Comparison of dental caries (DMFT and DMFS indices) between asthmatic patients and control group in Iran: a meta-analysis.BACKGROUND
 Meta-analysis is the statistical procedure for combining data from multiple studies and reducing the differences among parameters due to the increased number of studies involved in the analysis process.  Therefore, the present study aimed to determine the relationship between dental caries using decayed, missing, filled teeth indices (DMFT, dmft, and DMFS indices) and asthma using meta-analysis.



Meta-analysis
Quality assessment was performed based on the Newcastle-Ottawa Quality Checklist (NOS). 
Newcastle-Ottawa Quality Checklist (NOS)
After that, standardized mean difference (SMD) of DMFT, dmft, and Decayed, Missing, and Filled Surfaces (DMFS) indices were estimated.



standardized mean difference (SMD)