Wisdom tooth pain: causes, what to do and when it needs removal
Wisdom teeth are the last molars at the back of the mouth, usually coming through between the late teens and mid-twenties. Many people have no trouble with them, but when there is not enough room they can cause pain, swelling and repeated infection. This guide explains why it happens, what you can safely do at home, and how we decide whether a wisdom tooth should be removed or simply watched.
Written by Dr. S. Barath Kumar, MDS · Updated 2 November 2026
Why wisdom teeth hurt
The pain usually comes from one of these causes. The same ache can have different reasons, which is why an examination matters.
- Impaction: the tooth is stuck under the gum or bone, or growing at an angle and pushing against the tooth in front.
- Pericoronitis: a flap of gum over a partly erupted tooth traps food and bacteria, so the gum becomes swollen, sore and sometimes infected. This is the most common cause.
- Decay: wisdom teeth are hard to clean, so cavities form easily in them and in the back of the neighbouring molar.
- Gum disease and cysts: less often, a pocket of infection or a fluid-filled sac can form around a buried tooth.
Home care until you are seen
- Rinse gently with warm salt water (half a teaspoon of salt in a glass of warm water) several times a day, especially after meals.
- Brush the area carefully with a soft brush to clear trapped food, even if it is tender.
- Hold a cold pack wrapped in a cloth against your cheek for 15 minutes at a time if there is swelling.
- Take an over-the-counter pain reliever exactly as directed on the pack or by your pharmacist, if it is safe for you.
- Eat soft food and chew on the other side.
- Do not place a tablet on the gum, apply heat to a swollen face, or take leftover antibiotics.
Warning signs: get help urgently
- Swelling of the face, cheek or jaw that is increasing
- Difficulty opening your mouth fully
- Fever, pus, or a bad taste with worsening pain
- Swollen glands under the jaw
- Difficulty swallowing or breathing (go to a hospital emergency department immediately)
See also our dental emergency guide.
How we assess a wisdom tooth: examination and X-ray
Dr. S. Barath Kumar examines the gum and nearby teeth, then usually takes an X-ray. For wisdom teeth this is often an OPG, a single panoramic X-ray of the whole mouth. It shows the angle of the tooth, how deeply it sits in the bone, the shape of its roots, and how close it is to the nerve in the lower jaw and to the neighbouring molar. In a few complex cases a 3D scan (CBCT) may be advised before surgery.
When removal is usually advised
- Repeated episodes of pericoronitis or infection
- Decay in the wisdom tooth that cannot be restored, or decay it is causing in the tooth in front
- Damage to the roots or bone of the neighbouring tooth
- A cyst or other change around the tooth on the X-ray
When monitoring may be enough
- The tooth is fully erupted, in a good position and easy to clean
- A buried tooth has no symptoms and no signs of disease on the X-ray
- A single mild episode settled with cleaning and care
Teeth that are being watched are checked at regular visits, with an X-ray when needed.
What removal involves and recovery
Numbing
The area is fully numbed with local anaesthetic, so you feel pressure but not sharp pain.
Removing the tooth
An erupted tooth may come out much like any other tooth extraction. An impacted tooth may need a small opening in the gum, and sometimes the tooth is removed in parts to protect the bone.
Stitches and gauze
Dissolving stitches may be placed, and you bite on gauze to control bleeding. You go home with written aftercare instructions.
The first few days
Some soreness, swelling and stiffness of the jaw are normal and usually peak around day two or three. Soft, cool food, prescribed medicines and gentle salt-water rinses from the next day help.
Review
A short follow-up visit checks healing. Call us if pain gets worse after day three, as this can be a sign of dry socket.
For an overview of other minor procedures, see our oral surgery guide.
Common questions
Should I get my wisdom tooth removed if it hurts?
Not always. Pain from gum inflammation around a wisdom tooth can settle with cleaning and care. Removal is usually advised if problems keep coming back, the tooth is decayed beyond repair, or it is damaging the tooth next to it. An examination and X-ray help decide.
Can wisdom tooth pain go away on its own?
Mild soreness while a wisdom tooth is coming through can ease in a few days. Pain that keeps returning, or comes with swelling, a bad taste or difficulty opening your mouth, needs a dental check-up.
Will antibiotics cure a wisdom tooth infection?
Antibiotics may be prescribed by a dentist when there is spreading infection, but they do not fix the cause. If the tooth keeps trapping food and bacteria, the problem is likely to return.
How long does recovery take after wisdom tooth removal?
Most people feel tender for the first few days, with swelling at its peak around day two or three, then steady improvement. Recovery depends on how the tooth was positioned, and your dentist will explain what to expect.
Do I need an X-ray for a wisdom tooth?
Yes, usually. A wisdom tooth is often partly or fully hidden under the gum or bone. An X-ray, often a full-mouth OPG, shows its angle, its roots and how close it is to the nerve and the neighbouring tooth.
Wisdom tooth bothering you?
Message Dr S. Barath Kumar on WhatsApp or call the clinic. For a Sunday emergency, please call.
Gentle Touch Dental Clinic · U 74, New No 58, 5th Main Road, Anna Nagar, Chennai 600040 (near Tower Park). Monday–Saturday: 9:30 AM – 1:30 PM and 4:30 PM – 8:30 PM. Sunday: closed; emergency appointments on call at +91 98840 15026 or 072005 87155. Get directions.
This page is general information and not a diagnosis. Please see a dentist for advice about your own teeth.
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