Dentinal Hypersensitivity

The cause of tooth sensitivity

Tiny channels called tubules connect the pulp to the outer layer of dentine. The openings of these small channels act like receptors of sensations. These receptors are normally well protected under their “armour” (the enamel and cementum). But when this protective layer is no longer sufficient to seal the tubules, receptors are directly exposed and the sensations are virtually instantaneous.

The tubules can easily be uncovered:

• By a thinning of the crown enamel (caused by acids, wear and tear);
• By gingival recession (gum loss at the level of the tooth crown, which uncovers the cementum, the protective layer of the root).

Thus, even without tooth decay, the weakened teeth can feel sharp and sudden pain. Fortunately, there are several methods to correct this problem.

Ways to reduce or eliminate dentinal sensitivity

First, it is necessary to desensitize your teeth as soon as possible. The use of toothpaste for sensitive teeth will temporarily seal the tubules and stop these sudden pains when in contact with stimuli. The use of a mouthwash for sensitive teeth may also help you.