The socket is the hole in the bone where the tooth has been removed. After a tooth is pulled, a blood clot forms in the socket to protect the bone and nerves underneath. Sometimes that clot can become dislodged or dissolve a couple of days after the extraction. That leaves the bone and nerve exposed to air, food, fluid and anything else that enters the mouth. This can lead to infection and severe pain that can last for five or six days.
Some people may be more likely to get dry socket after having a tooth extracted. This includes people who:
Rinsing and spitting a lot or drinking through a straw after having a tooth extracted also can increase your risk of getting dry socket.