.Forty-four upper lateral incisors and 43 upper canines with dehiscences or fenestrations were selected as test group,and 43 upper lateral incisors and 41 upper canines without alveolar defects were selected as control group.Results:There were significant differences on the tooth axis,the angle between tooth axis and alveolar bone axis,curvature angle of alveolar bone,alveolar bone width,differences between the root diameter and alveolar bone width,tooth position in the alveolar bone(P<0.05).There was no difference on the length of root and the distance from the root apical to the deepest point on the buccal bone(P>0.05).Conclusion:Tooth lingual inclination,larger angle between tooth axis and alveolar bone axis,thin alveolar,more curved alveolar buccal bone,and tooth position deviated from the alveolar bone(lateral or lingual)are risk factors of dehiscences and fenestrations in maxillary lateral incisors and canines.
作者
胡丽华
沈丹阳
左思慧
康启超
查畅
阎秀林
HU Li-hua;SHEN Dan-yang;ZUO Si-hui;KANG Qi-chao;CHA Chang;YAN Xiu-lin(Department of Orthodontics,School of Stomatology,China Medical University,Shenyang 110002,China)
出处
《口腔医学研究》
CAS
北大核心
2018年第10期1108-1111,共4页
Journal of Oral Science Research
基金
辽宁省教育厅科学技术研究项目(编号:LK201607)。
