Impacted wisdom teeth are third molars located at the back of the mouth that do not have enough room to emerge or develop normally. They are the last adult teeth to come into the mouth and most people have four wisdom teeth at the back of the mouth, two on the top and two on the bottom. Impacted wisdom teeth can cause pain, damage to other teeth, and other dental problems. In some cases, impacted wisdom teeth may cause no apparent or immediate problems, but because they are hard to clean, they may be more vulnerable to tooth decay and gum disease than other teeth. Impacted wisdom teeth that cause pain or other dental complications are usually removed. Some dentists and oral surgeons also recommend removing impacted wisdom teeth that do not cause symptoms to prevent future problems. Impacted wisdom teeth dont always cause symptoms, but when they do, some of the signs and symptoms include pain or swelling of the jaw or face, red, swollen or bleeding gums, bad taste in the mouth, bad breath, and difficulty opening the mouth all the way. If you experience any of these symptoms, you should see your dentist to determine if they are associated with an impacted wisdom tooth.