herceptin and dental treatment following chemo, lumpectomy

I have just had a telephone consultation with a dr from my hospital and I had trouble with totally understanding what she was saying. Apparently I should have had a full dental checkup some months ago.  I am not registered witha dentist (I only have 7 of my own teeth)

my question is, when I find a dentist who will see me, what do I ask them to check.  Doctor said I should have xrays to check bone density.  Any advise whould be appreciated