Wisdom teeth have a bad reputation, and not all of it is deserved. Plenty of people keep theirs for life without a single problem.
That’s worth saying clearly, because the useful question isn’t whether you have wisdom teeth it’s whether yours are causing damage. Current clinical guidance is against removing wisdom teeth that are healthy, fully erupted and symptom-free. Surgery has risks, and there’s no benefit in taking out a tooth that isn’t doing harm.
If you’re experiencing pain or swelling at the back of your mouth, it’s helpful to understand wisdom tooth pain, when a tooth extraction may be recommended, and how CBCT imaging helps dentists assess the position of impacted wisdom teeth before treatment.
So here’s what actually indicates removal.
1. Recurring Pain or Pressure at the Back of the Jaw
Occasional soreness while a wisdom tooth erupts can be normal. Pain that keeps returning is not.
The pattern matters more than the intensity. A dull ache behind your last molar that flares every few weeks, settles, then returns usually means the tooth is partially through and repeatedly becoming inflamed. That cycle rarely resolves on its own.
2. A Swollen Gum Flap Over the Tooth
When a wisdom tooth only partially erupts, a flap of gum tissue often remains over part of it. Food and bacteria collect underneath, where no toothbrush reaches, and the tissue becomes infected. This is called pericoronitis.
Look for gum at the back that’s red, swollen and tender, sometimes with a bad taste or discharge. A first episode can often be settled with cleaning and antibiotics. Repeated episodes are one of the clearest indications for removal, because the anatomy causing it doesn’t change.
3. Food Constantly Trapping and Decay Behind It
If food packs into the same spot behind your last molar daily, the gap is hard to clean and decay follows.
The serious part is what happens next door. An angled wisdom tooth pressing against the molar in front creates a trap right where the two teeth meet a surface you can’t reach with brush or floss. Decay there often goes unnoticed until it’s deep.
This is the sign patients most often underestimate. You can lose a perfectly healthy second molar to a wisdom tooth you were tolerating.
4. Difficulty Opening Your Mouth, Swelling or Fever
Treat this as urgent rather than a wait-and-see.
If you can’t open your mouth fully, your cheek or jaw is visibly swollen, the glands under your jaw are tender, or you have a fever, infection has spread beyond the gum into surrounding tissue. Get seen the same day spreading infections in the lower jaw can affect swallowing and breathing, and are treated as emergencies.
Call us on 800 22 32 33 if this describes you.
5. Damage Visible on a Scan
Some indications produce no symptoms at all, which is why imaging matters even when nothing hurts.
An X-ray or OPG can show a wisdom tooth angled into its neighbour’s root and eroding it, a cyst forming around an unerupted tooth, or an impaction positioned so that it cannot erupt usefully. Any of these can justify removal before symptoms appear.
Our clinic offers OPG and CBCT scanning on site, which also maps how close the roots sit to the nerve running through the lower jaw the single most important factor in planning a safe extraction.
When Removal Isn’t the Answer
A few things commonly blamed on wisdom teeth don’t hold up.
Crowding of the front teeth is often blamed on wisdom teeth pushing forward. The evidence doesn’t support this well front teeth tend to crowd with age regardless, and removing wisdom teeth to prevent it isn’t recommended.
Fully erupted, healthy wisdom teeth that you can clean properly and that bite normally against the tooth above should generally be left alone and monitored.
If you’re unsure which category you’re in, an examination and a scan will tell you in one visit and “leave it and review” is a legitimate outcome.
Book an assessment at our Motor City clinic, or call 800 22 32 33. If you’d like to know what the procedure itself involves, our guide to tooth extraction what to expect walks through it.
Frequently Asked Questions
Do all wisdom teeth need to be removed?
No. Wisdom teeth that are fully erupted, healthy, cleanable and biting normally are usually best left in place and monitored. Removal is indicated when there’s infection, decay, damage to the adjacent tooth, or a problem visible on a scan.
How do I know if my wisdom tooth is impacted?
Impaction can only be confirmed with imaging. Common signs include partial eruption, recurring gum swelling at the back, food trapping and persistent pressure but some impacted teeth cause no symptoms at all.
Is wisdom tooth removal painful?
The procedure is done under local anaesthetic, so you’ll feel pressure rather than pain. Soreness and swelling for a few days afterwards are normal and manageable with prescribed pain relief.
Can I wait if it only hurts sometimes?
Intermittent pain usually means recurring inflammation rather than a resolving problem. It’s worth having assessed while it’s quiet treatment is simpler before an acute flare-up, not during one.
