Please know that this is seriously putting the health, safety, and wellbeing of our patients at risk. There is no way to only scale above the gum line and remove all the disease-causing bacteria/deposits. Hygienists are specifically trained in disease prevention, and this cannot be trained "on the job". Where are the very specific guidelines and recommendations to regulate these assistants? Scaling teeth is more than "cleaning", it is a medical procedure that requires training and expertise from a licensed professional.