 On September 28, 1928, Rodriguez Vargas published in the "Journal of the American Medical Association" his findings in the effectiveness of Iodine and other chemical agents as disinfectants of the mucous membranes of the mouth.Since then, other scientists have used the findings of his investigations as the basis in the study of the bacteriology of dental caries.Rodríguez Vargas earned a Bachelor of Science degree from Georgetown University, in 1924 where he was an Associate Professor of Bacteriology in the Ental School.