The short answer

Dry socket is what happens when the clot that formed in an extraction site is lost before the gum has healed over it, leaving bone exposed. It shows up two to five days after the extraction as pain that had been improving and then sharply returned.

It is not dangerous and it is not an infection. It is treated in a short visit, and it does not resolve comfortably on its own.

How it differs from normal healing

Ordinary recovery has a direction. Day one is sore, day two is often the worst for swelling, and from day three the pain steadily eases. If yours is doing that, it is doing what it should.

Dry socket reverses that direction. The pain comes back on day three or four, is deeper and more constant than before, and radiates along the jaw toward the ear on the same side. Over-the-counter painkillers take the edge off and no more.

Two other signs usually arrive with it: a persistent bad taste or smell, and a socket that looks empty rather than filled with a dark clot. You may see pale bone at the base.

Why it happens

The clot is the whole structure of early healing, which is why aftercare spends its first day on protecting it. Lose it and the bone and nerve endings underneath are exposed to air, food, and everything else in the mouth.

Smoking is the largest single risk factor, through the suction and the chemistry both. Straws do the same mechanically. Vigorous rinsing or spitting in the first day can wash a young clot away. A difficult surgical extraction leaves a larger socket that is harder to keep filled.

None of that means you did something wrong. Some people get dry socket having followed every instruction carefully, and it is not a sign that the extraction went badly.

What treatment involves

The socket is rinsed clean and a medicated dressing is placed into it. Most people feel the difference within an hour, and often within minutes.

The dressing is usually changed once or twice over the following days while the gum grows over. There is no course of antibiotics, because there is no infection to treat. Ordinary healing resumes from there and finishes on the normal timetable.

The appointment is short. It is the kind of thing offices keep same-day room for, because the pain is disproportionate to how quickly it can be fixed.

Call now if

Call your dentist today if pain has worsened after day three instead of improving, if a bad taste has appeared alongside it, or if you can see an empty socket. That combination is dry socket and it will not get better while you wait.

Call today too if bleeding restarts and will not settle under twenty minutes of firm pressure on fresh gauze, if you cannot open your mouth properly, or if numbness in your lip or chin is still there a day after the extraction.

When it is something worse

Dry socket does not cause a fever and it does not cause the face to swell. Those belong to a spreading infection, which is a different problem on a different timescale.

A tooth that is causing this much pain for another reason is an emergency in its own right.

Go to an emergency room tonight, not a dental office, if swelling has reached your eye or your neck, if you have a fever alongside the pain, or if swallowing or breathing has become difficult. A dental infection that spreads into the floor of the mouth or the neck is a medical emergency, and an emergency room can begin treating it immediately even though it cannot deal with the tooth.