Saliva is produced by the salivary glands in the mouth. It naturally protects the teeth, washing away plaque, debris and neutralising acid. A reduction or absence of saliva can be caused by a number of factors. Reduced saliva flow can lead to more plaque and debris build up which can increase the likelihood of a dental disease. It can also make eating, talking, and wearing dentures uncomfortable. There are products made by brands such as bioXtra which help alleviate symptoms and provide care and comfort to dry mouth sufferers.