just found myself a new dentist private I will be having a check up in the next week, I am immunosupressed and have been for many years , I have build up of plaque behind lower bottom teeth, which I suspect is causing metallic taste in moth, I have very dry mouth. Is having a deep clean more painful than a standard clean? I’m praying I don’t have gum disease, no amount of brushing gets rid,. Friends have bought these sonic things sold online to do their cleaning and removing of the tartar me being me would rather leave it to the professionals, Does it hurt! My gums do not bleed nor are they sensitive when brushing, what have others experienced if had calcium is behind their teeth please