[Roentgencephalometric evaluation of inclination and the position of incisors in orthodontic malocclusions and normal occlusion].
The aims of the study were: --to determine sagittal differences in the position and inclination of incisors in defined orthodontic anomalies as compared to eugnathic occlusion; --to assess the importance of variable interrelationships for the evaluation of incisor orientation; and --to describe the distribution of compatibility of all linear and angular assessments of incisor orientation studied in relation to both jaws, direction of deviation and type of malocclusion. A sample of 436 roentgenograms taken in subjects of both sexes aged 10-18 years (180 with eugnathic occlusion and 256 with orthodontic anomalies) were analyzed. Five dentoalveolar variables were observed. Use of the 3 degrees = 1 mm principle allowed the inclination and position of incisors to be compared. The following conclusions were reached: --as compared to eugnathic subjects, dentoalveolar variables were changed in defined orthodontic malocclusions with clear differentiation according to type of anomaly; --a significant relationship was found for most variables used to assess the position and inclination of incisors; --a complete compatibility between the position and inclination was recorded in 16.7% and 15.7% of cases in the maxilla and mandible, respectively; --compatibility between the inclination and position was highest in subjects with eugnathic occlusion; and --inclination and position of incisors may be mutually independent or even contradirectional in one and the same subject, necessitating separate analytical evaluation.
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D000293:Adolescent; D002508:Cephalometry; D002648:Child; D003766:Dental Occlusion; D005260:Female; D006801:Humans; D007180:Incisor; D008297:Male; D008310:Malocclusion / Q000175:diagnosis*
Rendgenkefalometrijska procjena odnosa inklinacije i pozicije sjekutića kod ortodontskih nepravilnosti i eugnate okluzije.