There is a particular kind of patient who is doing everything right and getting punished for it. They brush twice a day without fail, often for longer than the recommended two minutes, and they brush thoroughly. Their gums are receding anyway.
When we mention that brushing might be part of the problem, the reaction is usually disbelief, sometimes mild offence. It sounds like being told that eating vegetables gave you a stomach ache.
But plaque is soft. It is a film, not a crust. Removing it takes contact and time, not pressure. And the tissue you are pressing against is thinner and more delicate than almost anyone assumes.
What Pressure Actually Does
Two things, and they compound.
It abrades the gum margin. The thin collar of tissue at the neck of each tooth takes the brunt of a hard scrubbing motion. Over years, it retreats. The result is a gum line that has migrated toward the root, exposing surface that was never meant to be exposed.
It wears the tooth surface itself. At the neck of the tooth, enamel is at its thinnest and gives way to cementum, which is considerably softer. Aggressive horizontal brushing, especially with an abrasive paste, carves a notch there. You can often feel it with a fingernail as a distinct groove.
Once root surface is exposed, it is more sensitive, decays more readily than enamel, and cannot be scrubbed back into place. Gum tissue does not grow back on its own.
Why It’s Rarely Brushing Alone
Here is the part that matters for getting the diagnosis right, because blaming brushing exclusively often misses the real driver.
The tissue you were born with sets the baseline. Some people have thick, generous gum tissue with solid bone underneath. Others have a thin biotype, where both the tissue and the bone plate over the root are delicate. Thin biotype recedes far more readily under the same forces. This runs in families.
Grinding and clenching flex the tooth at the neck under load and contribute to the same notching that gets blamed on brushing.
Tooth position matters. A tooth sitting forward in the arch has less bone over its root to begin with, so there is less margin for error.
Previous orthodontic movement can have pushed roots toward the outer plate of bone.
So the honest picture is usually a thin biotype plus one or two of the above, with brushing technique as an accelerant rather than the sole cause. That distinction matters, because someone who corrects their brushing and still sees recession has not failed. They have a different underlying factor that needs identifying. You can read more about what causes gum recession.
The Technique That Actually Works
Not “brush more gently” as vague advice, but specifically:
Use a soft-bristled brush. Not medium. Not firm. Soft. There is no clinical argument for stiffer bristles, and firm brushes exist because people buy them, not because they work better.
Hold it like a pen, not like a scrubbing brush. The grip changes the force more than any conscious effort to be gentle does.
Angle the bristles at about 45 degrees toward the gum line, so the tips reach just under the margin where plaque actually sits.
Use small circles or short jiggles, not long horizontal strokes. The sawing motion is what carves the notch.
Let the brush do the work. If the bristles are splaying outward, you are pressing too hard. A brush head that looks worn out in six weeks is a diagnosis.
Two minutes, twice a day. Longer at higher pressure is worse than shorter at correct pressure.
Electric Brushes and Pressure Sensors
A good electric brush with a pressure sensor is genuinely useful for hard brushers, mostly because it removes the guesswork. When it buzzes or the light changes, you are pressing too hard, and most people are surprised how little force triggers it.
The other benefit is that the brush supplies the motion, so there is less temptation to add your own scrubbing. Hold it against each tooth and let it work. Do not push.
If you use an electric brush the way you used a manual one, you get the same problem with more speed behind it.
The Toothpaste Question
Abrasiveness varies more between pastes than most people realize, and whitening formulations are often at the higher end. If you already have exposed root surface, a highly abrasive paste on that surface is not helping.
A paste formulated for sensitivity is usually a better fit if you have recession, and it addresses the symptom as well. You do not need much: a pea-sized amount is genuinely enough.
When to Get It Looked At
Correcting technique protects what you have. It does not restore what has gone.
Worth being seen if you have visible recession, sensitivity to cold or to brushing, a notch you can feel at the neck of a tooth, or a gum line that looks like it has changed in photographs over a few years.
The useful thing an examination gives you is measurement. Recession that is stable and recession that is progressing look identical on any given day and are managed completely differently. That distinction only comes from numbers recorded over time, which is what periodontal charting at your visits is for.
Where recession has gone far enough to threaten the tooth, or where there is very little firm tissue left, grafting is worth discussing. Where it is stable and you can clean it comfortably, monitoring is often the right answer, and you should be told that rather than sold a procedure.
If you are not sure which you are, book an appointment and we will measure it.
Common Questions
Q: My gums bleed when I brush. Should I brush more gently there?
A: Bleeding usually means inflammation, not injury, and the answer is generally to clean that area properly rather than avoid it. But bleeding is also a reason to be assessed, because healthy gums do not bleed.
Q: Will my gums grow back if I stop brushing hard?
A: No. Correcting technique stops further loss, which is worth doing, but recession does not reverse without treatment.
Q: Is an electric brush better?
A: For people who brush too hard, usually yes, mainly because of the pressure sensor. Technique still matters more than the device.
Q: How often should I replace my brush head?
A: Around every three months, or sooner if the bristles splay. Splaying early is a sign you are pressing too hard.
Q: I have sensitivity at the gum line. Is that recession?
A: It often is, though not always. Exposed root surface is a common cause and worth having looked at.
Talk it through with Dr. Cherry
A calm, unhurried look at where your gums stand, here in Lone Tree.
