Fluctuating asymmetry was evaluated in the dental arcades of 112 children (60 male, 52 female) of alcoholic mothers. Only individuals who showed no signs of the fetal alcohol syndrome were included. When these results were compared with those of a control group of 120 normal children, the former group was found to be significantly more asymmetric. The present study showed that canines were the least asymmetric whilst lateral incisors showed the greatest levels of asymmetry. It is suggested that the elevated levels of fluctuating odontometric asymmetry in children of alcoholic mothers may be ascribed to prenatal stress, especially during the soft tissue stage of odontogenesis.