Your tooth may ache for any number of reasons. Tooth decay-caused by acids from an accumulation of bacteria-laden plaque on your teeth and beneath your gums-is number one.
Nursing your aching toothe
Give it a chilly reception
An ice pack applied to the outside of your cheek might numb the region enough to give you some relief. But sometimes people with toothaches are so temperature-sensitive, it's better just to leave the tooth alone.
Walk away tooth pain
Exercise or do whatever distracts you. Twenty-five minutes or so of brisk walking, cycling or some other aerobic.