Hypodontia in orthodontic patients in southern Jordan

ABSTRACT

The aim of this study was to investigate the prevalence of hypodontia among patients who were treated in three main hospitals namely Prince Ali Hospital, Zaid Hospital and Princess Haya Hospital located in southern Jordan. A total of 1726 orthodontic patients were included in the study with an age range between 12 and 25 years. Patients with cleft lip and palate, ectodermal dysplasia, or having tooth loss due to caries, trauma, periodontal disease or congenitally missing third molars were excluded from the study. Dental history and panoramic radiographs were used in the diagnosis of congenitally missing teeth. The prevalence of hypodontia was 7.1% excluding third molars; 2.10% were males and 5.01% were females. The total number of missing teeth was 197. The most commonly missing teeth were maxillary lateral incisors, followed by maxillary and mandibular second premolars. The number of missing teeth were greater in the maxilla than in the mandible. Hypodontia was almost equally distributed between both sides of jaws. There was significant difference between the type of malocclusion and the number of missing teeth. The majority of patients had one or two missing teeth