Why are my teeth sensitive all of a sudden?
Tooth sensitivity is common and can develop in several different ways. One way is extreme hot and cold temperature changes that can cause teeth to expand and contract – for example, crunching teeth with ice. Over time, your teeth can develop tiny cracks, which allow sensation to be transmitted to the nerve of your tooth, causing discomfort and pain. This painful reaction – referred to as “cracked tooth syndrome” – can be initiated by hot and cold, and also by biting pressure. Most of these fracture lines can’t be easily seen. But, whether or not a fracture is found, sensitivity to pressure and cold usually indicates a problem.
When teeth are sensitive along the gumline and you experience discomfort only when brushing your teeth, this may indicate an exposed area of dentin. Dentin is the protein-rich layer under the enamel – a tooth’s in-built shock absorber. Because tooth enamel is thinner along the gumline, it can be worn away by abrasion from hard-bristled toothbrushes or aggressive brushing. To prevent or reduce the wearing of dentin, try using a soft toothbrush without forceful scrubbing or switch to an electric toothbrush.
Additionally, to reduce sensitivity, use desensitising toothpaste or have the dentist apply a desensitising bond resin to your teeth. You can prevent aggravating the sensitivity further by avoiding hot or cold foods and drinks.
If the sensitivity is severe and remains for a period of time, see your dentist, as other treatment might be necessary.
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