Correction of Mesially Impacted Lower Second Molar

Ahmet Arif Celebi, Ibrahim Erhan Gelgor, Bulent Catalbas


Impaction of the lower second molar is not a common problem, but it is very challenging for both orthodontist and oral surgeon. We report the case of patient who complained of a delay in eruption of both the upper and lower second molars. A panoramic radiograph revealed the presence of all permanent teeth and a severe mesial inclination of the left lower second molars and developing third molars. A removable appliance with an uprighting spring was fixed mouth. After two months, a miniscrew was applied maxillar posterior buccal area. And then, an elastic chain was put between miniscrew and lower second molar. Within a period of 4 months the tooth was completely upright. After 5 months, a panoramic radiograph revealed complete uprighting of the tooth, with bone regeneration. Orthodontic uprighting techniques using miniscrews are more advantageous and offer better long term prognosis than surgical uprighting. The timing of treatment and the biomechanics involved determine the success.

J Med Cases. 2011;2(6):236-239


Mandibular second molar; Miniscrew; Impaction; Uprighting spring

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