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What is
abrasion of teeth?
It is wearing of teeth due
to mechanical causes such as due to brushing of the teeth with a hard
brush, grinding of teeth, needle biting, etc.
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Why do
teeth become sensitive?
A normal tooth has outer
enamel that protects from external stimuli like heat, cold, sour food,
etc. Once the enamel is lost due to erosion, abrasion or decay the inner
sensitive dentin gets exposed. The dentin has nerve endings that transmit
sensations and therefore cause sensitivity.
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How
is sensitivity treated?
In initial stages, protective
desensitization tooth pastes that are commercially available are useful.
They have to be applied for a long period of time to get adequate relief.
If erosion/abrasion/cavity is noticed they have to be filled and in severe
cases, protection with metal caps may be necessary.
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