Abstract
The present study was conducted to examine the relationships between the caries activity in mothers and caries prevalence of their children as well as the life style of the children and the status of their caries. The subjects were 98 pairs of mothers and children who participated in all of the dental health examinations at three-months, six-months, nine-months, twelve-months, eighteen-months, twenty-four-months, thirty-months, and thirty-six-months. The following results were obtained.