What Actually Happens at a Check-Up — And Why It Costs What It Does

It is a reasonable thing to wonder. You sit down, someone looks in your mouth for a few minutes, says everything's fine, and you pay for the privilege. Compared with almost any other appointment you pay for, it can feel like very little happened.

Quite a lot happened. It's simply that most of it is invisible, and the best possible outcome of a check-up is that there is nothing to report. Here's what's actually being done, how often you genuinely need it, and where the money goes.

01The examination

Four separate checks, not one

A routine examination isn't a single glance at your teeth. It's a series of distinct assessments that happen to take place in quick succession.

The one nobody notices

The soft tissue examination is the part that most patients don't register at all. Looking at the tongue, under it, inside the cheeks, at the palate and the back of the throat, then feeling along the jaw and neck — it takes under a minute and it is a check for changes in the lining of the mouth.

Mouth cancer is uncommon, and the overwhelming majority of what we look at is entirely normal. But it is far more treatable when found early, and the early stages are typically painless — which means the person it's happening to has no reason to seek help. A dentist looking in your mouth twice a year is, for most adults, the only routine examination of that area anyone performs.

Gums get measured, not glanced at

If you've heard numbers called out during an appointment, that's the periodontal assessment — measuring the depth of the space between gum and tooth in millimetres. Shallow readings suggest healthy attachment. Deeper ones indicate the tissue holding the tooth has begun to detach, which matters because that damage doesn't reverse.

It's done with a probe rather than by eye because gum disease is frequently painless until it is advanced. The measurement finds it years before you would.

02How often you actually need to come

"Every six months" was never a clinical rule

This is the most widespread misunderstanding in dentistry, and it costs some people money while putting others at risk.

NICE guidance on the interval between oral health reviews recommends that the interval is "determined specifically for each patient and tailored to meet his or her needs, on the basis of an assessment of disease levels and risk of or from dental disease."

For adults over 18, the shortest recommended interval is three months and the longest is 24 months. For children under 18, the range is three to twelve months. Intervals are assigned in set increments and reviewed at each appointment.

So a patient with healthy gums, no decay history, who doesn't smoke, may reasonably be seen once every year or two. Someone with active gum disease, a high-sugar diet or a history of repeated decay may need to be seen every three or four months — and for that person, six-monthly is not caution, it's a gap.

If your interval has been the same for a decade regardless of what's changed in your life, that's worth a question at your next visit.

03X-rays

Why not every time

Roughly a third of each tooth's surface is hidden where it touches the tooth next to it, along with everything below the gumline. Decay starting in those areas is invisible to direct examination until it is well established. X-rays are how that gets found.

They aren't taken at every appointment because the interval is judged on individual risk, in the same way as recall. Someone with a history of decay between teeth will be imaged more often than someone with none.

04What it costs

Three things determine what you pay

Whether it's NHS or private. NHS dentistry in England is charged in bands, and the band covers everything clinically necessary within it — one payment per course of treatment rather than per item. Private care is priced per practice and per appointment. The two work quite differently, so the first useful question is which one you're having.

What's actually needed. An examination on its own sits in the lowest NHS band. Adding a filling or an extraction moves the whole course into a higher one. Nothing is charged twice.

Whether you're exempt. A number of people are entitled to free NHS dental treatment or help with the cost, on grounds including age, pregnancy and certain benefits. It's worth checking rather than assuming — plenty of people who qualify don't realise it.

Private fees work differently

What tends to differ between one private practice and the next is time: a longer appointment allows for a more detailed assessment, photographs, and a fuller discussion of options. Many practices also offer a monthly plan spreading examinations and hygienist visits across the year, which suits people who would rather not face occasional larger bills.

The honest answer to "is private better?" is that it buys time and choice rather than a different standard of care. Both are delivered by dentists registered with the General Dental Council and held to the same professional standards.

05Why leaving it is the expensive option

Problems don't stay the same size

Decay found early is usually a filling. The same decay left alone can reach the nerve, at which point it becomes root canal treatment or an extraction — and an extraction then raises the question of replacing the tooth, which is where dentistry gets genuinely costly.

Gum disease follows a similar path with a harder ending: early inflammation is usually reversible, but bone loss around a tooth is not. Nothing puts it back.

The examination is comfortably the cheapest appointment in dentistry, and its entire purpose is to keep you away from the expensive ones.

[Practice name] welcomes new [NHS and private] patients at [location]. If it has been a while since your last examination, call [number] — nobody will make you feel bad about the gap.