Intrabony cross arch migration (transmigration) of impacted teeth is a very rare dental anomaly. Transmigration is commonly seen in permanent dentition of the lower jaw. The tooth most commonly involved is the mandibular canine. The prevalence of transmigrated canine has been found to be only 0.14-0.31%. Transmigration of the canine most frequently occurs in a mesial direction resulting in migration across the mandibular symphysis to the opposite side of the dental arch. We report a case series (4 cases) of rare transmigration of mandibular canines and emphasise the need to use panoramic radiography in cases presenting with either over retained deciduous canines and/or missing permanent canines. We also propose a newer modification to the present classification of transmigration for one of these cases as the present classification does not include all the entities.
Peripheral ossifying fibroma is a common solitary gingival overgrowth thought to arise from the gingival corium, periosteum or periodontal ligament. Ossifying fibroma has the propensity to occur in cranial bones, but the peripheral variety shows a close relationship with the periodontal ligament and adjacent alveolar bone. It is more commonly seen in women (predilection of 3:1) and usually at a young age. This report describes an unusual presentation in an elderly man and presents a systematic way of diagnosing and treating peripheral ossifying fibroma.
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