TURKISH JOURNAL OF ORTHODONTICS, vol.22, no.3, pp.218-227, 2009 (ESCI)
To compare the maxillary and mandibular skeletal structures and airway dimensions between anterior functional shifting and Class I control patients. This study was composed of 48 patients. The first group was consisted of 24 patients (male: 11, female: 13). Mean AN value was 0.31 +/- 3.49 and mean age is 13.52 +/- 2.95. The second group was a skeletal Class I group, and consisted of 24 patients (male: 7, female: 77) and served as the control group. Mean AN8 was 2.47 +/- 2.27 and mean age was 13.99 +/- 1.79. Eighteen cephalometric measurements were used to evaluate skeletal differences, and 14 measurements were used for airway dimensions. Two groups were compared with independent t test. Position and size of the mandible were not affected with anterior functional shifting. 5 Go distance was smaller in anterior functional shifting patients (p<0.05). Hard palate - soft palate angle was statistically lower (p< 0.01) and soft palate length (pnsspt) was higher (p<0.07) in anterior functional shifting group. Inferior airway measurement (sbn-phwl) represented higher values in functional anterior shifting group (p< 0.05). There were statistically significant differences in Pns-ppw7 (p.c 0.05), spl/sps (p< 0.01) and spl/lps (p.c 0.01) measurements. Patients with anterior functional shifting showed wider airway than Class I control group. Postnatal maxillary development deficiency may be observed in functional anterior shifting cases.