The removal of tooth from the mouth, The most common reason for extracting a tooth is : damaged and decayed or broken tooth which cannot be repaired and restored, extra teeth, people getting braces may need teeth extracted, wisdom teeth if they are decayed or cause pain may not have enough room to come in completely these teeth often get stuck in the jaw (impacted) and do not come in, people receiving some medical treatment like radiation or cancer drugs and people receiving organ transplant.