Guided Biofilm Therapy is a technology that has been around for some time, but the process has evolved to incorporate various types of powders and a new technique. The teeth are disclosed for client education, then an air polisher with the type of powder you require is used to remove plaque. Then a Piezo ultrasonic scaler is used to remove the tartar. The air polisher technique does remove some light tartar, and the rest is removed by ultrasonic with final hand instrument check.