Status of decayed, missing, filled teeth index among Iranian children and adults: A systematic review and meta-analysis

Oral health status is one of the health-related priorities in Iran. The present study was conducted with the aim to systematically review the status of oral health in Iran using the decayed, missing, filled teeth (DMFT) index.
In this meta-analysis, all data available on DMFT were reviewed and 35 published studies were included in the study based on search strategy. To estimate overall DMFT and perform the meta-analyses, Comprehensive Meta-Analysis (CMA) software was used.
Of all 876 articles, 35 were included in the study. A total of 21849 individuals were included in the meta-analysis. The overall DMFT index was 3.65 [95% confidence interval (CI), 3.01-4.34]. In addition, this rate was 2.30, 8.60, and 3.85 among children, adults, and children with mental/physical disabilities with (CI 95%, 1.76-2.95), (CI 95%, 6.10-9.60), and (CI 95, 2.98-4.80), respectively.
Mean DMFT in the assessed published data was higher than that set forth by the World Health Organization (WHO). Further planning and taking effective preventive measures to improve the oral health status seems necessary.