Even with all the advances in modern dentistry, it is still necessary for a dentist to pull a tooth from time to time.
There may be several reasons why extraction is the way to go:
• The tooth has decayed to the point where the pulp of the tooth has become infected. Although the situation may be resolved by a root canal procedure, if that doesn’t work the only way to solve the problem is to pull the tooth.
• Gum disease can weaken the gum tissue and result in loosened teeth. When this occurs, your dentist may need to pull the affected teeth.
• Your teeth are too big for your mouth, which results in a “crowded mouth.” If there’s not sufficient room in your mouth for all your teeth, your dentist may have to pull one in order to make room. This is particularly common in patients that are being prepared for braces.
• If you have a weakened immune system – for example, from a disease or some other physical condition – your dentist might recommend pulling a tooth if there is a risk of infection. In this instance, an infection could be very serious for the patient, so it would be better to extract a tooth rather than risk the consequences of infection.
Although having a tooth pulled is never a particularly pleasant experience, modern dentistry has advanced to the point where the patient usually feels little or no discomfort during the procedure itself. Afterward, patients are typically given painkillers to help during the recovery process. Your dentist will give you instructions on how best to take care of your mouth to ensure the speediest recovery possible.
Source: WebMD, http://www.webmd.com/oral-health/guide/pulling-a-tooth-tooth-extraction