Six months is a habit rather than a rule. Australian Dental Association patient information says most dentists recommend a check-up every 6 to 12 months, but that adults at very low risk may only need one every one to two years, while people at high risk of decay or gum disease may need to be seen every three months. X-rays follow their own timetable and are taken when the information is likely to change what your dentist does.
The evidence behind recall intervals
A 2020 Cochrane review (Fee and colleagues) looked at trials comparing different gaps between dental check-ups. In one large UK trial of adults who already attended regularly, there was little to no difference in decay, bleeding gums or quality of life over four years between six-monthly visits and visits timed to each person's risk. Evidence comparing other intervals was less certain, and the trials involved people who already saw a dentist regularly.
In the UK, the National Institute for Health and Care Excellence (NICE) recommends that the gap be set for each patient after assessing their disease levels and risk, with a range of 3 to 24 months for adults and 3 to 12 months for under-18s. Both point the same way: your interval should reflect your mouth, not a calendar.
What pushes the interval shorter
Your dentist or OHT weighs several things when suggesting your next visit. A history of decay or gum disease is the strongest signal. The ADA also lists smoking, diabetes and some medicines as risk factors. Frequent sugary food or drinks raise the risk of decay, and a dry mouth removes some of the protection saliva normally gives. A mouth that has been stable and healthy for some time may justify a longer gap.
Smoking deserves a special mention, as our guide to smoking and oral health explains, and diet matters too, covered in the best and worst foods and drinks for teeth. Regular professional cleaning also has a practical purpose, because hardened tartar cannot be brushed away at home, as our plaque versus tartar guide describes.
Children usually need at least yearly visits
According to the ADA, children at low risk should see a dentist at least once a year, and children at higher risk of decay may need visits every three to six months until their risk settles. Decay can progress quickly in baby teeth, and regular reviews also allow early attention to bite and habits. Our guide to a child's first dental visit covers when to start.
X-rays are decided case by case
There is no set number of months between dental X-rays. They are taken when the dentist expects them to show something an examination cannot, such as decay between the teeth, problems under existing fillings or changes in the bone around the teeth. Someone with a stable mouth and no recent decay may go a long time between X-rays. Someone with a history of decay between the teeth or active gum disease may need them more often, because those problems are hard to see by eye alone.
ARPANSA, Australia's radiation safety agency, notes that the radiation from dental imaging is typically very low and the risk of harm minimal, although every X-ray involves a small dose. That is why the aim is always useful information with exposure kept as low as reasonably achievable. Our practice uses an Orthophos 3D X-ray unit for OPG and 3D scans. In line with current guidance that routine shielding is not needed for dental X-rays, we do not use lead aprons or thyroid collars. For children specifically, our guide to kids and dental X-ray safety explains the extra care taken.
Questions patients ask about check-ups
Do I really need to go every six months?
Not always. Six months is a common default, but your dentist may suggest more or less often depending on your risk. Some healthy adults are seen less frequently.
My teeth feel fine. Can I skip a visit?
Many dental problems, including early decay and gum disease, cause no pain until they are well advanced, so feeling fine is not a reliable guide. Your dentist can suggest a gap that is safe for you.
What happens at a check-up?
The dentist examines your teeth, gums and the soft tissues of the mouth, checks for decay and gum disease, takes X-rays if they are needed, and often a clean is done at the same visit. It is also a good time to raise any concerns. You will usually receive a written treatment plan, often by email, if anything needs attention.
Setting an interval that suits you
How often you need a check-up and X-rays is a personal decision based on your risk, and it can change over time. If you would like a schedule that fits your mouth, you can book a check-up at our Melrose Park practice, and current offers are on the current deals page.
Sources
- Australian Dental Association: How often should you see a dentist?
- Fee PA et al. Recall intervals for oral health in primary care patients. Cochrane Database of Systematic Reviews, 2020
- NICE CG19: Dental checks, intervals between oral health reviews
- ARPANSA: New radiation resource for dental patients
This article is general information and not a substitute for personalised advice from your dentist.
