Patient safety is a quality dimension in health care, because there is a certain degree of danger in each step of the process; focusing on the use of medicines, the most harmful problems are related to errors in the selection of medicines and their correlation with the diagnosis and in the unjustified use of them. The objective of this study was to analyze drug prescription situations in relation to patient safety. It is a prospective, observational and descriptive study; of a sample made up of all the prescriptions received during 12 continuous months, prescribed by dentists for oral pathologies, from a social service institute, in the city of Corrientes, Argentina. The prescription situations were analyzed into adequate and inadequate, and the latter were subdivided into: a) excessive prescription or undermedication and b) inappropriate prescription in relation to the indicated medicat...