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he most frequently impacted tooth in the dental arch after the third molars is the maxillary canine. The incidence of its impaction is between 1 and 2.5 %. Impactions of canine can be either buccal or lingual.1 Around 85% of impactions are palatal while the remaining 15% are buccal. Canine impaction occurs twice as more in the maxilla than in the mandible. In subjects with impacted maxillary canines, 8% of impactions occur bilaterally.2 The etiology of palatal canines is accepted to be multifactorial and of a complex nature. The two accepted theories for this anomaly are guidance theory and genetic theory. The guidance theory stresses on the impact of lateral incisors on the eruption of palatal canines and also states that absent, peg or anomalous lateral incisors lead to the impaction of maxillary canines. The genetic theory explains the occurrence of different dental anomalies that occur along with palataly impacted canines e.g. infraoccluded deciduous molars and ectopic eruption of maxillary 1st molars.3,4 Maxillary width is usually decreased in patients with buccaly impacted canines5 but the relationship between width of maxilla and palatal canines is questionable. McConell in a study implicated maxillary width deficiency as a factor for palatal canine displacement.6 On the other hand, Langberg and Peck found no statistical significant difference in the 1. Senior Lecturer, Department of Orthodontics, Bahria University Medical and Dental College. 2. Associate Professor, Department of Orthodontics, Bahria University Medical and Dental College. 3. Senior Lecturer, Department of Orthodontics, Bahria University Medical and Dental College. 4. Researcher & Consultant Statistician, Department of Physical Therapy, Bahria University Medical and Dental College. Corresponding author: “Dr. Omair Majeed” < dromairis@hotmail.com >

Lack of Association of Palataly Impacted Canines with Maxillary Arch Width and Lateral Incisor Anomalies