Tooth sensitivity, also known as dentinal sensitivity has been identified as a very common problem. Approximately one out of every four adults has one or more sensitive teeth and although once believed to affect mostly older adults, this sensitivity is now being experienced in patients of all ages.
Sensitivity can be described as a short sharp pain triggered
by a stimulus such as cold or hot foods/beverages, sweet,
sour, or acidic foods and even brushing and flossing
People at the highest risk of dentinal sensitivity are
the aggressive brushers. These people strip the gum tissue
away and remove the underlying layer of the tooth root
surface (the cementum). Because the cementum is very thin,
it doesn't take much pressure to wear away this surface
and expose the inner substance, dentin.
Dentin contains numerous tubules (tiny tubes) filled
with fluid that extend from the pulp chamber in the center
of the tooth to the outer surface of the tooth. The pulp
chamber houses the nerves that signal the pain response.
So when a stimulus such as cold air or drink comes into
contact with the open and exposed tubule on the outside
of the tooth, it creates a pressure change in the fluid
in the tubules. This pressure change then triggers the
nerves in the pulp chamber, resulting in a short, sharp
pain response, known as tooth sensitivity.
Prevention begins with minimizing the risk of exposing
dentinal tubules by brushing gently and using a toothbrush
that will be soft on your teeth and gums.
Because of its gentle cleaning action, Sonicare toothbrush
is ideal for patients who have sensitive teeth. With extra-soft,
nylon bristles and an extra-wide sweeping motion, it is
clinically proven to be gentle yet effective at removing
bacteria and keeping your mouth clean and healthy even
if your teeth are sensitive.
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Teeth
can be sensitive to hot and cold temperatures, very
sugary or acidic foods and drinks and vigorous toothbrushing.
This kind of sensitivity is often called "dentin
hypersensitivity". Your dentist or hygienist can
recommend a treatment or products that can help
overcome the problem.
A
desensitizing toothpaste should be used with a soft-bristled
toothbrush. Sensitive toothpastes reduce the pain
of sensitive teeth normally after only a few days
of use, and continued protection is provided by
regular use.
