Australian dental researchers from the University of Queensland and the University of Melbourne have revealed that while mouthwashes might be a common recommendation to treat inflammation and dental infection, many which are alcohol based might be exposing regular users to an increased risk of contracting oral cancer.

According to the researchers, although many popular mouthwashes actually do help in controlling dental plaque and gingivitis, these should be used in limited amount, while other oral hygiene methods like flossing and brushing should be given preference.

"The evidence shows an association that we should take seriously because oral cancer is a significant disease that has been rising over the last ten years, especially among younger people. My big concern is that people who smoke and drink heavily could be adding another risk factor when they use these kind of mouthwashes regularly", said lead researcher, Robin Seymour, a Professor of Restorative Dentistry.

For people who use mouthwashes with alcohol, the risk of oral cancer is hiked by as much as 9 times if they smoke, and 5 times if they drink.

Details of the study have been published in the latest edition of the National Prescribing Service journal Australian Prescriber.