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作 者:包丽娜[1,2] 任柏林 熊红珍[1,2] 包丽杰[1,2] 温兴涛
机构地区:[1]广东省口腔医院 [2]南方医科大学附属口腔医院番禺分院正畸科,广东广州510280 [3]广州市荔湾区口腔医院
出 处:《广东牙病防治》2015年第6期297-301,共5页Journal of Dental Prevention and Treatment
基 金:广东省医学科学技术研究基金(A2014606)
摘 要:目的探讨微种植钉支抗矫治上颌阻生尖牙的临床效果。方法术前拍摄锥形束CT(cone-beam CT,CBCT)明确诊断和定位患牙,以微种植钉为支抗对15例(16颗)上颌阻生尖牙进行外科-正畸联合治疗。测量矫治前后阻生尖牙、矫治后对侧健康尖牙长轴与正中矢状面的交角角度,牙尖顶端到平面的距离,对结果进行比较分析。结果 16颗阻生尖牙均牵引到位,牙周牙髓健康。治疗前阻生尖牙长轴与正中矢状面的交角平均为(32.06±5.07)°,治疗后为(-6.56±2.53)°;牙尖到平面的距离平均为(13.59±1.05)mm,治疗后为(-0.58±0.26)mm。矫治前后阻生尖牙数值对比,差异均有统计学意义(P<0.05)。矫治后阻生尖牙与对侧健康尖牙相比,差异均无统计学意义(P>0.05)。结论在CBCT的准确定位下,使用微种植钉作为支抗牵引上颌埋伏阻生尖牙可取得良好的临床治疗效果。Objective To investigate the clinical effect of micro-implant anchorage on the treatment of impacted max-illary canines.Methods Sixteen impacted maxillary canines from 15 patients were diagnosed and located by cone-beam CT ( CBCT) before treatment, and they were treated by micro-implant anchorage with surgical exposure and orthodontic alignment.The angle of canine axis to the median sagittal plane and the distance of canine cusp to the occlusal plane of the impacted canines were measured before and after treatment and the contralateral healthy canines after treatment, then the results were compared.Results Sixteen impacted maxillary canines were towed successfully to proper position with pulpal and periodontal health.The average angle of pre-treatment impacted canines axis to the median sagittal plane was (32.06 ±5.07)°;the average distance of cannine cusp to the occlusal plane was (13.59 ±1.05) mm;there were sig-nificant difference between pre-treatment and post-treatment impacted canines (P0.05).Conclusion By ac-curate positioning of CBCT, micro-implant anchorage can achieve excellent clinical effect on the treatment of impacted maxillary canines.
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