Transmigration of Mandibular Canines

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.

Combined orthodontic-surgical management of a transmigrated mandibular canine

“…The most common approach was to extract the transmigrating tooth, 5,8 and then either to treat the malocclusion orthodontically or not to treat the patient, 19,29 considering the doubtful prognosis of TMC repositioning. 20,30 Indeed, orthodontic-surgical TMC repositioning is discussed in very few reports. 1,9,20 According to Wertz,31 when nonextraction orthodontic treatment is indicated, TMC surgical repositioning should be attempted.…”

“…20,30 Indeed, orthodontic-surgical TMC repositioning is discussed in very few reports. 1,9,20 According to Wertz,31 when nonextraction orthodontic treatment is indicated, TMC surgical repositioning should be attempted. In fact, TMC surgical repositioning followed by extrusion with light orthodontic forces to avoid ankylosis or external root resorption has the best long-term prognosis, as reported by Becker and Chaushu 32 in a long-term follow-up study.…”

“…However, such repositioning has been described in few case reports, 1,9,20 and the required tooth movement would be complex, extensive, and protracted, with the risk of jeopardizing the roots and damaging the supporting structures of the canine and adjacent teeth.…”

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

“…Umashree et al 35 reported that 3 of 4 transmigrant canines would be followed periodically and only one TC was extracted. Similarly, Ün et al 36 did not make any intervention for 5 mandibular TCs.…”

Unusual intrabony transmigration of mandibular canine: case series (report of 4 cases)

“…Transmigration is more often seen in the mandibular arch than in the maxillary arch 3. The tooth commonly involved is the lower mandibular canine.…”