Last reviewed: October 20, 2026 · DentalAirPolisher Editorial Team
The successor to the AIRFLOW Prophylaxis Master, launched at IDS 2025. Documented features, powders, what the published evidence on the GBT protocol shows, and the alternatives.
The GBT Machine is EMS's current combined tabletop system. It integrates AIRFLOW (supragingival air polishing), PERIOFLOW (subgingival air polishing) and PIEZON (ultrasonic scaling), and was launched at IDS 2025 as the successor to the AIRFLOW Prophylaxis Master. New on this generation: automatic handpiece recognition, an automated GBT mode and the EMS Partner 2.0 connected dashboard.
In two 2024 trials the GBT protocol performed comparably to conventional instrumentation, not better.
Comparing generations? See the predecessor, the EMS AIRFLOW Prophylaxis Master (price & quote), or read what a dental air polisher is.
Price on request. Free, no-obligation quotes from suppliers for clinics in the US & Canada.
Find a distributor / request quote| Category | Combined tabletop system — AIRFLOW (supragingival), PERIOFLOW (subgingival) and PIEZON (ultrasonic) in one device |
|---|---|
| Made in | Switzerland |
| Launch | IDS 2025 (Cologne); successor to the AIRFLOW Prophylaxis Master |
| New features | Automatic handpiece recognition; automated GBT mode; EMS Partner 2.0 connected dashboard for treatment data, powder consumption and maintenance scheduling |
| Chassis | Aluminum and tempered glass |
| Powders | PLUS Powder (erythritol with chlorhexidine, ~14 µm); AIR-FLOW Powder CLASSIC (sodium bicarbonate, ~40 µm); AIR-FLOW Powder Soft / PERIOFLOW (glycine, ~25 µm) |
| Protocol | Guided Biofilm Therapy (GBT), 8 steps |
| Price | Price on request |
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The GBT Machine runs EMS's PLUS Powder (erythritol with chlorhexidine) for supragingival and subgingival air polishing, sodium bicarbonate (CLASSIC) for heavier supragingival stain, and a glycine option. EMS documents the PERIOFLOW nozzle for biofilm removal in 4–9 mm periodontal and peri-implant pockets.
The machine is built around EMS's 8-step Guided Biofilm Therapy protocol: assessment, disclosing, motivation, AIRFLOW, PERIOFLOW, PIEZON, check and recall. Each step is explained in our Guided Biofilm Therapy guide.
| GBT Machine | AIRFLOW Prophylaxis Master | |
|---|---|---|
| Status | Current EMS flagship | Predecessor; still on sale in some markets |
| Architecture | AIRFLOW + PERIOFLOW + PIEZON | AIRFLOW + PERIOFLOW + PIEZON |
| Protocol | GBT, 8 steps | GBT, 8 steps |
| Powders | PLUS, CLASSIC, glycine | PLUS, CLASSIC, glycine |
| Documented additions | Automatic handpiece recognition, automated GBT mode, Partner 2.0 dashboard | — |
| Price | Price on request | Price on request |
EMS has not published a detailed side-by-side specification of the two generations, so ask the distributor for the current spec sheet of the unit being quoted. Details on the predecessor: AIRFLOW Prophylaxis Master guide.
The two 2024 randomized trials below evaluated the GBT protocol performed on the predecessor unit, the AIRFLOW Prophylaxis Master. They are the most direct evidence for the protocol that the GBT Machine runs.
In short: in these trials GBT performed comparably to conventional instrumentation. The evidence does not show clinical superiority. More detail in our GBT guide.
Final quotes depend on country, distributor, configuration, training, service contract and financing. Ask the distributor to itemize the unit, handpieces, starter powders, installation, training and service, and to confirm warranty terms.
| System | Documented powders | Price |
|---|---|---|
| Acteon OPUS | Sodium bicarbonate, glycine (SILKY powders) | Price on request |
| Mectron Combi Touch | Sodium bicarbonate, glycine | Price on request |
| NSK Varios Combi Pro2 | Calcium carbonate, glycine | Price on request |
| Woodpecker PT-E | Glycine, sodium bicarbonate | Price on request |
Full comparison: best-known dental air polishers.
FDA lists the GBT Machine as "GBT Machine Airflow Prophylaxis Master" under 510(k) K253254 (decision date January 28, 2026, class II). Health Canada licence 114177 (EMS, issued October 21, 2025). A 510(k) decision means "substantially equivalent" to a predicate; it is not FDA approval. A missing record means we could not verify it, not that the device cannot be sold. Confirm with the supplier that the record covers the exact model and kit. Records queried October 16, 2026. Source: openFDA 510(k) database and Health Canada MDALL.
No. They are two generations of EMS combined tabletop system. The GBT Machine was launched at IDS 2025 as the successor and adds automatic handpiece recognition, an automated GBT mode and the Partner 2.0 dashboard. Both run the same 8-step GBT protocol.
Quotes vary by country, distributor and configuration.
The evidence does not show that. In a 2024 split-mouth trial, pocket closure was 84.1% with GBT vs 84.4% with scaling and root planing at 3 months. A second 2024 trial found comparable results and shorter treatment time with GBT.
GBT is EMS's protocol and uses EMS's AIRFLOW, PERIOFLOW and PIEZON components with erythritol powder. Other manufacturers use their own protocol labels, such as NSK's MIT and Woodpecker's ABC.