People with dry mouth (xerostomia) have a higher risk of oral health issues because saliva, which normally washes away food particles and neutralises acids, is reduced, leading to increased plaque build-up, tooth decay, and gum disease.

Saliva also has antibodies to fight away bacteria, contains minerals to help strengthen enamel and it lubricates the mouth to protect oral tissues from irritation and infection.

Here are some useful tips to help reduce problems caused by dry mouth:

• Make sure you have a good oral hygiene routine.
• Stay hydrated by having plenty of sips of water throughout the day.
• Chew sugar free gum to stimulate saliva flow.
• Avoid smoking and alcohol that can further dry out your mouth.
• Eat a healthy diet, limiting sugary and acidic foods and drinks.
• Speak to your doctor about your concerns as you may need a change in medication or they may want to prescribe you an artificial saliva.
• More information can be found at the Oral Health Foundation's website.