Today I had a visit with a new dentist since my insurance company changed companies. I used to go every 3 or 4 months to have my teeth cleaned and never seemed to have a problem..Today I was told I need to have a periodontal scaling with delivery of antimicrobial agents in the gum area. My cost will be @ $400. I am a little concerned about the procedure and they indicated that they would get clearance from my multiple myeloma doctor.. Has anyone had this procedure done?