If your dentist has told you a wisdom tooth can stay for now, that is a recognised plan rather than a decision put off. Plenty of adults keep one or more wisdom teeth for decades with no trouble. What makes monitoring safe is that it is active: the tooth is looked at again at set intervals, and the plan changes if the findings change.
This post covers that monitoring decision. If removal has already been recommended, the questions about anaesthetic, timing and recovery are covered in other guides.
The research does not support removing every symptom-free wisdom tooth
The best summary of the evidence is a Cochrane review by Ghaeminia and colleagues, updated in 2020. The authors looked for studies comparing removal with retention of impacted wisdom teeth that were causing no symptoms and showed no disease. They found only two eligible studies, both with a high or serious risk of bias, and concluded there was not enough evidence to say whether these teeth should be taken out or kept.
Two findings from that review are useful to know. Very low certainty evidence suggested that keeping an impacted wisdom tooth may be linked with a higher long-term risk of gum and bone disease around the molar in front of it. And one small trial found no clinically meaningful effect of removal on crowding of the dental arch in teenagers who had finished orthodontic treatment. The review's practical advice was shared decision making, and, where teeth are kept, clinical checks at regular intervals.
Surgery also has its own risks and recovery, and those tend to rise with age. That is why the choice is made tooth by tooth and person by person, not by rule.
Five things checked at a wisdom tooth review
A review is more than seeing whether the tooth has come through. The dentist is weighing several findings together.
How the tooth sits
An upright tooth that has erupted into a normal biting position behaves very differently from one tipped forward against the molar in front. The angle affects how well the area can be cleaned and whether the tooth is likely to cause problems. Because teeth can still move in early adulthood, the position is compared with earlier records at each visit.
Decay on the wisdom tooth and its neighbour
The back surface of the second molar, right where a tilted wisdom tooth presses against it, is hard to reach with a brush. Decay there can develop quietly. If a cavity forms on the second molar that cannot be repaired properly while the wisdom tooth is in the way, the balance often tips towards removal.
The gum flap
A partly erupted wisdom tooth often has a flap of gum over part of its biting surface. Food and bacteria collect underneath, which can lead to pericoronitis, an infection of the gum around the crown. The dentist looks for swelling, tenderness or signs of past flare-ups. One mild episode may be managed with cleaning and better home care; repeated episodes are a different story.
How easy it is to keep clean
Some wisdom teeth are easy to brush around. Others sit so far back that even a careful patient struggles. This is judged from what the dentist or OHT sees, such as plaque build-up and inflamed gum around the tooth, rather than assumed from an X-ray alone.
Changes on X-rays
Imaging shows what cannot be seen in the mouth: the roots, the bone around an unerupted tooth, and the space around its crown. A widening space around the crown of a buried tooth can be an early sign of a cyst, which is one reason imaging is repeated at intervals for teeth that are being kept. Our guide to wisdom tooth cysts explains what that finding means.
How often a monitored tooth is looked at
For most people, a wisdom tooth on a monitoring plan is checked at each routine examination, which for many patients is every 6 to 12 months. X-rays are not taken every time. Your dentist will suggest how often imaging is worthwhile based on the position of the tooth, your age, your decay and gum risk, and what earlier images showed.
Write down, or ask for, what the plan is. A good monitoring plan has a review date and a short list of signs that should bring you back sooner.
Signs that bring the removal conversation forward
No single finding makes removal automatic, but these are the ones that usually lead to a more detailed discussion:
- pericoronitis that keeps coming back or is getting worse
- decay in the wisdom tooth, or in the molar in front, that cannot be treated well while the wisdom tooth stays
- gum and bone loss around the second molar that does not settle with better cleaning
- a cyst or other change in the bone around an unerupted tooth
- a change in position that puts the neighbouring tooth at risk
Between visits, book in sooner if you notice swelling around a back tooth, pain when biting, a bad taste, difficulty opening your mouth, or a swollen face. Facial swelling with fever or trouble swallowing needs urgent care.
When removal is chosen, nerve position is part of the plan
If a lower wisdom tooth does need treatment and its roots sit very close to the nerve, a 3D scan helps the dentist plan. For suitable cases, Lumi offers coronectomy, where the crown is removed and the roots are left in place to lower the risk to the nerve. Some complex cases are referred to an oral surgeon. The guide to wisdom teeth removal and anaesthetic options explains what happens next if extraction becomes the right choice.
Questions patients ask about keeping a wisdom tooth
Will a tooth that has been fine for years stay fine?
Often, but not always. Gum health, decay risk and even tooth position can change slowly over time, which is why a single assessment in your twenties is not the end of the matter.
Is pain the only warning sign?
No. Early decay on the neighbouring molar, gum pockets and cysts can all develop without pain. Regular reviews pick these up before symptoms do.
Do wisdom teeth push the front teeth out of line?
The link is weaker than many people think. The Cochrane review found no clinically significant effect of removing wisdom teeth on arch crowding in the one trial that tested it, although that trial was small and at high risk of bias.
Does monitoring mean I will never need it out?
Not necessarily. It means monitoring is the sensible plan on current findings. Removal stays an option if things change.
If you have a wisdom tooth that is being watched, or you are not sure when it was last checked, we can examine it, take imaging if it is needed and agree a review date with you. You will usually receive a written treatment plan, often by email. New patient offers are listed on our current deals page. If the dental chair makes you anxious, our article on managing dental anxiety may help, and a routine scale and clean is a good time to have hard-to-reach back teeth looked at.
Sources
- Ghaeminia H, Nienhuijs ME, Toedtling V, et al. Surgical removal versus retention for the management of asymptomatic disease-free impacted wisdom teeth. Cochrane Database of Systematic Reviews, 2020.
- Better Health Channel (Victorian Department of Health). Wisdom teeth.
