【摘要】 目的观察T4K矫治器对于安氏Ⅱ类1分类患者的早期治疗效果。方法选择20例安氏Ⅱ类1分类错患者,年龄为8~10岁(10男、10女)。戴用澳大利亚MyofunctionalResearch公司的T4K矫治器。对照组20人,年龄为9~11岁,同样是安氏Ⅱ类1分类错患者,但未经矫治。矫治前后均通过X线头影测量并记录。经过(12.1±1.8)月的治疗后与对照组进行比较。测量后的均值及标准差采用配对样本和独立样本t检验分析。结果治疗组显示显著的变化,包括面形的改善和下颌矢状向的发育,SNB角及面部高度的增加,ANB角减小,下前牙长轴有明显改善,及前牙覆盖减小。对照组仅表现为面高增加。结论T4K矫治器在安氏Ⅱ类1分类错的早期治疗中作用十分明显,有推广应用价值。更多还原

【Abstract】 Objective:To clarify the treatment effects of T4K on Class II division 1 malocclusion.Methods:Twenty patients (10 girls and 10 boys) aged 8~10 years old with Class II division 1 malocclusion were treated with T4K appliance(Myofunctional Research Co., Queensland, Australia).A control group of 20 patients aged 9~11 years old with untreated Class II division 1 malocclusions was used to eliminate the possible growth effects. Lateral cephalograms were taken before and after treatment. Final cephalograms were taken (12.1±1.8) months after T4K application.The subjects in control group were observed for (11.2±2.1) months.The mean and standard deviations for cephalometric measurements were analyzed by paired-samples and independent-sample t-tests. Results:In the treated subjects significant changes including anterior rotation and sagittal growth of the mandible, increased SNB and facial height, reduced ANB, increased lower incisor proclination, upper incisor overjet reduction were observed.Conclusion:T4K appliance is effective in the treatment of class II division 1 malocclusion.更多还原