Tabriz University of Medical Sciences Journal of Dental Research, Dental Clinics, Dental Prospects 2008-210X 4 3 2010 10 01 Severe Rotational Drift of an Impacted Mandibular Third Molar: A Case Report 98 100 EN Ehsan Abouei Mehrizi Mostafa Esmaeili Gholamreza Eslami Amirabadi • Mohammadamin Narimani Journal Article 2010 06 25 2010 08 24 Third molar eruption is an unpredictable event. Occasionally, mandibular third molars undergo angular changes in young adults. This rotational drift is of unknown etiology, is not predictable and may facilitate the eruption or may make the impaction worse. A rare case is presented with severe rotational drift of a mesioangularly impacted mandibular third molar.