微种植体压低前牙改善露龈笑的临床研究  

The effects of microimplant-assisted anterior teeth intrusion in relieving gummy smile

作　　者：韩俊[1] 王璐[1] Han Jun;Wang Lu(Department of Stomatology,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology,Hubei Province Key Laboratory of Oral and Maxillo facial Development and Regeneration,Wuhan 430022,China.)

机构地区：[1]华中科技大学同济医学院附属协和医院口腔医学中心,口腔颌面发育与再生湖北省重点实验室,武汉430022

出　　处：《中华口腔正畸学杂志》2020年第1期9-14,共6页Chinese Journal of Orthodontics

摘　　要：目的探讨和评价微种植体在矫治微笑露龈病例中的临床疗效.方法随机选择15例于武汉协和医院口腔医学中心进行正畸治疗并伴有露龈笑的患者,在前牙区及后牙区的牙槽骨中植入微种植体,术后即刻加力,每侧前牙垂直向加力100 g,后牙水平向加力200 g.临床观察露龈笑改善后,取出前牙种植钉,继续利用后牙区种植钉关闭剩余间隙.结果15例患者牙龈暴露量减少(1.59±0.88)mm.头影测量分析显示上中切牙切端至上唇下缘的垂直高度平均减小(2.46±0.90)mm,中切牙临床牙冠长度减少(0.55±0.43)mm、侧切牙临床牙冠长度减少(0.37±0.27)mm、尖牙临床牙冠长度减少(0.50±0.51)mm,且治疗前后差异有统计学意义(P<0.05).曲面断层X线片显示治疗后牙根未见明显吸收.结论前牙区微种植体支抗可有效压低上前牙,改善露龈笑,值得推广使用.Objective To evaluate the clinical efficacy of micro-implants in the patients with gummy smile.Methods Fifteen patients with gummy smile were randomly selected from dentistry center of Wuhan Xiehe Hospital.Micro-implants were applied in the alveolar bone of the anterior and posterior regions.Orthodontic forces were applied immediately after implant insertion,with 100 g vertical in anterior region and 200 g transverse in posterior region.After clinical observation of relief of gummy smile,anterior implants were taken out,leaving the posterior implants to close the remaining space.Results The exposure of gingiva in 15 patients was decreased with(1.59±0.88)mm.The cephalometric analysis showed that the distance from central incisal edge to lower border of upper lip was reduced by(2.46±0.90)mm,and the clinical crown length of central incisors,lateral incisors and canines were reduced by(0.55±0.43)mm,(0.37±0.27)mm,and(0.50±0.51)mm,respectively,and the changes had statistical significant(P<0.05).The panoramic radiographs showed no obvious root absorption after treatment.Conclusions The micro-implant anchorage in the anterior teeth can effectively intrude upper anterior teeth and relieve gummy smile.

关 键 词：微种植体 种植体支抗 露龈笑 压低上前牙 

分 类 号：R783.5[医药卫生—口腔医学]