Most common way of diagnosis for tooth sensitivity is to perform three tests. First is to see if it is sensitive to hot or cold. This can be done by blowing air on tooth or using a piece of ice. Second is to see if tooth is sensitive to pressure which is done by placing firm pressure on different sides of the tooth using an instrument or fingers. Third is checking to see if tooth is sensitive to percussion or tapping, which is usually done by an instrument. Each one of these tests will give the dentist different clues to what is causing the sensitivity for that tooth.
Tooth sensitivity is often first diagnosed by the patient. Most often, he/she will be aware of sensitivity to cold, or to the touch of a fingernail or toothbrush. The dentist then performs an examination, take x-rays, and determine the source of the problem and the best means of treatment.

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Your dentist will examine your teeth with a probe, called an explorer, to determine if there is decay and exposed roots. X-rays can also help determine if tooth decay or nerve problems might be causing your sensitivity. If there is, your dentist may recommend a filling, a root canal treatment and better oral hygiene practices, fluoride mouth rinses.
Sensitive teeth are usually first noticed by the patient after eating certain foods or brushing and flossing causing pain. If you experience this problem, contact you dentist. Sensitive can be treated. A dentist must first determine the cause of the problem in order to offer appropriate treatment, and this can be done by a visual examination or x-rays.
It is important to determine the cause of tooth sensitivity in order to treat it properly. Your dentist will perform a series of tests beginning with a visual examination. Next, tests involving temperature and pressure will be done. If necessary, an x-ray may be needed in order to determine the exact cause of the sensitivity so that the proper steps can be taken to treat the cause of the problem.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.