Sulaimani Dent. J. 2014; 1:91-93 Amin et al Introduction: The epidemiological data on prevalence of malocc- lusion is an important determinant in planning appropriate levels of orthodontic treatment (1) . Enormous epidemiological studies have been conducted to find the prevalence of malocclusion in different racial and ethnic groups. There are growing consensus that the incidence varies from one to another populations (2) . The Angle’s classification method has been widely used as a qualitative epidem- iological tool for malocclusion assessment (3) . To best of our knowledge, this is the first study looking for the prevalence of Angle’s classification among patients attending private orthodontic clinic in Sulaimani City. Method: This retrospective study conducted on orthodontic patients who attended a private orthodontic clinic in Sulaimani City (January, 2013 to May, 2014). The study enrolled 200 patients. However 29 patients were excluded as permanent 1st molars were absent. Patients were between 6-35 years of age and they were classified into three age groups (6-11, 12-17 and 18-35) (4) . Pre-treatment orthodontic records of 171 patients (fulfilled selection criteria) were obtained and used in this study. The inclusion criteria included patients with complete pre-treatment records, presence of permanent 1st molars (because Angle’s classification depends on 1st molars) and no previous orthodontic treatment. Case sheets and dental casts were used to collect the data. A quantitative analysis with Angle’s classification was used to describe the anteroposterior relationship of the maxillary and mandibular permanent 1st molars during maximum intercuspation. Results: In the present study, data from stone dental models of 171 patients seeking orthodontic treatment including 60 males (35%) and 111 females (65%) were analyzed (Figure 1). The participants’ age ranged from 6 to 35 years with mean age of 17.44 years. About half of patients [88 patients (51%)] were belonged to the 12-17 years age group. Whereas, the age groups 18-35 and 6-11 years were consisted of 54 patients (32%) and 29 patients (17%) respectively (Table 1). According to Angle’s classification; the patients’ malocclusion statuses were as follow; 56 patients were Class I (33%), 83 patients were class II (48%) and 32 patients were Class III (19%) (Figure 2). a Department of Pedodontics, Orthodontics, and Preventive Dentistry. School of Dentistry/ University of Sulaimani. (dranwar77@yahoo.com) b Department of Pedodontics, Orthodontics, and Preventive Dentistry. School of Dentistry/ University of Sulaimani. Angle’s classification of first molar occlusion among patients attending a private orthodontic clinic in Sulaimani City Sulaimani Dental Journal SDJ Anwar Ahmad Amin a , Awder Nuree Arf b & Zhwan Jamal Rashid b Abstract Objectives: The aim of this study were to find the prevalence of Angle’s classification and distribution of malocclusion amongst patients attending a private orthodontic clinic in Sulaimani City. Method: Pre-treatment orthodontic records of 171 patients of both genders and different age groups fulfilled selection criteria were obtained for the study. The data from case sheets and dental casts were analyzed to determine the prevalence of angles class I, class II, and class III malocclusion. Results: Malocclusion was found to be higher in females than males. Patient’s malocclusions were as follow: 56 (33%) Class I, 83 (48%) Class II, and 32 (19%) Class III. Patients of 12-17 years age group were found to be more interested in orthodontic treatment than other age groups. Conclusions: Class II malocclusion created almost half of the patients seeking orthodontic treatment in private clinic in Sulaimani City. Furthermore majority of orthodontic cases were young patients (12-17 age group) with females showing a higher percentage than males. Keywords: Dental malocclusion, Angle’s classification, Orthodontic patient. Received: September 2014, Accepted: November 2014.