Melbourne Smile Clinic

What causes bad breath?

Bad breath (scienfic word: Halitosis) can be caused by factors linked to the mouth and teeth (intra-oral) or due to health issues arising from the lungs, digestive system or hormonal disturbances (extra-oral).

The most common causes of bad breath are intra-oral. The build up of bacteria in the mouth, associated with poor oral hygiene, is one of the main causes. Bacteria grow on plaque (food debris) which builds up around teeth, under the gum margins and tongue surface, hence the need for thorough brushing, flossing and regular professional cleans. More severe cases of bad breath can be attributed to established gum disease as a result of poor oral hygiene and neglect over an extended period of time. The types of bacteria in the oral cavity evolve over time if the plaque level keeps growing and this  can lead to more virulent bacteria that cause gum disease and bad breath. 

Large cavities in a tooth and infected teeth are also breeding grounds to bacteria that contribute to bad breath. The wearing of appliances such as braces and dentures can also make oral hygiene more difficult, increasing the level of plaque bacteria in the mouth that contribute to bad breath.

If you are concerned about possibly having bad breath, the Melbourne Smile Clinic is able to assist you with the right advice. Call us or book an appointment online. 

Reference: Halitosis: Prevalence, risk factors, sources, measurements and treatment- a review of the litterature. Wu J., Cannon R., Ji P. et al. Australian Dental Journal (volume 65, issue 1, pages 4-11), March 2020


Covid-19 update: All dental procedures are provided under Level1 Restrictions. Covid-19 precautions are being observed.
Patients with Covid-19, who have been close contacts of a case, who have been overseas in the last 2 weeks or who have symptoms are requested to defer dental treatment until testing negative to Covid-19. Patients are asked to wear a mask in the waiting room and to observe social distancing. Patients also need to sign in using the QR code at reception. Hand sanitisation and a hydrogen peroxide mouthrinse will be required of patients before being seen.

For more information, please contact us.