An abscess is an infection in or around your tooth.  An infected tooth will have a pocket of pus form around its root.  Most of the time, this will result in a more widespread pulsating pain that may make it difficult to pinpoint the exact location the pain is coming from.  Tooth abscess pain often gets worse at night when lying down. This can also be accompanied by some swelling of the gum or a “pimple-like” lesion.  If the abscess is able to drain the level of pain may decrease but you may notice a foul taste in the mouth and sometimes even a bad odor. Read the full article

Teeth grinding and clenching are very common reasons for tooth pain. People who grind their teeth generally do so while they’re sleeping or during stressful situations. This can result in sore jaw, headaches, neck and related muscle pain, worn enamel, and even cracked or chipped teeth, all of which can be very painful. Damaged/failing filling A broken filling can expose sensitive parts of your tooth. This can result in a pain that is anything from a dull ache to a sharp, piercing sensation. If you have a damaged filling, it should be fixed before the vulnerable parts of your tooth suffer further damage or decay. Gum Disease Gum disease often causes red, swollen and bleeding gums. The inflammation can also cause a dull toothache. Temperature sensitivity Temperature sensitivity is quite common.  It typically is a sharp tooth pain when eating or drinking something cold or hot. Usually this sensation lasts for only a few seconds. Most of the time we experience temperature sensitivity when we have worn enamel or root exposure. Read the full article