Health service waste (RSS) from dental practice deserves attention in its management, as many materials generate environmental impacts. Professional misconduct due to lack of information can have drastic consequences. The aim of this work was to make a diagnosis about the perception of dental professionals regarding the disposal of waste. The methodological procedures were elaborated in the survey of data carried through a structured virtual questionnaire where the pre-selected professionals who used as their units of activities were oriented to answer. The collected data were entered into a statistical program to analyze the variables and variations between them. The results pointed to a lack of knowledge of the professionals analyzed, in relation to the legislation in force in the country, on the disposal of waste. Conclude that dentists can comply with the current control rules regarding the disposal of these wastes.