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Erosion is the loss of tooth enamel caused by acid attack. Enamel is the hard, protective coating of the tooth, which protects the sensitive dentine underneath. When the enamel is worn away, the dentine underneath is exposed, which may lead to pain and sensitivity.
Erosion usually shows up as hollows in the teeth and a general wearing away of the tooth surface and biting edges. This can expose the dentine underneath, which is a darker, yellower colour than the enamel. Because the dentine is sensitive, your teeth can also be more sensitive to heat and cold, or acidic foods and drinks.
Every time you eat or drink anything acidic, the enamel on your teeth becomes softer for a short while, and loses some of its mineral content. Your saliva will slowly cancel out this acidity in your mouth and get it back to its natural balance. However, if this acid attack happens too often, your mouth does not have a chance to repair itself and tiny bits of enamel can be brushed away. Over time, you start to lose the surface of your teeth.
Bulimia is a condition where patients make themselves sick so that they lose weight. Because there are high levels of acid in the vomit, this can cause damage to tooth enamel.
Acids produced by the stomach can come up into the mouth (this is called gastro-oesophageal reflux). People suffering from hiatus hernia or oesophageal problems, or who drink too much alcohol, may also find they suffer from dental erosion due to vomiting.
Acidic foods and drinks can cause erosion. Acidity is measured by its ‘pH value', and anything that has a pH value lower than 5.5 is more acidic and can harm your teeth.
Fizzy drinks, sodas, pops and carbonated drinks can cause erosion. It is important to remember that even the ‘diet' brands are still harmful. Even flavoured fizzy waters can have an effect if drunk in large amounts, as they contain weak acids which can harm your teeth.
Acidic foods and drinks such as fruit and fruit juices - particularly citrus ones including lemon and orange - contain natural acids which can be harmful to your teeth, especially if you have a lot of them often.
‘Alcopops', ‘coolers' and ‘designer drinks' that contain acidic fruits and are fizzy can cause erosion too.
Plain, still water is the best drink for teeth. Milk is also good because it helps to cancel out the acids in your mouth.
Many sports drinks contain ingredients that can cause dental erosion as well as decay. However, it is important for athletes to avoid dehydration because this can lead to a dry mouth and bad breath.
There are a number of things you can do:
As well as using a fluoride toothpaste, your dental team may suggest you use a fluoride-containing mouthwash and have a fluoride varnish applied at least every six months. They may also prescribe a toothpaste with more fluoride in it.
Dental erosion does not always need to be treated. With regular check-ups and advice your dental team can prevent the problem getting any worse and the erosion going any further. If a tooth does need treatment, it is important to protect the enamel and the dentine underneath to prevent sensitivity. Usually, simply bonding a filling onto the tooth will be enough to repair it. However, in more severe cases the dentist may need to fit a veneer. For more information see our ‘Tell me about' leaflet Veneers).
Costs will vary, depending on the type of treatment you need.
It is important to talk about all the treatment options with your dental team and get a written estimate of the cost before starting treatment.
If you need free and impartial dental advice please do not hesitate to contact our Dental Helpline or call 0845 063 1188 (local rate call in the UK).
An investigation into the effects of sport supplement drinks on dental health. R Kidner, Dental Health Vol 42 No 2 of 6 March.
Dental erosion - changing prevalence? A review of British national children's surveys. J Nunn and others, International Journal of Paediatric Dentistry,Volume 13, Issue 2, Page 98, March 2003.
Dental Erosion and Acid Reflux Disease. Schroeder and others, Annals of Internal Medicine, 1 June 1995; 122: pages 809-815.