I get them scaled every 3 months. My Dentist consulted my RO and no issues were raised by her. I trust her completely. My dentist group is your generic family group, but they consult my RO before each major issue (root canals ect.)

I think it depends on the nature of the cancer, my tumor was very small but spanned the area between base of tongue and my tonsil.

I am 40 years young and just had a scope yesterday by the ENT that told me it couldn't look better. Almost 2 years from diagnosis right now.