Have you heard about GBT (Guided Biofilm Therapy) but aren’t sure how it differs from traditional ultrasonic scaling? This comprehensive guide explains everything: the techniques, key differences, indications, pricing, and how to choose the right method for your situation in Geneva.
What Is Classic Dental Scaling?
Definition
Classic dental scaling is one of the most common procedures in oral hygiene. It involves removing tartar that has accumulated on tooth surfaces and below the gum line — areas where a toothbrush can no longer reach.
How Does Tartar Form?
Dental plaque (or biofilm) is a bacterial film that naturally forms on teeth every 24 to 48 hours. If it is not removed by brushing, it mineralises in contact with the calcium salts present in saliva and becomes tartar in approximately 10 to 14 days.
Unlike plaque, tartar is as hard as stone and cannot be removed by brushing alone, however vigorous. Only a dental health professional can eliminate it.
The Ultrasonic Scaling Technique
Standard scaling uses an ultrasonic scaler — an instrument that vibrates at very high frequency. These vibrations break up and dislodge tartar deposits from the tooth surface.
Typical steps include:
- Running the ultrasonic scaler over all tooth surfaces
- Thorough rinsing to flush out tartar fragments
- Polishing with an abrasive paste to smooth the surface and remove stains
- Optional fluoride application to remineralise the enamel
What Classic Scaling Treats Well
- Supragingival tartar (above the gum line), visible to the naked eye
- Dense, long-standing subgingival tartar
- Heavy build-up requiring significant mechanical force
Limitations of Classic Scaling
- Less effective at eliminating fresh biofilm and surface stains without additional polishing
- Vibrations and noise can be uncomfortable for sensitive patients
- Does not visualise biofilm before treatment: less targeted cleaning
- Abrasive polishing paste may, over time, slightly wear down enamel
What Is GBT (Guided Biofilm Therapy)?
Guided Biofilm Therapy (GBT) is a dental prophylaxis approach developed by EMS (Electro Medical Systems), a world leader in dental technology. It is a complete, standardised 8-step protocol that places bacterial biofilm elimination at the heart of treatment.
The Core Concept: Biofilm
Whereas classic scaling primarily targets mineralised tartar, GBT focuses first on biofilm — that living bacterial film which, if left in place, progressively transforms into tartar and causes cavities, gingivitis, and periodontal disease.
Technologies Used in GBT
Airflow
The Airflow device projects a mixture of warm water, compressed air, and a fine biocompatible powder (based on erythritol, a natural sugar) onto tooth surfaces. This gentle yet precise jet effectively removes:
- Bacterial biofilm
- Surface stains (coffee, tea, tobacco)
- Recent deposits
- Biofilm in interdental spaces, gingival pockets, and around implants
Piezon NO PAIN
For older, mineralised tartar deposits, GBT uses the latest-generation Piezon technology. Its ultra-thin tips vibrate at precisely calibrated frequencies, removing tartar without causing pain and without damaging the enamel or surrounding gingival tissue.
Biofilm Disclosing Agent
This is the most distinctive feature of GBT: before any cleaning begins, a non-toxic dye is applied to the teeth to visually reveal the biofilm. This dye stains bacteria pink or red, making visible what is normally invisible to the naked eye.
This serves two essential purposes: guiding the hygienist toward the areas that need priority treatment, and showing the patient where they are brushing poorly in order to improve their daily home hygiene.
Key Differences Between the Two Methods
| Criterion |
GBT Scaling |
Standard Scaling |
| Primary target |
Bacterial biofilm (living plaque) |
Hardened mineralised tartar |
| Technology |
Airflow + Piezon NO PAIN + disclosing agent |
Ultrasonic scaler + polisher |
| Comfort |
Very comfortable, warm water, virtually painless |
Vibrations, noise, possible sensitivity |
| Precision |
Guided by biofilm disclosing agent, highly targeted |
Empirical, based on visual detection |
| Implant treatment |
Ideal, adapted tips, no risk |
Not recommended, risk of scratching |
| Sensitive patients |
Ideal (children, anxious patients, periodontal patients) |
Less suitable |
| Heavy old tartar |
Good results when combined with Piezon |
Very effective, mechanical force |
| Session duration |
45 to 60 minutes |
30 to 45 minutes |
| Aesthetic result |
Excellent stain removal |
Good with polishing |
| Cost |
Slightly higher (advanced technology) |
More accessible |
The 8 Steps of the GBT Protocol Explained
GBT stands out for its rigorous, standardised, and reproducible 8-step protocol. Here is a detailed breakdown of each step as applied at Clinique Dentaire Chantepoulet.
Step 1: Initial Assessment
The hygienist carries out a complete periodontal health assessment: pocket depth, gum condition, presence of implants, dental history. This assessment allows the protocol to be tailored to your specific situation.
Step 2: Biofilm Disclosure
A plaque-disclosing agent (non-toxic dye, safe for mucous membranes) is applied. The biofilm turns a vivid pink or red, becoming perfectly visible. The hygienist now knows exactly where to intervene.
Step 3: Education and Motivation
By showing you the coloured areas, the hygienist explains how to improve your brushing technique and use of dental floss or interdental brushes. This is a fundamental step in long-term prevention.
Step 4: Airflow — Precision Cleaning
The Airflow projects a jet of warm water mixed with erythritol powder onto all revealed surfaces. This jet removes biofilm, stains, and recent deposits without aggressing the enamel. It reaches areas impossible to treat otherwise: interdental spaces, gingival pockets up to 4mm deep, surfaces around implants and orthodontic appliances.
