The incidence of canine transmigration and tooth impaction in a Turkish subpopulation

Abstract

The purpose of this study was to determine the incidence of transmigrated maxillary and mandibular canine teeth and also of the other impacted teeth in a Turkish subpopulation. Five thousand consecutive panoramic radiographs taken of patients who attended the Department of Oral Diagnosis and Radiology, Selcuk University, for routine examination between 2005 and 2007 were examined to identify incidences of transmigrated and impacted teeth. Demographic information of all patients was also recorded. Transmigrations were categorized according to the classification of Mupparapu. The effect of age, gender, and sidedness (left or right side) on the recorded abnormality was evaluated using a t-test. The incidence of transmigrated upper and lower canine teeth was found to be 0.34 per cent [17 patients, 12 females/5 males, with a mean age of 34 years (range 16-76 years)] and 0.14 per cent [7 patients, 4 females/3 males, with a mean age of 37.1 years (range 17-62 years)]. The incidence of tooth impaction was 2.94 per cent [147 patients, 101 females/46 males, with a mean age of 29.7 years (range 15-80 years)]. The most frequently impacted tooth was the upper canine followed by the lower canine, lower second premolar, and upper second premolar. No incidence of maxillary first molar impaction was found. Gender and sidedness did not show a statistical significance on the recorded abnormality (P = 0.22 and P = 0.48, respectively). However, in the 15-29 year age group, this was statistically different (P < 0.05). The incidence of transmigration of impacted mandibular canine teeth was greater than other teeth. With the increased use of panoramic radiographs, it is inevitable that diagnosis of such anomalies will increase.

Analysis of different type of transmigrant mandibular teeth

“…In this study, there was a slight overall female predominance, with a male to female ratio of 1:1.41. Although this finding corroborates with most reports, (2,7,12) the sex distribution reported by some authors (17) showed a higher frequency among males. The classification based on the migration pattern and final position of mandibulary canine transmigrants was asserted by Mupparapu (10): Type 1 for a canine impacted mesio-angularly across the midline, labial or lingual to the anterior teeth; Type 2 for a canine horizontally impacted near the inferior border of the mandible inferior to the apices of the incisors; Type 3 for a canine erupting on the opposite side of the jaw; Type 4 for a canine horizontally impacted near the inferior border of the contralateral side and Type 5 regardless of eruption status, canine positioned vertically in the midline with the long axis of the tooth crossing the midline.…”

“…They can appear at any age and ranged from 8 to 62 years (4). Many authors (5)(6)(7) are concerned with the classification and the incidence of impacted teeth, specifically premolars, and the decreasing ratio of canine and lateral teeth. Although failure of eruption of the mandibulary canine and lateral is an unusual event, impaction of the mandibular second premolar is most often seen, accounting for 23% of all impactions excluding third molars, with an overall frequency of impaction of 0.1% (5).…”

Transmigration of impacted canines: prevalence, management and implications on tooth structure and pulp vitality of adjacent teeth

“…Although this definition finds support [9], it has been also suggested that it is not the distance of migration that is important, but rather the tendency of canines to cross the midline [10]. Some authors have defined the statistical frequency of canine transmigration [2,8,11,12], which ranges from 0.1% [8] to 0.34% [12]. Mupparapu [13] reviewed the literature and classified the transmigrant mandibular canines as ( Fig.…”

Incidence of Mandibular and Maxillary Impacted Canines Transmigration:a Retrospective Study

“…Shah et al 6 scanned 7886 patients and found the transmigration rates as 0.1% for mandibular canines. Aktan et al 29 studied in a Turkish population and their results indicated 0.34% mandibular and 0.14% maxillary TCs. In our study, we found the total transmigration rate as 0.08%.…”