Nasal impairment in prepubertal children

The aim of this study was to examine changes in nasal resistance longitudin ally from age 9 to 13. The study population consisted of 82 children whose nasal resistance was measured annually. The results showed that as nasal re sistance significantly decreased with age, it also increased transiently at some point between ages 9 and 13, The timing of the transient change in re sistance varied among individuals, but it usually occurred before age 12. N o gender differences were observed,The results suggest that clinical signs of nasal impairment may periodically occur and then disappear in prepuberta l orthodontic patients.