A big NO on the dentist

Who knew?  I had my regular 6 month dental cleaning scheduled for yesterday.  I got up in the chair, wondering if the chemo would have caused cavities and curious why my teeth are so sensitive to hot foods now.  The hygienist asked if I had apporoval from my oncologist to have a dental cleaning.  Huh?  I hadn't ever thought about that.  They said they would not proceed without permission from the oncologist.  They said that cleanings can dislodge bacteria that can travel right to your heart.....or something like that.  I made a phone call to the oncologist while sitting in the dental chair.  Yep, not allowed to have a dental cleaning for 2-3 months post chemo.  Sigh.  Rescheduled for November.