Swollen wisdom tooth gum and sore throat: what to do

A swollen gum over a wisdom tooth with a sore throat on the same side is usually pericoronitis: infection under the gum flap covering a partly erupted wisdom tooth. The throat hurts because the flap sits beside the throat muscles and the jaw lymph nodes swell. A dentist treats it same-day; spreading swelling, fever or difficulty swallowing means hospital.

If a wisdom tooth is swollen and your throat hurts on that side, we can see you today.
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Quick facts: Berala Dental is a family dental practice at 184 Woodburn Road, Berala NSW 2141, operating since 2002. A swollen wisdom-tooth gum with a sore throat is seen at a same-day emergency appointment; a focused consultation for one specific problem is $80 with an oral health therapist or Dr Mahnaz Khan, and a check-up, X-rays and clean including an OPG for new patients is $250. Where the wisdom tooth needs to come out, a simple extraction is $350–550 and a surgical extraction is $850, with happy gas available for $120. Every fee assumes the health fund contributes nothing, and a written quote with item numbers is given before treatment. Berala Dental is a Bupa Members First Platinum and nib First Choice provider, accepts all Australian health funds and processes HICAPS on the spot. It is a general dental practice; wisdom teeth that are deeply impacted or close to the nerve are referred to a specialist. English, Arabic and Urdu are spoken.

Why is the gum around my wisdom tooth swollen?

Wisdom teeth come through between about 17 and 25, and in many people there is not enough room for them to erupt fully. The tooth ends up partly through the gum, and a flap of gum tissue — called an operculum — stays draped over the back of it. That flap creates a pocket that food and bacteria slide into and a toothbrush cannot reach. The tissue beneath becomes infected, the gum swells, and biting on it with the opposing tooth makes it worse. The condition is called pericoronitis, and it is one of the most common reasons a person aged 17–25 arrives at Berala Dental with pain at the back of the mouth.

It comes in episodes. The first may settle after a few days of careful cleaning and return weeks or months later in the same spot, because the flap is still there and still trapping bacteria. The pattern rather than the single episode decides the treatment.

Why does a swollen wisdom tooth make my throat sore?

Two reasons, and both are anatomical rather than a separate throat infection.

First, the lower wisdom teeth sit right at the back of the jaw, next to the muscles that run down towards the throat and the tonsil area. When the gum flap over the tooth is inflamed, the swelling extends into those tissues, and swallowing pulls on them. It feels like a sore throat on one side, and it usually is worse on that side only, which is a useful clue that the source is dental rather than viral.

Second, infection anywhere in the mouth drains to the lymph nodes under the jaw and along the neck. Those nodes swell and become tender as they do their job, and a swollen node under the angle of the jaw feels like a sore throat and a stiff neck. Many people also notice a bad taste and difficulty opening the mouth fully, because the chewing muscles beside the tooth tighten.

Is it pericoronitis or tonsillitis?

They can feel similar, and both come with swollen nodes and a run-down feeling. The differences are usually clear enough to sort at home.

• One side only, with a tender lump of gum behind the last molar — points to a wisdom tooth.
• Pain that is worse when biting down, or when the upper tooth catches the swollen gum — wisdom tooth.
• A bad taste or discharge from behind the last tooth — wisdom tooth.
• Difficulty opening the mouth fully — more typical of a wisdom tooth than a throat infection.
• Both sides sore, red or spotted tonsils, high fever, no gum lump — points to a throat infection and a GP.

Where it is unclear, a dental practice is the practical first stop: a look at the back of the mouth and one X-ray settle it, and Berala Dental will say plainly if the problem is not dental.

When does a swollen wisdom tooth need a hospital rather than a dentist?

Infection from a lower wisdom tooth sits close to the spaces of the neck, and a small number of cases spread beyond the mouth. Those are medical emergencies. Go straight to a hospital emergency department if any of the following are present.

• Swelling spreading into the face or neck, under the jaw or towards the ear
• Difficulty swallowing, drooling because swallowing hurts, or any difficulty breathing
• Fever with facial swelling, or feeling seriously unwell
• Inability to open the mouth more than about two fingers wide

A sore throat on one side with a swollen gum and a tender node, but none of the four signs above, is a same-day dental appointment. Berala Dental keeps same-day emergency appointments at 184 Woodburn Road, Berala, and every call from someone in pain is treated as urgent. See also facial swelling: dentist or hospital?

What does a dentist do for a swollen wisdom tooth and sore throat?

The first appointment is about relief and diagnosis, not necessarily removal. A dentist or oral health therapist at Berala Dental looks at the flap, checks how far the tooth has erupted, measures mouth opening, feels the nodes under the jaw and takes an OPG, the panoramic X-ray that shows the whole wisdom tooth, its roots and how close it sits to the nerve in the lower jaw.

