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Tooth Sensitivity Causes
Tooth Sensitivity Causes
What is it?
Tooth sensitivity
is something that affects a number of people. It is often caused by eating or
drinking something hot, cold, sweet or acidic. Under normal conditions, the
underlying dentin of
the tooth (the layer that immediately surrounds the nerve) is covered by the enamel in
the tooth crown, and the gums that
surround the tooth. Over time, the enamel covering can get thinner, thus
providing less protection. The gums can also recede over time, exposing the
underlying root surface
dentin.
The
dentin contains a large numbers of pores or tubes that run from the outside of
the tooth to the nerve in the center. When the dentin is exposed, these tubes
can be stimulated by changes in temperature or certain foods. Here is an image
of what the dentin tubes look like under the microscope:
What causes it?
Exposure of the dentin can occur due to a number of factors. Some of the more
common reasons are:
- · Gum recession due to age or improper tooth brushing
- · Acidic beverages (such as soda) that cause enamel erosion and dentin exposure
- · Tooth grinding – this may actually cause most or all of the teeth to feel sensitive
- · Brushing with a very abrasive toothpaste, brushing incorrectly and/or brushing more than three times a day could result in a loss of enamel
- · Gum disease, which can result in gum recession
- · A chipped or fractured tooth may expose the dentin
In
addition, some dental treatments can cause sensitivity. Treatments such as such
as teeth whitening, professional dental cleanings, having braces put
on or getting a filling placed have been known to cause sensitivity during or
after the procedure.
What can I do about it?
The first step in doing something about dental sensitivity is to find out what
the cause is – a dental professional can help you with this. If the sensitivity
is due to exposed dentin, there are a number of steps you can take, as can your
dental professional, to help reduce the sensitivity. These can include:
- · Using a very soft bristle tooth brush
- · Brushing correctly to help prevent abrasion of the enamel and recession of the gums
- · Using a toothpaste specially formulated to help reduce sensitivity
·
The dental professional can:
o Apply a fluoride varnish
on the sensitive areas to help strengthen the tooth
o Prescribe a high fluoride tooth paste to use every day
o Place a dental restoration to build up the areas that have
lost enamel
In
the end, whether you need an in-office procedure or over-the-counter products,
the most important step is to see a dental professional so that he or she can
determine the cause of the tooth sensitivity and
help you find a solution that will work.
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