安氏二类一分类错青年患者正畸过程中咀嚼效率的变化  

Changes in masticatory efficiency in patients with Class Ⅱ,Division 1 malocclusion during orthodontic treatment and after retention

作　　者：龙飞[1] 栗震亚[2] 任卫萍[2] 韩保迪[1] 

机构地区：[1]甘肃省兰州大学口腔医学院,730000 [2]甘肃省人民医院口腔治疗中心

出　　处：《现代口腔医学杂志》2009年第2期118-119,共2页Journal of Modern Stomatology

摘　　要：目的比较男女安氏二类一分类错青年患者在正畸治疗末期及保持期咀嚼效率的变化;比较保持结束时正畸患者与同年龄段个别正常者咀嚼效率的差异。方法称重法测量30例采用MBT矫治系统拔牙矫治的安氏二类一分类错青年患者在正畸矫治精细调整前(T1)、精细调整后(T2)、保持半年(T3)、保持一年(T4)时的咀嚼效率,并测量同年龄组24例未经正畸治疗的个别正常者咀嚼效率作为对照。用SPSS 13.0统计软件,采用方差分析和多样本均数两两比较法对患者在四个时间段的咀嚼效率进行比较,同时将患者T4期的咀嚼效率与对照组比较。结果男女患者的咀嚼效率在四个时期均不断上升,其中T2与T1、T3与T2间差异有显著性。T4与T3、T4与对照组相比无显著性差异。男女组均有相似的表现。结论固定矫治末期到保持前半年,患者的咀嚼效率明显提升。常规减数拔牙患者矫治后的咀嚼效率接近个别正常者。Objective To investigate the changes in masticator）, efficiency during orthodontic treatment and after retention. Methods Masticatory efficiency （Gravimetric method） was evaluated in 30 patients with Class Ⅱ, Division 1 malocclusion before and after finishing stage, half a year and one year after retention （T1 - T4）. Twenty -four subjects with individual normal occlusion who had not received orthodontic treatment served as control group. The data was analyzed using SPSS 13.0 software package. Results The masticatory efficiency increased continuously in stages T1 - T4. Differences between T2 and T1, and between T3 and T2 were significant （ P 〈 0.05 ）. No significant difference was found between patients at the end of retention phase and those in the control group （ P 〉 0.05 ）. Conclusion The mastieatory eitieieney increased quicldy between the finishing stage and the first half - year of retention. After one year retention, the mastieatory efficiency of the patients is similar to the subjects with individual normal occlusion.

关 键 词：错[牙合]畸形 称重法 咀嚼效率 

分 类 号：R783.5[医药卫生—口腔医学]