Wisdom teeth or tooth ( also called Third molars ), are the last teeth to grow in the mouth, usually they start erupting at late teens or early twenties.
When a wisdom tooth has no place to grow in the mouth, it will only emerges partially, than a flap of gum, called Operculum, may form a pocket over the tooth which makes the tooth cleaning very hard.
If a pieces of food get inside that pocket this might lead to An infection, called pericoronitis , and this will be associated with swelling of that gum, sever pain and may be a mouth opening restriction. If the wisdom tooth was not taken out, this infection will be repeated for couple of times.
So, wisdom teeth that potentially causing problems, like infections, need to be removed. Extractions can range from a single tooth, or removing all the four wisdom teeth at once based on the preference of the doctor and/or the patient.
The surgery can performed under normal local anesthetic to numb the areas where the teeth will be extracted. Others if you prefer to take all of them in one go you have to go under a general anesthetic.
The gum tissue around the wisdom tooth is cut open to reveal the tooth. The tooth is loosened by gripping it tightly and wiggling it back and forth until it can be lifted out of the gums. Sometimes a tooth may be impacted so tightly that it cannot be simply lifted out of the gums. In cases like this the tooth will be broken up into pieces first before being removed. Depending on the incision and extraction site, sutures may be needed to close the area. Soluble sutures are the best option, which will dissolve on their own.
Also the inability of wisdom tooth to grow means it is Inclined in the bony jaw and by this it might affect the neighbour tooth leading to Erosion Cavity.
After the surgery you will need to rest. You need to be driven home by a friend or family member because of the anesthesia. You can expect for the extraction site to bleed for a little while after the surgery. Gauze will be applied at the completion of the surgery, and you will need to change it when it becomes soaked. If bleeding continues for longer than 24 hours you should call your dentist. Rest when you return home, but do not lie flat. This could prolong the bleeding. Prop your head up on a pillow when lying down. Your dentist will prescribe you pain medication, so if you become sore take as directed. You can also use an ice pack for the pain. Your dentist might also provide you with a cleaning solution to clean the extraction site.