There's Help For Sensitive Teeth: What Helps a Toothache?

Sensitivity generally occurs when a tooth's dentin is exposed to heat, cold or acidity. Normally the sensitive dentin is protected by the bony enamel above the gum line and the cementum below the gums. However, if these protective coverings are damaged or worn away, the result can be hypersensitivity and occasional discomfort.

It is recommended that you discuss sensitivity with your dentist. Cavities, fractured teeth, periodontal disease and exposed tooth roots can cause sensitivity. Tooth bleaching can also cause temporary sensitivity.

Your dentist can review proper oral hygiene techniques with you, since over-brushing or poor oral hygiene can also lead to or aggravate sensitive teeth.

Regular use of desensitizing toothpaste can help block the transmission of sensation from the tooth surface to the nerve. Desensitizing toothpaste usually requires several applications before the sensitivity is reduced.

If the desensitizing toothpaste does not ease your discomfort, your dentist may suggest in-office techniques. A fluoride gel, which strengthens tooth enamel and reduces the transmission of sensations, may be applied to the sensitive areas of the teeth.

If receding gums cause the sensitivity, your dentist may use agents that bond to the tooth root to "seal" the sensitive teeth. The sealer usually is composed of a plastic material.

Some sensitive teeth that don't respond to other treatments might need root canal treatment to eliminate the problem.