Dental unit wastewater, a current environmental problem: a sistematic review

The dental unit waters are divided in two different groups, because of their chemical and microbial composition proprieties: in the first there is the “incoming dental unit water”, drinking water that arrived directly in the dental chair unit through the municipal water system; in the second there is the “waste water”, that represents the whole dental unit waste water. Regarding the lack of a complete systematic review on the quality of dental unit wastewater, the aim of the current research was to systematically study the incoming dental unit water and the waste one, focusing the attention on the problem of the wastewater contamination and its regulations