AirFlow or a classic scale and polish — which cleaning do your teeth actually need?

They are not rivals, and choosing between them is usually the wrong question. A classic professional cleaning (professionelle Zahnreinigung, PZR) uses ultrasound and hand instruments to break off hardened tartar (Zahnstein), then polishes what remains. AirFlow — the brand name most patients know for air-polishing — sprays a fine powder in a jet of water and air, and is very good at soft bacterial film and surface stains in places instruments reach awkwardly: between teeth, in deep grooves, around brackets and around dental implants (Implantate). Powder cannot remove hardened deposits; instruments cannot clean a pitted fissure as gently. In practice most thorough cleanings today combine both, and the sensible decision is not which machine, but what your mouth actually has on it.

Knowing the sequence makes it much easier to judge whether you have had a full appointment or a quick polish.

1. Looking first. Findings are recorded: where deposits sit, where the gum bleeds, how deep the gum margin sits around each tooth. Cleaning without this step is cleaning blind.

2. Hard deposits off. An ultrasonic scaler vibrates at high frequency with a water spray and shatters calculus off the enamel. It is efficient and it is the workhorse of the appointment.

3. Hand instruments for the rest. Curettes and scalers reach edges the ultrasonic tip cannot address well — crown margins, tight interdental contacts, the area just below the gum margin.

4. Between the teeth. Interdental spaces are cleaned individually. This is where most of the disease-relevant film hides and where most of the appointment’s value sits.

5. Polishing. A soft cup and paste smooth the surfaces, so that new film has less to grip and stains come off with it.

6. Fluoride. A varnish or gel to harden the surface afterwards, particularly at exposed tooth necks.

7. The part people skip mentally. Showing you the two or three places you consistently miss, and agreeing when you should come back.

An air-polishing device mixes compressed air, water and a very fine powder into a controlled jet. Instead of scraping a surface, it removes the film from it — including from surfaces no instrument tip fits into.

Where that helps most:

• Deep grooves and fissures on the chewing surfaces of molars, and the pits where sealants meet enamel.
• Around brackets, wires and attachments. Anyone in fixed braces (feste Zahnspange) or wearing clear aligners (Aligner) with bonded attachments has a mouth full of shapes a polishing cup cannot follow.
• Around implants. Implant surfaces and their crown margins need cleaning without scratching, and metal instruments are used cautiously there. Fine powders are a standard part of implant maintenance.
• Surface staining. Coffee, black tea, red wine, curry, tobacco. A powder jet lifts these off far faster than a polishing cup does.
• Between teeth, where the jet gets into the concave surfaces beside each contact point.

One honest limit, because it is the most common misunderstanding: removing stains restores the tooth’s own colour. It is not whitening. If your teeth are naturally on the darker side of the scale, they will be that colour again once the coffee film has gone — cleaner, not lighter. Bleaching is a separate treatment with a different purpose.

The table explains why the “either/or” framing falls apart. If you have calculus, no amount of powder will remove it. If you have three brackets on every tooth and a coffee habit, instruments alone will leave film behind. Most people have some of both.

Air-polishing is not one thing, and this is worth asking about.

Sodium bicarbonate powder is the older, coarser option. It is effective against stubborn stains above the gumline and is not used on exposed root surfaces or inside pockets, because it is too abrasive for them.

Glycine and erythritol powders are much finer and gentler. They are the ones used around implants, on exposed tooth necks and just below the gum margin, and they are the reason air-polishing has become part of gum maintenance rather than only a stain treatment.

If you have sensitive necks, receding gums or implants, a practice should be using a fine powder on you rather than the coarse one. It is a reasonable thing to ask about at the start of the appointment.

Air-polishing is a gentle procedure, but it is not automatically right for every mouth on every day. These are the situations where the method gets adapted, and where you should mention things without waiting to be asked:

• Acutely inflamed, painful gums. Treat the inflammation first; blasting an acutely inflamed margin is uncomfortable and unnecessary.
• Established gum disease with deep pockets. That needs periodontitis therapy, not a cleaning. A powder jet does not clean a root surface at six millimetres depth.
• A strict low-salt diet, or high blood pressure being managed with salt restriction. Sodium bicarbonate powder contains salt, some of which is swallowed. A fine, sodium-free powder is used instead.
• Asthma, COPD or another chronic respiratory condition. Aerosol procedures are used with more care, with good suction and pauses; tell us in advance rather than mid-appointment.
• A blocked nose or heavy cold. Breathing through your mouth during a water-and-powder spray is unpleasant. Rebook.
• Very exposed, sensitive root surfaces. Fine powder, lower pressure, and a different angle — or the area is handled by hand.
• Recent oral surgery, or a healing extraction site. Wait until the tissue has closed.

None of this makes air-polishing risky. It makes it a procedure that should be adapted to you.

Most people describe air-polishing as the more comfortable of the two: a cool spray, no vibration, a slightly salty or sweet taste depending on the powder. The ultrasonic part of a classic cleaning is the noisier one, and if your tooth necks are exposed it can be briefly sharp — that is worth saying out loud, because the setting can be turned down or the area numbed. For patients who find dental treatment genuinely difficult, sedation and laughing gas (Lachgas) are available with us, and a prophylaxis appointment is a very reasonable place to use them.

Afterwards:

• Mild sensitivity to cold for a day or two is normal, particularly at the necks.
• Gums may be slightly tender if there was inflammation before the appointment. That settles as they heal.
• The fluoride varnish works best if you leave it undisturbed for a few hours — eat, but hold off on the vigorous brushing until later that day.
• Freshly cleaned surfaces take on colour more readily for a short while, so if you can postpone the espresso, the red wine and the black tea for a few hours, do.

Both methods are billed as private services for adults, and there is no single national price, because the amount depends on how many teeth are treated and how much work each one takes. Air-polishing is often included in the cleaning rather than charged as a separate luxury item, but that varies between practices — ask what the quoted figure includes before you sit down, not afterwards. What our own prophylaxis appointment covers is set out on Prophylaxis & professional cleaning – service page (EN).

Your statutory health insurance fund (Krankenkasse) pays for the removal of tartar above the gumline once a year, and many funds now add a voluntary subsidy towards a professional cleaning. The full picture is in What dental prevention does your German health insurance actually pay for?.