Tooth Sensitivity Causes

The main cause of tooth sensitivity is when dentin becomes exposed. This is usually caused by the loss of tooth enamel.

Tooth enamel can be lost for a variety of reasons. Overly aggressive brushing is a major cause of enamel loss. Sometimes this happens simply from using a toothbrush that has bristles that are too hard. You always want to make sure to use a soft-bristled brush. Brushes with hard bristles, and even brushes with medium bristles, are simply too hard. You also want to avoid using back and forth motions as you brush. It is much better for your teeth and gums to use short, circular motions that are at a forty-five degree angle to the gumline. Acidic foods have also been known to cause enamel loss.

When our dentin is exposed, heat, cold, a change in pressure, or sweet foods are all examples of external stimuli than can cause tooth sensitivity. Our dentin contains microscopic tubules that connect directly to the nerve fibers within the pulp of the tooth. These tubules are designed to carry blood and nutrients to the dentin, but when they are exposed, they can easily reverse the flow of fluid to transmit external stimuli back to the nerve. Our nerve interprets that as tooth sensitivity.

If you are experiencing sensitive teeth, it is important that you have it checked out by a dentist. Other dental problems like cavities, a cracked tooth, or issues with a filling or restoration can wrongly be interpreted as tooth sensitivity.

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