| Description |
AIM: The aim of this study was to analyze the incidence and the diagnostic possibilities of local factors in the etiology of ectopic eruption of upper permanent canine. For analysis were used images acquired from CT examination. MATERIAL AND METHODS: Examinated material was formed by CT images (CT scans, MPR and 3D reconstructions) of 190 patients (114 females and 76 males), aged between 10 and 50 years (average age 17,5 years), with ectopic eruption of upper permanent canine. In general were analyzed 240 (140 unilateral and 100 bilateral) ectopic canines. RESULTS: The following incidence of local etiological factors was recorded : lack of space (20,8%) (Fig. 1) and total loss of space for canine eruption (10,8%) (Fig. 2), excess of space (15,8%) (Fig. 3), peg-shaped lateral incisor (7,5%) (Fig. 4), aplasia of lateral incisor (5,4%), transposition of canine and lateral incisor (4,2%) (Fig. 5), transposition of canine and first premolar (6,7%) (Fig. 6), supernumerary tooth (3%) (Fig. 7), anomalous position of first premolar (27,9%) (Fig. 8) and root malformation of first premolar (3,7%) (Fig. 9), dental follicle enlargement (0,83%) (Fig. 10), ectopic position of the tooth germ (1,7%) (Fig. 11). In 3,3 % cases were registered simultaneous ectopic eruption of more permanent teeth. None of above mentioned factors was occured in 10 % cases. CONCLUSIONS: The knowledge of etiology and diagnostic possibilities of local causative factors is essential condition for early treatment of ectopic eruption of upper permanent canine. Supported by the project SVC No. 1M0528.
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