بررسي فراواني Hypodontia در دانش آموزان 15 ساله دبيرستانهاي شهر اهواز در سال 1381

A study on prevalence of Hypodontia in 15 year old students in Ahwaz 2002

Background & Aim: The purpose of this study was to determine the prevalence of hypodontia in 15 year old students (boys & girls) in AHWAZ on 2002. Method & Materials: This study was a descriptive Cross Sectional investigation with randomized cluster sampling on 866 Students (15 years old). Data collection is done with radiography, questionnaire and clinical examination. Results: The radiographical prevalence of hypodontia (excluded third molars) was %4 that in females (%4.8) was more than males (%3.4), that isnʹt significant (p=0.3). The order of frequency of congenital missing is: 1. Maxillary lateral incisors (%35.8). 2. Mandibular second premolar (%28.4). 3. Mandibular central incisor (%8.9). The congenital missing teeth on maxilla are more common. Conclusion: Hypodontia is more common on girls and maxilla. The order of congenital missing is: 1. maxillary lateral incisor, 2. mandibular second premolar and 3. mandibular central incisor.