White B C, Woodside D G, Cole P
Department of Orthodontics, Faculty of Dentistry, University of Toronto, Ontario, Canada.
J Otolaryngol. 1989 Jun;18(4):137-43.
The purpose of this investigation was to provide quantitative data describing the effects of rapid palatal expansion on nasal airway resistance. Rapid palatal expansion is an orthodontic procedure which is commonly used to widen the maxilla to correct maxillary narrowing resulting in the orthodontic abnormality of crossbite and to provide more space for alignment of crowded teeth. Recordings of nasal airway resistance were taken prior to expansion, immediately after expansion (approximately one month), after a retention period of approximately 4 months and approximately one year after initiation of treatment. Findings indicate an average reduction in nasal airway resistance of 48.7 per cent which was statistically significant at the 0.005 level. The reduction also appeared stable throughout the post treatment observation period (maximum one year) as each series of readings was statistically significantly lower than the initial reading, but not significantly different from each other. Reduction of nasal airway resistance was highly correlated to the initial nasal resistance level prior to rapid maxillary expansion. Those individuals with the greater initial resistance tended to have greater reductions in airway resistance following the expansion.
本研究的目的是提供定量数据，描述快速腭扩展对鼻气道阻力的影响。快速腭扩展是一种正畸程序，通常用于扩宽上颌骨，以纠正导致正畸性反咬合异常的上颌狭窄，并为排列拥挤的牙齿提供更多空间。在扩展前、扩展后立即（约1个月）、约4个月的保持期后以及治疗开始后约1年时记录鼻气道阻力。结果表明，鼻气道阻力平均降低了48.7%，在0.005水平上具有统计学意义。在整个治疗后观察期（最长1年）内，这种降低似乎是稳定的，因为每一系列读数在统计学上均显著低于初始读数，但彼此之间无显著差异。鼻气道阻力的降低与快速上颌扩展前的初始鼻阻力水平高度相关。那些初始阻力较大的个体在扩展后气道阻力的降低往往更大。
