“Dental caries prevalence and severity in relation to residential factor among (6-9) years school age children in two different area in Baghdad city” (2021) Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), 28(2), pp. 31–45. doi:10.55562/jrucs.v28i2.387.