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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

Publication:
March 2008
Volume 39 , Issue 3

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Survey on hypodontia in Sayada, Tunisia

Fethi Maatouk, DMD, DDS/Ahlem Baaziz, DMD/Senda Ghnima, DDS/Fatma Masmoudi, DDS/Hichem Ghedira, DMD, DDS

Page: 265 PMID: 18618026

Objective: To determine dental agenesis prevalence in Sayada, Tunisia, a town from where many patients attend the Pediatric Department of Monastir University Dental School for such abnormalities, and to analyze its mode of inheritance. Method and Materials: A total of 262 schoolchildren in permanent dentition (134 females and 128 males) aged 12 to 18 years (mean, 14.1 1.2 years) were examined to detect dental agenesis. In the case of a missing permanent tooth, a panoramic radiograph was taken to confirm diagnosis. A family survey questionnaire was completed for each case of multiple agenesis (at least 4 teeth missing). Results: Findings revealed a dental agenesis prevalence of 13.3%. Altogether, 62 teeth were missing. No case of syndromal agenesis was detected; however, 12 children presented multiple agenesis (34.3%). The family survey was completed for only 9 of these subjects. Conclusion: Literature review showed a lower dental agenesis prevalence (3% to 7%) than did the present study. In the present study, females were more affected by this abnormality than males (16.4% and 10.3%, respectively). With the exception of third molars, the tooth most often missing was the mandibular second premolar (30.6%), followed by the maxillary second premolar (17.7%); hypodontia seemed to be symmetrical. Family surveys revealed a high rate of consanguinity in Sayada. Pedigree analysis of 9 families showed that dental agenesis was probably related to an autosomal dominant inheritance. (Quintessence Int 2008;39:265)

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