The need to remove wisdom teeth arises from the lack of space in the jaw for their eruption. This phenomenon leads them to be trapped in the jaw and be in contact with the nerves and arteries there. The relationship between the roots of the wisdom and the nerves can complicate the wisdom tooth extraction. Since if the nerves or arteries are wrapped around the roots they can be damaged during an extraction, leading to a partial or full loss of sensation in the lower lip. One of the solutions to prevent the possibility of damage to the nerves, is to remove only part of the wisdom tooth and leave the rest in the jaw, this procedure is termed coronectomy .
Even if it may seem to be, an incomplete treatment, research has shown that for the patients it had been done, it turned out to be very good. In the research, the complications following full removal of the wisdom teeth and coronectomy in difficult conditions were compared, it has been shown that those patients who had the coronectomy, had fewer complications.