Interdisciplinary treatment of a severely displaced mandibular canine: a long-term follow-up.

lent in the mandible than in the maxilla,1,2 and impacted mandibular canines that have migrated to the opposite side of the midline (transmigration) are even more rare.3-7 Orthodontic cases such as these sometimes need significantly longer treatment time than usual, however, often requiring the advice and care of a specialist in periodontics. Be cause repositioning of impacted canines can involve periodontal complications and can pose a similar risk to adjacent teeth,8 these teeth may need to be monitored periodontally for many years following orthodontic treatment. With the refinement of techniques for surgical exposure and tissue augmentation and regeneration, the prognosis for these challenging conditions continues to improve. Proper diagnosis, surgical management, and application of orthodontic biomechanics are all critically important to en sure mucogingival health. The following case study describes the treatment of a se verely displaced and impacted mandibular right canine, with 18 years of follow-up observation.