Guided Biofilm Therapy (GBT) is an eight-step dental plaque management and cleaning procedure produced by Swiss dental engineering firm EMS The procedure minimizes the use of power and hand instrumentation and is minimally invasive on all types of dental tissues. The procedure uses the EMS Airflow tool, which is quieter and uses air to do all the hard work, making it minimally invasive. AIRFLOW ® is a predictable procedure for the removal of biofilm, stains and young calculus from teeth, implants, restorations, orthodontic appliances and from supra and subgingival areas.