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. 2013:2013:697671.
doi: 10.1155/2013/697671. Epub 2013 Mar 27.

Transmigration of mandibular canines

N Umashree  1 , Avinash Kumar, Tejavathi Nagaraj
Affiliations

Transmigration of mandibular canines

N Umashree et al. Case Rep Dent. 2013.

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.

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Figures

Figure 1
Figure 1
(a) Intraoral photographs showing clinically missing upper right canine, lower right canine and central incisors, and retained deciduous lower right canine and central incisor. (b) Panoramic radiograph showing impacted upper right canine and a reverse obliquely transmigrated lower right canine with its crown piercing the lower border of mandible at the level of opposite canine. (c) Lateral cephalogram showing obliquely lying lower right canine near the lower border of mandible.
Figure 2
Figure 2
Periapical radiograph showing transmigrated and erupted lower left canine in the midline.
Figure 3
Figure 3
(a) Panoramic radiograph showing transmigrated lower right canine under the apices of the incisors. (b) Surgically exposed transmigrated lower right canine.
Figure 4
Figure 4
Panoramic radiograph showing an ectopically erupting mandibular right canine excessively tilted mesially and agenesis of lower lateral incisors.
Figure 5
Figure 5
Flowchart depicting the various treatment options to aid in decision making for the management of canine transmigration.
See this image and copyright information in PMC

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