Gross A M, Kellum G D, Franz D, Michas K, Walker M, Foster M, Bishop F W
University of Mississippi, University 38677.
Angle Orthod. 1994;64(6):419-24. doi: 10.1043/0003-3219(1994)064<0419:ALEOOM>2.0.CO;2.
Open mouth posture and maxillary arch width were assessed annually for 4 years in a group of children. While younger children exhibited high levels of open mouth posture, this behavior decreased significantly over time. Racial and sex differences, as well as a race-by-time interaction were also evident. The children displayed a significant increase in maxillary arch width across time with sex and racial differences in this growth pattern. Subjects were classified as exhibiting primarily open mouth or closed mouth posture. Although both groups showed increased maxillary arch widths over time, the closed mouth subjects showed significantly greater maxillary arch growth.
对一组儿童进行了为期4年的年度张口姿势和上颌牙弓宽度评估。虽然年幼儿童表现出较高水平的张口姿势，但这种行为随时间显著减少。种族和性别差异以及种族与时间的交互作用也很明显。随着时间的推移，儿童的上颌牙弓宽度显著增加，且在这种生长模式上存在性别和种族差异。受试者被分类为主要表现为张口或闭口姿势。虽然两组的上颌牙弓宽度都随时间增加，但闭口组的上颌牙弓生长明显更大。
