Twin-block治疗下颌后缩患者软组织变化的研究 |
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引用本文: | 卢红飞,麦志辉,艾虹,陈奇.Twin-block治疗下颌后缩患者软组织变化的研究[J].实用全科医学,2009,7(6):559-560. |
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作者姓名: | 卢红飞 麦志辉 艾虹 陈奇 |
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作者单位: | 510630广东省中山大学附属第三医院口腔科 |
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摘 要: | 目的观察应用Twin-block功能矫治器治疗安氏Ⅱ类1分类错下颌后缩患者所引起的软组织的变化。方法对20例处于生长发育期且以下颌后缩为主的安氏Ⅱ类1分类错患者进行Twin-block功能矫治,分别对矫治前、后的头颅侧位片进行HoldawayX线头影测量分析,对其结果进行配对t检验。结果治疗后软组织面角增大明显(P〈0.01);鼻下点至H线距增加(P〈0.05);上唇厚度、H角、下唇凸点至H线距以及下唇凹点至H线距(Si-H)均减少(P〈0.05)。结论使用Twin-block矫治器可以令安氏Ⅱ类1分类下颌后缩患者下颌前移的同时减少上、下唇软组织的突度及厚度,改善前突面型。
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关 键 词: | Twin-block 下颌后缩 X线头影测量 软组织 |
Clinical Study on Soft Tissue Changes Caused by Twin-Block Appliance in Patients with Mandibular Retrognathia |
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Institution: | LU Hong-fei ,MAI Zhi-hui ,AI Hong, et al.( Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong , China) |
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Abstract: | Objective To investigate the soft tissue changes caused by Twin-Block appliance which were used to treated Angle' s class Ⅱ division 1 malocclusion with mandibular retrognathia. Methods 20 patients in growth stage with Angle' s Class Ⅱ division 1 malocclusion and mandibular retrognathia were investigated. Cephalometric analysis was carried out before and after the treatment of Twin-Block appliance. Data were analyzed by SPSS11.0 system using paired t-test. Results There were significant increases in FH-H' Pg' angle ( P 〈 0.01 ) and Sn-H ( P 〈 0.05 ) , while 1-LZ and H-H' Pg' angle and Li-H and Si-H decreased( P 〈 0.05 ). Conclusion Twin-Block appliance can reset the mandible forward on Angle' s ClassⅡ division 1 malocclusion patients with mandibular retrognathia, while the thickness of patient' s lips decreased and it contributed to a better profile. |
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Keywords: | Twin-block |
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