Original scientific paper
Roentgencephalometric evaluation of inclination and the position of incisoris in orthodontic malocclusions and normal occlusion
Dušan Rak
; Dom zdravlja »Dr Petar Vitezica« Split, Hrvatska
Želimir Muretić
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Abstract
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 linaear and angular assessments of incisor orientation studied in relation io both iaws, 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° = 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 16.7l>/0. 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.
Keywords
roentgencephalometry; inclination of incisors; position of insors
Hrčak ID:
100949
URI
Publication date:
15.6.1990.
Visits: 1.018 *