Cracks can make your tooth feel as if it is exploding, as they expose the dentin and nerves to the air and anything else you put in your mouth. If you don t get them fixed, they will get worse, possibly leading to your tooth breaking off at the gums. Pulp irritation is another cause of toothaches, as it occurs after dental treatment. Although you may not realize it, cavities are a very serious matter that can quickly spread to something even more serious. If you visit your dentist on a regular basis, he will check for cavities. Without visiting the dentist, it is impossible to tell whether or not you have a cavity. Most cavities develop below the gums, and you won t be able to see them. If he is going to pull or cut out your teeth, you ll have the option of using local anaesthesia or going with an IV sedation. An IV sedation is the preferred way to have wisdom teeth extracted, as you ll be so relaxed you won t know what is going on. If you decide to just use local anaesthesia, which is numbing, you ll be fully aware of the procedure. Decay is the main reason for pulp in the tooth dying. Once the decay has reached the pulp, it will keep eating away until the pulp has died. Once it dies, the toxins from the decay will be released into the root tip and make it s way into the jawbone. If not taken care of properly, the jawbone can become infected, which can lead to death in rare cases. Your dentist will prescribe you some pain medicine, which you should use as soon as you arrive home. If you are going to use IV sedation, you ll need to someone to accompany you, as you won t be able to drive home. After the removal of your wisdom teeth, your dentist will go over what you need to do to ensure the proper healing of your gums and mouth. Once the infection has started to spread, your jawbone may start to dissolve as it makes room for the swelling in the area that has been infected. Once the bone starts to dissolve, the pressure will be greatly reduced, although the infection will still be there. Even though you will get relief, the infection will get worse - and the pain will always come back.