A Variation in Tooth Position-180o Rotated Maxillary Second Premolar Key words: Maxillary premolar, Morphogenic fields, 180° rotation

CASE REPORT A 37–years old male patient of Indian origin was referred to the Department of Conservative Dentistry and Endodontics for treatment of carious teeth. An intraoral examination revealed an Angle’s Class I molar relation with a well aligned upper and a lower arch. Full complement of permanent teeth was present. Generalized dental fluorosis was seen in teeth of both arches. Though the teeth were in good contact in the posterior segment, an interdental spacing was observed in the anterior quadrant. It was interesting to find that the maxillary left second premolar was rotated through 180°, with its buccal surface facing palatally and its distal surface facing mesially [Table/Fig-1 and 2]. Premolar arrangement was normal in the other three quadrants. In addition, bilateral accessory central cusps were observed on the occlusal surface of maxillary first molars.