Pattern of Dental Malocclusion in Orthodontic Patients in Erbil City, Kurdistan Region-Iraq, A Retrospective Study

Aim: Aims of this study were to assess the pattern of malocclusion in Erbil City, Kurdistan region- Iraq.

Methods: A retrospective study includes 1212 patients (589 males and 623 females) that attended orthodontic department at the khanzad polyclinic teaching center / Erbil city, Iraq, aged 11-17 years old with a mean age of 13.49 ±1.02 years that randomly selected. The normal occlusion, malocclusion, overjet, overbite, spacing, crowding, cross bite, midline shifting and midline diastema were examined.

Results: Study demonstrated that 309 (25.5%) of patients had normal occlusion. Class I malocclusion was found in 655 (72.5%), class II was found in 176 (19.5%), and class III malocclusion 72 (8.0%) patients of all examined. Crowding and midline shifting were observed more frequently in females, however, normal bite and posterior open bite were observed more frequently in males and normal crossbite more frequently in both genders.

Conclusion: Results of this study showed class I molar relationship was the most prevalent type of occlusion in Erbil City, Kurdistan Region-Iraq area and the most prevalent malocclusion was crowded.