So my wife has been diagnosed with Peridontal disease before and had
scaling performed to correct it and today when she goes to the dentist
she's given a regular cleaning and I'm told that it's more expensive
because the dentist has to charge it as it were a non-preventative
maintence cleaning and that any future cleaning has to be considered
the same. Now the dentist said to her that everything is perfect and
she has no problems so why is she (I) penalized by having to pay the
extra cost for a "maintenance" cleaning?

Note: my insurance will incure a $50 deductible whenever the work is
non-preventative.

Secondly, we had both had the same number of visits and both at the
same times. Yesterday my visit was a regular cleaning that took one
hour and hers was 30 minutes. Also xrays were taken for me but not for
her. I find this unusual. I would have expected them to take her xrays
too since it's been 1.5 years since they were last taken.