The channelization of upper and lower anterior face heights compared to population standard in males between ages 6 to 20 years

摘要: The upper and lower face heights of 120 males with complete longitudinal records at the ages 6 to 20 years (obtained from Burlington Growth Centre, Toronto, Canada) were studied longitudinally. Population standards established on a percentile basis using data available for total sample. Percentile plottings made 6, 9, 12, 14, 16, 18 years. Individual growth curves compared population channelization height was assessed. In 22 cases high or increasing height, size airway through nasopharynx nose assessed profile postero-anterior cephalograms respectively. Correlation analyses carried out different facial variables. variances compared. Both did not channelize in many cases, majority and/or narrow. No correlation found between height. variance three times that are highly independent is variable greater dimension than length maxilla mandible. seems be more dependent muscle function, environmental factors interfering posture head.