Dental problems are common following treatment for head and neck cancer, particularly if treatment has had an impact on your salivary glands. Saliva helps to remove bacteria from your mouth so when it is not produced, bacteria stays on your teeth for longer, increasing your risk of tooth decay.
To address this it is helpful to take good care of your teeth and gums following your treatment. Oral saliva substitutes can also help. If you are not producing saliva, or you have had radiotherapy, an oral medicine specialist will help you to meet the unique dental and oral health care needs that will arise.
See the information in "During Treatment" for a more in depth look at this