Tip-Edge Plus矫治技术矫治恒牙期安氏Ⅱ类1分类错（牙合）的软硬组织改变  

Soft and hard tissue changes in Class Ⅱ division 1 patients treated with Tip-Edge Plus appliance

作　　者：徐璐璐[1] 徐娟[1] 贝丹丹[1] 鄂玲玲 刘洪臣 陈莉莉[3] 

机构地区：[1]解放军总医院口腔正畸科,北京100853 [2]口腔医学研究所 [3]华中科技大学同济医学院附属协和医院口腔医学中心

出　　处：《中华口腔医学杂志》2012年第4期214-220,共7页Chinese Journal of Stomatology

基　　金：国家自然科学基金（81100776）

摘　　要：目的探讨Tip—EdgePlus矫治技术矫治恒牙早期安氏Ⅱ类1分类错（牙合）面部软硬组织的改变，以期为临床提供参考。方法选择以下颌后缩为主的恒牙早期安氏Ⅱ类1分类错（牙合）16例．其中男性7例，女性9例，年龄12～15岁，平均13．5岁，均采用Tip-EdgePlus矫治技术进行非减数矫治。矫治前后拍摄头颅侧位x线片，对矫治前后软硬组织头影测量结果进行配对t检验。结果16例患者平均疗程16个月。矫治后U1-NA角和U1-NA距分别减少（15．40±5．31）。和（4．16±1．82）mm（P〈0．01），U1-L1角增加（-14．60±6．62）。（P〈0．01），u1-sN角减少（13．30±2．53）。（P〈0．05），ANB角及Y轴角均显著减少（P〈0．05），SNA角矫治前后差异无统计学意义（P〉0．05）。矫治后患者软组织侧貌改善明显，鼻唇角增加（-16．60±5．29）。（P〈0．01），面型角减少（5．00±1．37）。（P〈0．05），上唇突度减少，下唇突度增加，上下唇和颏部软组织产生移位和改形，上下唇突度达到正常范围，由治疗前的Ⅱ类骨面型变为治疗后I类直面型。结论对下颌后缩的安氏Ⅱ类1分类错猞患者采用Tip—EdgePlus矫治技术，可快速、高效改善面部侧貌，使软硬组织侧貌面型趋于正常。Objective To investigate the soft and hard tissue changes in Class Ⅱ division 1 patients treated with Tip-Edge plus technique. Methods Sixteen Class Ⅱ division 1 patients （7 boys and 9 girls ） with mandibular retrusion in permanent dentition were selected and treated with Tip-Edge plus appliance. Lateral cephalometric films were analyzed before and after treatment. The effects were evaluated with Holdaway soft tissues analysis and routine cephalometric analysis methods. The arithmetic mean and standard deviation were calculated for each variable. Paired t-test was performed. Results The average treatment time was 16 months. Normal overjet and overbite were established with retroclination of upper incisors and proclination of lower incisors. U1-NA（°） and U1-NA （ram） decreaed by （15.40 ± 5.31 ） ° and （4. 16±1.82） mm （P〈0.01）. NLA showed an average increase of （-16.60±5.29） （P〈0.01）. Remarkable soft tissue change was noted after the treatment. Conclusions The profile in Class Ⅱ division 1 patients eould be quickly and efficiently improved after treatment with Tip-Edge plus technique.

关 键 词：错猞 安氏Ⅱ类 正畸矫正器 Tip—Edge Plus技术 

分 类 号：R783.5[医药卫生—口腔医学]