A considerable number of Hispanic agricultural workers come to Northwest Michigan during the summer every year to harvest fruit and vegetable crops. The Department of Community Dentistry of The University of Michigan School of Dentistry helps provide dental services for these migrant workers and their families. Some 203 five-to-14-year-old children of migrant farm workers were examined for caries and periodontal condition and the results compared with recent national surveys. Traditional indicators of dental caries experience (DMFT/dft and DMFS/dfs indices), periodontal disease (PI), and oral cleanliness (OHI-S) were used by one examiner. These migrant children presented higher numbers of decayed teeth and lower numbers of restored teeth than United States schoolchildren generally. Migrant children also presented less caries-free teeth and higher PI and OHI-S scores than United States children generally.