Have you experienced a sharp sensation in teeth when you have anything sweet, cold or hot? This is called sensitivity.
Reasons for sensitive teeth-
Wearing away of tooth structure- If the topmost hard layer of enamel gets worn off due to harsh brushing, vomiting, sipping too much soda, bad food habits, attrition or any other reason, it causes sensitivity
Decay in teeth. Decayed teeth again expose the inner layers of teeth causing this problem
Gum recession. Due to gum disease, the gums attached to the tooth slips away, exposing root of the tooth. This root is not covered by enamel, hence sensitivity occurs.
Visit your dentist to ascertain the cause of sensitivity. The dentist will prescribe you one or more of the following treatment options-
Use of desensitising toothpaste/cream
Applying desensitising agent on teeth
Applying varnish on teeth
Restoration of wear facets or decayed teeth
Root canal treatment
Treatment of gum recession
Never just start using a desensitising toothpaste before getting the cause of the sensitivity determined. The desensitising toothpaste will mask your symptoms but the underlying problem will not be solved. Delaying treatment will cause bigger problems in future causing more loss of time, money and health.