The prevalence and pattern of nursing caries in preschool children of Tehran.

This cross sectional study was carried out to determine the prevalence and pattern of nursing caries and its relevant factors in preschool children of Tehrari. 620 children aged 2-6 yrs were selected randomly from 22 kindergartens in Tehran. They were examined for dental caries. The criteria used for nursing caries was presence of caries on buccal or palatal surfaces of at least two maxillary incisors with absence of caries in mandibular incisors. A questionaire was used for evaluation of related factors.