sensitivity
Dentine sensitivity is a sharp, shooting pain in the teeth, usually experienced when eating hot or cold food and drinks, especially very cold items such as ice cream. It is very common, with women suffering more frequently than men. Sometimes the pain can persist as a dull ache in the affected tooth.
What causes sensitivity?
Sensitivity is caused when the dentine of the tooth is exposed, usually due to some trauma, such as erosion of the enamel from acidic drinks, over-brushing, physical damage, such as an accident, or plaque build-up which leads to gum inflammation or recession. The gum comes away from the tooth, exposing the sensitive dentine beneath. The dentine contains tiny tubules, the fluid contents of which are thought to act as sensory conductors to the nerves in the pulp at the core of the tooth. When the dentine is exposed, the teeth become particularly sensitive.
Sensitivity can also be caused by micro cracks which exist within the tooth but which are not immediately obvious from the external view.
How do you treat it?
It is important to visit the dentist to find out if the pain is due to true dentine sensitivity or another cause, such as tooth decay, a filling that needs to be replaced or, very commonly, a crack in the tooth. If dentine sensitivity is diagnosed, a range of sensitive toothpastes and mouthrinses are available, as are gentle brushes suitable for sensitive teeth. Some dentists recommend applying a small amount of sensitive paste to the affected tooth or teeth with the finger at intervals through the day, either instead of or as well as brushing with it in the normal way. This enables you to build up a protective layer, like a varnish, over the affected area. Fluoride in the toothpaste, especially in high concentration, appears to have an effect in reducing sensitivity, as well as being important for preventing caries (decay).
In more significant cases the dentist may require to undertake more radical treatments such as root canal therapy. If a tooth is sensitive because of a serious crack, a crown may also be needed to hold the tooth together and repair the damage.
If the cause of the sensitivity is gum recession due to over-brushing, you may benefit from advice on correct toothbrushing technique and possibly the use of an electric toothbrush, which cleans effectively and gently. If you drink a lot of acidic drinks, such as fizzy drinks or orange juice, these may be contributing to the problem by eroding the enamel. Brushing your teeth immediately after an acidic drink actually increases the damage, so it is advisable to wait a while to let the acidity in the mouth return to normal levels or chew ORBIT Complete sugarfree gum instead. However, gum is not a substitute for brushing and you should brush your teeth 30-60 minutes after the acid attack.
The dentist may suggest carrying out treatment of the teeth, if the sensitivity is severe, and may use a range of adhesives, resins or varnishes to seal in the exposed area.
Is sensitivity permanent?
Dentine sensitivity is painful and uncomfortable, but most cases will pass provided the cause is identified and treated. This may mean a permanent change in eating or oral health habits, to make sure the dentine is not exposed again.
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