DENTINE HYPERSENSITIVITY

Sensitivity occurs due to loss of enamel (outer most layer of crown structure) or cementum (outer most layer of root structure) which leads to the exposure of the underlying dentin. So the main reason of sensitivity is exposure of dentin.

How do you know if you have sensitive teeth?

You may have sensitive teeth if you experience short, sharp pain in response to cold, heat, and pressure. Common triggers of sensitive teeth can be
- Cold or hot drinks
- Cold air
- Some dental proceduresSome of the most common causes of sensitive teeth include:

abrasion cavity 

attrition due to 

Why dentine layer exposed?

Receding Gums

Receding gums can be caused by conditions such as gum disease, which can expose the tooth's dentine and cause sensitivity. In contrast, brushing too hard with hard bristle toothbrush also will damage the tooth surface.

Brushing

Brushing too vigorously and hard bristle toothbrush can cause receding gums, causing further exposure of the dentine.

Gum Disease

When gum disease gets worse and damages the tissues and bone that support the teeth. One sign of periodontitis is sensitive teeth, as the receding gums leave dentine exposed. 

Teeth Grinding

If you grind your teeth when you sleep or during the day, you may be wearing down enamel.

•        Prevent gum disease by practice good oral hygiene.
•      Use a toothpaste specially formulated to treat the pain of sensitive

               teeth

•      Don't brush too hard.
•      Use a soft toothbrush, preferably one designed especially for sensitive 

               teeth

•      Avoid acidic foods that can wear away tooth enamel, such as wine, 

              vinegar salad dressings and soft drinks.

•      Avoid grinding your teeth. Ask your dentist about a mouth guard for 

              night time use.

•       See your dentist for regular check-ups, dental care recommendations and advice for your        

              sensitive teeth.

•       Dentcoating your sensitive teeth  http://www.dentcoat.com/startseite.html