Dental calculus: why it is dangerous and how it is removed

Dental calculus is hardened plaque that can no longer be removed with a brush: it is taken off at the clinic with ultrasound and Air-Flow. It is dangerous not in itself but because it keeps a permanent focus of bacteria against the gum — and that is where the road from bleeding gums to periodontitis and tooth loss begins.

Where it comes from

It all starts with biofilm — soft plaque that forms on the teeth within a few hours of brushing. If it is not removed, minerals from saliva gradually turn it into hard deposits. The process takes roughly ten days to two weeks.

After that the calculus acts as a scaffold: its rough surface holds new plaque better than smooth enamel, and deposits build up faster. That is why «a little calculus» rarely stays little.

It most often appears where the brush reaches least well and where the salivary gland ducts open: on the inner side of the lower front teeth and on the outer side near the upper molars.

What makes it genuinely dangerous

Calculus in itself is not a disease. The problem is that it holds bacteria right up against the gum margin, and the body responds with inflammation.

The difference between these two conditions is fundamental, and that is exactly why waiting is a bad idea. Bleeding gums are not a «feature» — they are a signal.

There are side effects people notice first of all: persistent bad breath that chewing gum does not mask, and a dark line along the gum margin that shows when you smile.

How it is removed

With home remedies — no way. This is not plaque but mineralised deposits bonded to the enamel surface. Neither «anti-tartar» toothpaste, nor a water flosser, nor baking soda removes them. Attempts to scrape calculus off with something hard end in gum injury and scratches on the enamel, to which plaque then sticks even more readily.

At the clinic the procedure is carried out in several stages. At Houston this is the protocol GBT (Guided Biofilm Therapy) on the EMS AIRFLOW® Prophylaxis Master unit:

• Disclosing. Plaque is stained with a disclosing agent — everything becomes visible, including what the eye misses.
• Air-Flow. A warm jet of powder, water and air removes biofilm and pigment from coffee, tea and tobacco.
• Ultrasound (PIEZON). Dense deposits are broken up by the vibration of the tip.
• Polishing and fluoride — a smooth surface stays clean for longer.

Air-Flow nozzles at the clinic are single-use, a separate one for every patient. More about the protocol itself in the article about professional GBT hygiene.

If the calculus is below the gum

Deposits are not only the visible kind — there are subgingival ones too, inside periodontal pockets. You will not see them in a mirror, and ordinary hygiene does not reach them.

Here treatment is already required: closed curettage, open if necessary, and to speed up healing — PRF plasma therapy (from UAH 2,850) — platelet-rich fibrin made from the patient's own blood. More on the page periodontics page.

What it costs and how often to do it

Professional GBT hygiene — from UAH 2 750 for the full protocol, maintenance GBT Light — from UAH 2 000. The scope depends on how much build-up there is and on the state of your gums, so the doctor gives an exact figure after the examination.

For most people the interval is every six months. Every three to four months if you are prone to periodontitis, have implants or smoke. Regularity matters more than intensity here: biofilm always comes back, the only question is whether it has time to mineralise.

What to do at home so calculus does not build up again

Removing calculus is half the job; the other half is making sure it does not come back within a month.

• Brush twice a day for two minutes, not forgetting the gum line.
• Be sure to use interdental brushes or floss — it is between the teeth that calculus forms most often.
• A water flosser is a useful addition, but not a replacement for a brush and floss.
• Do not brush hard: a stiff brush and heavy pressure injure the gums and do not remove calculus.

Frequently asked questions