Intrusion of Overerupted Molars using Miniscrews and TMA Spring: A Case Report.

ABSTRACT

Over eruption of posterior tooth due to the loss of antagonist teeth causes occlusal and functional disturbances. To restore proper occlusion, intrusion of the overerupted tooth becomes essential before multidisciplinary reconstructive dental approaches can be initiated. Conventional orthodontic techniques do not intrude posterior teeth eff ectively, and almost all methods result in anterior extrusion rather than posterior intrusion. New absolute anchorages (miniscrews and miniplates) are said to make posterior tooth intrusion possible. Th is case report describes the treatment of a patient with supra-erupted maxillary right and left fi rst molars intruded with titanium molybdenum alloy spring and miniscrew anchorage. Th e results showed that the biological responses of the teeth and the surrounding bony structures to the intrusion appeared normal and acceptable. Periodontal health and vitality of the teeth were maintained throughout the treatment.