What causes sensitive teeth?

Our varnish services have become integral to our business. Under the protective enamel coating of teeth is a porous layer called dentin, made from thousands of microscopic tubules. Once this dentin is exposed, the nerve in the center of the tooth becomes susceptible to triggers such as cold food or drinks and responds with a short, sharp shock of pain.

Dentin can become exposed in two ways:

1. Gum recession — this can lead to the exposure of dentin in the neck of the tooth. Gum recession can be caused by over-enthusiastic brushing. Alternatively, it can be caused by poor brushing, which can lead to a build-up of plaque. This build-up can cause gum disease, which can ultimately lead to gum recession.
2. Acid Wear — this is caused by the wearing away of the protective enamel on your teeth, often caused by exposure to everyday acidic foods and drinks. Enamel on our teeth is the hardest substance in the body, but when we consume everyday foods like fruit, fruit juices, wine, carbonated beverages, and vinegar-based salad dressings that have higher acid levels, our enamel is temporarily softened.

Fluoride varnish is applied on the dentin where sensitivity occurs. This seals the tubules and prevents the triggers that cause the nerve to react. Depending on the severity of the sensitivity, more than one treatment may be necessary.