Step 5: Perioflow (if necessary)
For deeper periodontal pockets (greater than 4mm), a special Perioflow tip is used with the Airflow to disinfect and decontaminate these areas inaccessible during routine cleaning.
Step 6: Piezon NO PAIN — Tartar Treatment
If mineralised tartar remains after Airflow treatment, the Piezon steps in. Its ultra-thin tips and precisely calibrated vibrations remove supra- and subgingival tartar with minimal trauma to the enamel and tissues.
Step 7: Quality Control
A further application of the disclosing agent may be performed to verify that all biofilm has been eliminated. If any areas persist, they are retreated immediately.
Step 8: Remineralisation, Fluoride, and Instructions
A fluoride varnish is applied to remineralise the enamel and strengthen the teeth’s natural defences. The hygienist provides personalised instructions to maintain good home hygiene until the next appointment.
Who Should Choose Which Method?
Choose GBT if you:
- Are an anxious patient or have pronounced dental sensitivity
- Have dental implants (GBT is the gold standard for their maintenance)
- Wear orthodontic appliances (Invisalign, braces)
- Want the gentlest and most comfortable method possible
- Want a precise assessment of your oral hygiene with personalised advice
- Suffer from gingivitis or mild to moderate periodontitis
- Are bringing a child for their first hygiene appointment
- Have little tartar but stains and biofilm to eliminate
Standard scaling may be sufficient if you:
- Have a significant accumulation of old, hardened tartar
- Have not had a scale and polish in a long time
- Are looking for a more economically accessible option
- Have a good tolerance for the vibrations and noise of ultrasonic instruments
Please note: GBT and standard scaling are not mutually exclusive. In many cases, the hygienist may combine both methods in a single session.
Pricing and Reimbursement in Geneva
Indicative Prices
| Service |
Price range |
| Standard scaling (30–45 min) |
CHF 120 – 180 |
| Full GBT session (45–60 min) |
CHF 180 – 280 |
| Dental check-up + hygiene |
CHF 200 – 350 |
| Initial consultation + periodontal assessment |
CHF 80 – 150 |
Insurance Reimbursement
In Switzerland, dental hygiene care is generally not reimbursed by basic health insurance (LAMal). Some supplementary insurance policies (LCA) provide partial reimbursement for preventive care, typically between CHF 200 and CHF 500 per year depending on the policy.
We recommend checking with your health insurer before your appointment. Our team can help you prepare the necessary documents for a potential reimbursement.
How Often Should You Have Scaling or GBT?
| Patient profile |
Recommended frequency |
Suggested method |
| Healthy adult, adequate hygiene |
Once a year |
GBT or standard |
| Rapid tartar build-up, smoker |
Every 6 months |
Combined or standard |
| Patient with dental implants |
Every 4 to 6 months |
GBT recommended |
| Gingivitis or mild periodontitis |
Every 3 to 6 months |
GBT recommended |
| Treated periodontitis (maintenance) |
Every 3 months |
GBT |
| Children from age 6 |
1 to 2 times a year |
GBT (gentle approach) |
These frequencies are general recommendations. Your dental hygienist at Chantepoulet will prescribe a personalised schedule during your initial assessment.
Conclusion: Why Chantepoulet Offers Both Methods
At Clinique Dentaire Chantepoulet, we have chosen to offer both classic scaling and GBT, because there is no one-size-fits-all solution in preventive dentistry.
Every patient is unique. Your periodontal health, your history, your sensitivity, the presence of implants or orthodontic appliances, and your personal preferences all guide our recommendation.
Our commitment: to honestly present both options, their advantages and limitations, and to help you choose what is best for your oral health.
GBT is our first-line recommendation for the majority of patients, particularly for its comfort, precision, and preventive approach. Classic scaling remains a powerful tool for situations where significant mechanical force is required.
In all cases, regular professional dental hygiene is one of the most valuable investments you can make for your health. It prevents cavities, gum disease, tooth loss, and even associated systemic conditions such as cardiovascular disease.
Book an appointment at Clinique Dentaire Chantepoulet
Our team of hygienists is available to carry out a complete periodontal assessment and recommend the most suitable treatment for your situation.
📍 Rue de Chantepoulet 21, 1201 Geneva, 3rd floor 📞 +41 22 547 44 44 — Mon–Fri: 8am–7pm | Sat: 8am–5pm 🌐 Book an appointment online
Frequently Asked Questions (FAQ)
Is GBT truly painless?
Yes. The use of warm water, the gentleness of the erythritol powder, and the precision of the Piezon NO PAIN make a GBT session very comfortable. The vast majority of patients, including those who dreaded dental care, report a significantly more pleasant experience than with classic scaling.
Can GBT and standard scaling be combined in the same session?
Absolutely. For patients presenting both significant biofilm AND very hardened tartar, the hygienist can use the Airflow for biofilm and stains, then the ultrasonic scaler for particularly thick tartar deposits, before finishing with the Piezon.
Is GBT suitable for children?
Yes — it is actually the preferred method for children. The gentleness of the Airflow, the absence of unpleasant vibrations, and the educational aspect of biofilm disclosure make it an excellent tool for introducing children to preventive care without creating anxiety.
Does GBT damage the enamel?
No — quite the opposite. The erythritol powder used in the Airflow is very gentle and does not scratch the enamel. The Piezon NO PAIN is designed to respect both hard and soft tissues. GBT is in fact more respectful of enamel than traditional scaling followed by abrasive polishing.
How long do the results of a GBT session last?
With proper brushing twice a day, use of dental floss, and interdental brushes, the results of a GBT session are maintained for between 6 months and 1 year for most patients.
