Assessment of Extraction of Primary Canines in Treating Mesioangular Displaced Permanent Canines

Inclusion Criteria: The following inclusion (eligibility) criteria have to be fulfilled by the patients participating in the study: * Age of patients at diagnosis should be between 9 and 12 years old * Presence of firm maxillary primary canines * Identification of maxillary unilateral or bilateral mesioangular displaced maxillary canine by clinical examination . * Canine position will be confirmed by means of horizontal tube shift following Clark's rule using two peripaical radiographs of the canine region. Exclusion Criteria: * Any systemic condition, craniofacial syndromes or cleft lip and/or palate. * Patients with previous or ongoing orthodontic treatment Imaging exclusion criteria will be checked at baseline and follow-up. * Severe canine displacement according to Power and Short (Power and Short, 1993). This includes complete overlap of the canine relative to adjacent incisor and beyond (Stage 3). Severe angulation relative to the midline. Canine crown vertical height is above the full length of adjacent incisors roots (see index below for illustrations). * Severe Resorption of adjacent teeth, grade 3 or 4 according to Ericson and Kurol at baseline or during the trial (Ericson and Kurol, 2000). * Presence of pathology surrounding the canine (such as cyst, supernumerary, odontome). * Closed apex of mesioangular displaced canine