Bilateral 90° rotation of maxillary second premolar: a rare case report in Nigeria and review of literature

Bilateral 90° Rotation of Maxillary Second Premolar

Abstract

Background: Rotation of a tooth within the dental arch is a clinical finding considered an observable mesiolingual or distolingual displacement of the tooth around its longitudinal axis. The reported prevalence of rotated teeth is between 10.2-20.2% in permanent dentition. It can either be unilateral or bilateral, with varied degrees of rotation.

Objective: To present a case of bilateral 90° Rotation of Maxillary Second Premolar, a rare finding that has never been reported in our environment.

Case Report: Case presentation of a 14-year-old male who was presented to the Orthodontic unit, Department of Child Dental Health, Aminu Kano Teaching Hospital, Kano, with a chief complaint of misaligned upper posterior teeth. The bilateral 90° rotated maxillary second premolars were diagnosed based on direct clinical assessment.

This reports a rare case of bilateral 90° rotated maxillary second premolars etiologic factors, prevalence, and the highlight of treatment plans in a 14-year-old male.

Conclusion: Bilateral 90° rotation of maxillary second premolars teeth within the dentoalveolar arch are clinical findings not often seen in the population.