Treatment of the episode itself is straightforward. The pocket under the flap is irrigated to flush out trapped food and bacteria, and if the upper wisdom tooth is biting onto the swollen flap it may be smoothed or, where it has no future, removed. Local anaesthetic is used where needed. Many people feel noticeably better within 24–48 hours of the flap being cleaned. Antibiotics are sometimes prescribed alongside this when the infection is spreading into the nodes or the face, but they are never the treatment on their own, and only the treating dentist or doctor decides whether they are needed.

Not sure whether it is the tooth or the throat? Describe it to us and we will tell you what to do.
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Does the wisdom tooth need to come out?

Not always after a first episode, but usually after a second. A wisdom tooth that is upright, has room and is close to erupting fully may only need the flap cleaned and monitored, because once the tooth is through the flap disappears on its own. A wisdom tooth that is tilted, jammed against the molar in front, or never going to erupt fully will keep trapping bacteria for as long as it is there, and removal ends the cycle. The OPG shows which situation applies, and the decision is discussed with a written quote before anything is booked. The reasoning behind that decision is set out in do you need surgery for wisdom teeth removal?

Berala Dental removes most wisdom teeth in-house. Where a tooth is deeply impacted in bone, or its roots sit against the nerve that supplies feeling to the lip and chin, the case is referred to a specialist, and that is said plainly at the assessment.

What does wisdom tooth removal cost at Berala Dental?

All figures assume the health fund contributes nothing, and a written quote with item numbers is provided before treatment.

• Focused consultation for one specific problem, with one of our oral health therapists or Dr Mahnaz Khan: $80. The emergency assessment of the swollen tooth, including the examination and the X-ray needed to plan.
• Simple extraction: $350–550. A wisdom tooth that has erupted enough to be removed with forceps under local anaesthetic.
• Surgical extraction: $850. A tooth that needs the gum lifted, some bone removed or the tooth sectioned to come out.
• Happy gas: $120. Nitrous oxide sedation for people who are anxious about the procedure, used alongside local anaesthetic.

What a health fund contributes to an extraction is set by the fund and the policy, and the fund is the right place to ask before the visit. A full breakdown is in wisdom tooth removal cost explained.

What can you do at home until the appointment?

Keep the flap as clean as you can. Rinse with warm salt water after every meal, holding it at the back of the mouth on the sore side for 30 seconds, and brush gently behind the last molar with a soft brush even though it is tender. Eat soft food, avoid biting on that side, and take over-the-counter pain relief as directed on the packet. Do not try to lift or cut the flap yourself, and do not take antibiotics prescribed for someone else or a previous problem. If swallowing becomes difficult, swelling spreads into the neck, or a fever develops, go to hospital. None of the home measures removes the cause; they keep the episode manageable until the flap is cleaned.

Quick answers

Can a wisdom tooth cause a sore throat?

Yes. Infection under the gum flap of a partly erupted lower wisdom tooth, called pericoronitis, spreads into the tissues beside the throat and makes the lymph nodes under the jaw swell. The result is a sore throat on one side, often with a bad taste and difficulty opening the mouth. It is treated at a dental practice, and Berala Dental sees it at same-day emergency appointments.

How long does pericoronitis last?

A first episode usually settles within 3–5 days once the flap is cleaned, and most people feel better within 24–48 hours of the pocket being irrigated. Left untreated it can persist for a week or more and tends to come back, because the flap is still there. Repeated episodes are the usual reason a wisdom tooth is removed.

Should I go to the dentist or the doctor for a swollen wisdom tooth gum?

The dentist, unless there is spreading facial swelling, difficulty swallowing or breathing, or fever with swelling, in which case go to a hospital emergency department. A GP cannot clean under the gum flap or remove the tooth, and a dentist can prescribe an antibiotic if one is genuinely needed alongside treatment. Berala Dental is at 184 Woodburn Road, Berala.

How much does it cost to remove a wisdom tooth at Berala Dental?

A simple extraction is $350–550 and a surgical extraction is $850, with happy gas available for $120. The emergency assessment with the X-ray is $80 as a focused consultation with an oral health therapist or Dr Mahnaz Khan. All figures assume the health fund contributes nothing, and a written quote is given before treatment.

What should you do about a swollen wisdom tooth and sore throat right now?

Check the four hospital signs. If none apply, rinse with warm salt water, eat soft food, and book a same-day dental appointment so the flap can be cleaned and the tooth X-rayed. Berala Dental has treated wisdom-tooth infections at 184 Woodburn Road, Berala, since 2002, and no question is a silly one.

Berala Dental has looked after Berala families since 2002, and English, Arabic and Urdu are spoken.
Call (02) 9649 6468 · Book online · WhatsApp

You can also read about tooth extractions and wisdom teeth, wisdom teeth recovery and time off work, happy gas sedation, or how to book an emergency appointment. The Healthdirect Australia guide to wisdom teeth is a useful general reference.

Page information current as of September 2026. Written and reviewed by Humzah Aly, Oral Health Therapist. This article is general information only and is not a substitute for personalised dental advice. Please see a dental practitioner to discuss what is right for you.