Hartgerink D V, Vig P S, Abbott D W
Department of Orthodontics, School of Dentistry, University of Michigan, Ann Arbor.
Am J Orthod Dentofacial Orthop. 1987 Nov;92(5):381-9. doi: 10.1016/0889-5406(87)90258-7.
The purpose of this study was to evaluate changes in nasal resistance to airflow in persons undergoing rapid maxillary expansion and to reevaluate the responses at a 1-year follow-up. Nasal resistance measurements, assessed in four modes (natural state, anterior nares dilation with Tygon tubing, following administration of decongestant, and nares dilation with tubing and decongestant), were taken on a group of 38 patients receiving rapid maxillary expansion and compared with a control group not receiving expansion. Thirty-three of the patients were reevaluated 9 to 12 months after expansion was completed. Eighteen subjects in the control group were also reevaluated. Oral/nasal airflow rates (percent nasality) were recorded for the control group and for some of the expansion patients. Results indicated that some subjects receiving rapid maxillary expansion had a significantly higher nasal resistance than the control group. There was a significant median reduction in nasal resistance following rapid maxillary expansion, measured in the natural state only, and this appeared to be stable up to 1 year after maximum expansion was obtained. Rapid maxillary expansion appeared to effect an expansion at the anterior nares, which contributes to nasal resistance reduction. Individual variation in nasal resistance values was considerable and hence the median response for the group was not a reliable estimate of individual response. Due to the high individual response variability, rapid maxillary expansion is not a predictable means of decreasing nasal resistance.
本研究的目的是评估接受快速上颌扩弓治疗的患者鼻气流阻力的变化，并在1年随访时重新评估其反应。对一组38例接受快速上颌扩弓治疗的患者，采用四种模式（自然状态、用泰根管扩张前鼻孔、使用减充血剂后、用泰根管扩张前鼻孔并使用减充血剂）评估鼻阻力测量值，并与未接受扩弓治疗的对照组进行比较。在扩弓完成9至12个月后，对其中33例患者进行了重新评估。对照组中的18名受试者也进行了重新评估。记录了对照组和部分扩弓患者的口腔/鼻腔气流率（鼻音百分比）。结果表明，一些接受快速上颌扩弓治疗的受试者的鼻阻力明显高于对照组。仅在自然状态下测量，快速上颌扩弓后鼻阻力中位数显著降低，且在获得最大扩弓后长达1年似乎保持稳定。快速上颌扩弓似乎导致前鼻孔扩张，这有助于降低鼻阻力。鼻阻力值的个体差异相当大，因此该组的中位数反应并非个体反应的可靠估计。由于个体反应变异性高，快速上颌扩弓不是降低鼻阻力的可预测方法。
