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Article
An Orthopantomographic study of hypodontia in permanent teeth of Iraqi patients

Author: Dr. Shahbaa A.Mohammed Al-Ajwadi,B.D.S.,M.Sc. د. شهباء محمد
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2009 Volume: 6 Issue: 2 Pages: 139-144
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

The congenital lack of one or more permanent teeth is a common anomaly in man .By definition, congenitally missing teeth are those that fail to erupt in the oral cavity and remain invisible in a radiograph, which implies this caused by disturbance during the early stages of tooth development.389 orthopantomograms of healthy patients were used the number of males were 194 and the number of females were 195.The patients has visited the hospital of college of dentistry of Baghdad university between 2006 and 2008.Thy were aged between 13 and 27years at the time the OPGs were taken .All OPGs were analyzed by viewer .The congenitally missing teeth were identify first clinically and confirm by the OPGsThe hypodontia mostly seen in upper lateral incisors, and lower second premolar, flowed by lower central incisors, upper central incisors, and lastly the lower lateral incisor, there were gender difference in hypodontia, but both genders show high percentage of upper lateral incisors hypodontia, 60.31%for males, and 72.30%for females. The hypodontia of lower second premolar in males 18.56%,and in females 14.5%.The hypodontia of upper central incisors in males 2.577%,and 0%in females. The hypodontia for lower central incisor in males 12.89%, and 13.3%in females. The hypodontia for lower lateral incisors in males 5.67%, and in females 0%.From these percentages it was clear that there were difference in hypodontia of upper and lower arches.To evaluate the frequency of hypodontia and compare its appearance between males and females and between upper and lower jaw.


Article
Assessment of Congenitally Missing Teeth in Prosthodontic Patients

Author: Dr. Ali Sultan Al-Refai * د. علي سلطان
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2007 Volume: 4 Issue: 1 Pages: 86-92
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Congenital missing of one or more teeth, excluding the third molars is relatively common, but anodontia or oligodontia is rare and may be associated with ectodermal dysplasia. In this study, it was found that among (379) prosthodontic patients, one patient had anodontia representing (0.26 %) of the cases and need complete denture for esthetic and functional demands, and two patients had oligodontia representing (0.52 %). These percentages were higher than other studies in the world, may be due to environmental and / or congenital causes.

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