摘要
目的:研究正畸病人后牙段腭弓形态的规律,为临床预成腭杠的制作提供理论基础。方法:选择60例正畸病人,按牙齿萌出情况(牙龄)分为3组,灌取上颌模型,测量第一磨牙区腭弓的高度、宽度和弧长,统计分析。结果:恒牙列组后牙段腭弓高度、宽度及弧长测量值最大,替牙组最小,有统计学意义。结论:牙列由替牙列向恒牙列的发育过程中,腭弓也在发育,其趋势是高度,宽度和弧长的不断增加,尤其以替牙列向恒牙期过度时,此变化最为明显(P<0.01)。临床使用腭杠时需注意腭部的这种特点。
AIM： To measure the palatal vault in buccal area, which may be hdpful to make preadjustment of palatal bar. METHODS： The study group comprised 60 patients who underwent orthodontic treatment. Study model of each patient was made, The palatal vault in buccal area were measured, The data was stored in a personal computer and submitted to statistical analysis, applying student t test. RESULTS： The average width and high, length of palatal vault in mixed dentition group were much more than in permanent dentitional group, There was a significant difference between those, CONCLUSION：With dentitional development the palatal vault becomes wider. At least two types of preadjusted palatal bar are needed.
出处
《牙体牙髓牙周病学杂志》
CAS
2008年第2期104-106,共3页
Chinese Journal of Conservative Dentistry
关键词
腭弓形态
测量
腭杠
palatal vault
measurement
palatal bar
