“Twice a year” is the number everyone knows, and for most people it is right. It is also, for a
sizeable minority, wrong — and the difference matters more than most patients realise.
Where the six-month rule comes from
The interval is not the result of a single landmark study. It became standard because it is a
reasonable average: long enough to be practical, short enough that most problems are caught while
they are still small and cheap to fix. For a patient with healthy gums, no history of decay and a
solid brushing routine, six months holds up well.
When three or four months is the better answer
Some people build up tartar faster, and some are simply at higher risk. You probably belong in
this group if any of the following apply:
- You have been treated for gum disease, at any point
- You smoke, or you have diabetes
- You are pregnant — hormonal changes affect the gums directly
- You wear braces or a fixed retainer, which trap plaque
- You have had more than one filling in the last two years
In those cases the calculation changes. A cleaning every three or four months is not upselling:
it is the interval at which we can keep ahead of the problem rather than react to it.
What actually happens during the appointment
A hygiene visit is not just polishing. We measure the pockets around each tooth, which is the
earliest reliable signal of gum disease, and we compare those numbers against your last visit.
That comparison is the real value of coming regularly — a single reading tells us little, a trend
tells us a lot.
The honest version
If your gums are healthy and your history is clean, six months is fine and we will tell you so.
If it is not, we will explain why and show you the measurements the recommendation is based on.
What we will not do is put you on a shorter interval without a reason you can see for yourself.