Abstract
The purpose of this paper is to present the first case of unusual reverse oblique (110 degrees to midsagittal plane) migration of mandibular right canine crossing the jaw midline and piercing the lower border of the mandible at the level of the opposite canine and also to report two more cases of transmigrated mandibular canine and one case of transmigrating mandibular canine. Mandibular canines are “cornerstone” of dental arch; their importance is manifested by their efficiency in masticatory function, stability of dental arch, and aid in maintaining natural facial expression. Early detection of this anomaly can help preserving these canines by orthodontic intervention or by surgical transplantation. This developmental anomaly is properly diagnosed by radiographic evaluation, which is primarily based on the panoramic radiograph. In patients with overretained deciduous canines or missing permanent canines, an intraoral radiograph should be supplemented with panoramic radiograph. This paper discusses the importance of early diagnosis of canine transmigration in treatment planning and reviews the various possible treatment options.
Highlights
Migration of teeth is a well-documented ectopia, the mechanism that causes the migration of a tooth is still not clear [1]
Aktan and associates reported a panoramic radiographic survey of 5000 patients and observed that transmigration of impacted mandibular canines was greater than the maxillary canines
The radiographic position of tooth was in accordance with type 1 mandibular canine transmigration classified by Mupparapu [10] (Figure 3(a))
Summary
Migration of teeth is a well-documented ectopia, the mechanism that causes the migration of a tooth is still not clear [1]. Aydin et al reported a panoramic radiographic survey of 4500 patients in a Turkish subpopulation, which revealed 14 cases of canine transmigration, out of which six were maxillary and eight mandibular canines, with an incidence of 0.31% [5]. Javid reported a radiographic survey of 1000 students which revealed only 1 case of transmigrated impacted mandibular canine [6]. Aktan and associates reported a panoramic radiographic survey of 5000 patients and observed that transmigration of impacted mandibular canines was greater than the maxillary canines. The aim of this paper is to report the first unusual case of reverse oblique migration of mandibular right canine crossing the jaw midline and piercing the lower border of the mandible which has never been reported in the literature so far. This paper discusses the importance of early diagnosis in treatment planning and reviews the various possible treatment options for canine transmigration
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