If you ve had a tooth recently knocked out, the first thing you should do is look for that tooth. When you ve found the tooth, gently scrub it to get rid of any dirt or debris. Once you have cleaned it, you should place it back in your mouth between the cheek and gums. Whatever you do, you should never try to put it back in the socket. This is very common, as many people inherit tooth problems that have been passed down from generation to generation. Adults who suffer from a dry mouth are more at risk for cavities, as they have a lack of saliva in their mouth. Dry mouth is very common, and is normally the result of medications, illness, and radiation treatment. 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. No matter how well your filling or crown was done, the materials that were used to fix the tooth can end up causing pain later on down the road. Vertical apical root fractures occur with the tip of the root, and can cause you severe to intense pain, even if you ve had the nerve removed with a root canal. Even though the nerve may not be present, vertical apical root fractures cause a lot of pain, which occurs in the tooth. Normally, vertical apical fractures will cause you more pain than any other type of fracture. 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. To fix this problem, the dentist will need to perform a root canal. It works through your veins, as the anaesthesia is inserted into your arm through a vein. If you have chosen either laughing gas or an IV sedation, your dentist will administer either of the two before he gives you shots or goes any further. Once the medicine has taken effect, you normally won t feel anything or remember it.