Toothaches occur from inflammation of the central portion of the tooth called pulp. The pulp contains nerve endings that are very sensitive to pain. Inflammation to the pulp, or pulpitis, can be caused by anything that has contact with the tooth. Common causes of tooth pain are the following:
1.Dental cavities/tooth decay
2.Temperature sensitivity — hot or cold liquids or foods*.
Hot or cold air
3.Teeth grinding or clenching
4.Orthodontic movement — braces
6.Impacted wisdom tooth
7.After a crown, a tooth will sometimes become sensitive after a crown is prepared or cemented.
10.Gum recession — exposure of thetooth root that was covered by gum or bone
12.Damaged or broken fillings or crowns
13.Cold sore or canker sore