Hypodontia prevalence with distribution pattern of orthodontic patients in middle Euphrates, Iraq

The aim of this study was to explore the effect of permanent teeth hypodontia prevalence and distribution in Iraqi orthodontic patient and to compare the finding with other previousstudies.A digital panoramic radiograph of 2500 orthodontic patients for 2 years (2018-2019) were used in this study to diagnose 84 hypodontia25 malesand59 females. Whole permanent teeth were included except 3 rd molar.Statistics analysis was done by using SPSS.The hypodontia prevalence in a group of Iraqi orthodontic patients was3.36 %. The most often missing tooth was the maxillary lateral incisors andto a less degree the mandibular second premolars then the least was the maxillary first premolars andmaxillary canine. Most of the cases had hypodontia of two teeth followed by one tooth missing and the hypodontia in females more than in males. In conclusion, the hypodontia prevalence in a group of Iraqi orthodontic patients was3.36 % and was within the average rate of most studies were published. Hypodontia was significantly more common in females rather than in males. Most of patient show missing one or two teeth.The maxillary lateral incisors found to be the most frequently missing teeth, the mandibular second premolar were pursuing the second missing tooth followed by maxillary second premolar. The early detection of hypodontia is very important to understand of their etiology and to offer preventive modality of management.