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August 10, 2026BMC Oral HealthOpen Access

Dental caries experience in first permanent molars and its associated factors among Iranian primary school-aged children: a cross-sectional study

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Authors

SSSamaneh ShirahmadiHamedan University of Medical SciencesSKSalman KhazaeiHamedan University of Medical SciencesPSParisa ShokouhiUniversity of British Columbia

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Overview

Cross-sectional study assesses dental caries in first permanent molars among children, highlighting implications for oral health interventions.

Key Points

  • The aim is to assess dental caries experience in first permanent molars and identify associated factors among Iranian primary school-aged children.
  • Cross-sectional study conducted among 2,920 primary school students aged 7–12 years.
  • Dental examinations were performed by a single calibrated dentist using WHO criteria.
  • Associations with sociodemographic and oral health behaviors were analyzed using multiple logistic regression.
  • The mean DMFT for first permanent molars was 1.56 (SD 1.51), with the highest mean observed at age 12 (mean 2.17, SD 1.50).
  • The odds of caries experience increased with age (OR = 1.56, 95% CI [1.49–1.65], p<0.001) and were higher in girls (OR = 1.42, 95% CI [1.21–1.67], p<0.001).
  • Children whose fathers had lower education had higher odds of caries experience (OR = 1.55, 95% CI [1.22–1.97], p<0.001).

Cite This Study

Shirahmadi et al. (2026) studied this question.

synapsesocial.com/papers/6a797d3a9c20a9bbd31846eahttps://doi.org/10.1186/s12903-026-09354-8
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