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The prevalence and distribution of anomalies of permanent teeth in 6-17-year-old children in a selected Iranian Population
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Parva Shakerian   , Hajar Attarzadeh * , Farank Jalalian , Elham Parham |
| Department of Pediatric Dentistry, Faculty of Dentistry, Isf.c., Islamic Azad university, Isfahan, Iran |
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Abstract: (33 Views) |
Background: Dental anomalies can lead to malocclusion, aesthetic issues, increased caries risk, difficulties with tooth extraction and root canal treatment, and other oral diseases. Therefore, early identification of anomalies can assist the clinician in the initial stages of anomaly diagnosis. This study aimed to evaluate the frequency and prevalence of dental anomalies in a group of Iranian children aged 6-17 years.
Materials & Methods: In this cross-sectional descriptive-analytical study, 500 panoramic radiographs of children aged 6 to 17 years (272 girls and 228 boys) from the archives of the radiology department were included. Two examiners evaluated and interpreted the data, and the prevalence of dental anomalies was assessed by age group, gender, upper and lower jaws, and specific teeth. Data were analyzed using Fisher's exact test and chi-square tests (α=0.05).
Results: The overall person-based prevalence of having at least one dental anomaly was 37.6% (188 out of 500). No significant difference was observed between girls (40.1%) and boys (34.6%) (P=0.212 ). However, prevalence significantly increased with age (P<0.001 ), peaking in the 14-17 years group. A total of 198 anomalies were detected, with tooth impaction (10.6%) and agenesis (9.0%) being the most frequent. Anomaly-based analysis revealed no significant difference in distribution between the upper (54.0%) and lower jaws (46.0%) (P=0.108). However, anomalies were significantly more concentrated in the anterior region (54.5%) than in the premolar and molar regions (P<0.001 ).
Comments in the abstract are not fully addressed, and the abstract is shorter than the previous version.
Conclusion: Dental anomalies were observed in more than one-third of the pediatric population, with the highest frequency observed for tooth impaction and agenesis of anterior teeth.
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Type of Study: Research |
Subject:
Oral & Maxillofacial Pathology
Received: 2026/06/13 | Accepted: 2026/06/20 | Published: 2026/06/20
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