As I recall the last dentist who pushed deep cleanings on me, it was mostly covered by insurance, there was a smalll copay or additional charge as I recall. I have since changed dental insurance, so will be looking into this. Codes can be confusing as in there are hundreds or thousands of them, with different varieties.
These deep cleanings included a “laser” treatment to “kill bacteria”. They printed out a page with codes which will be helpful when I talk to my insurance. It was $90 a quadrant, plus other goodies.
I have identified another dentist who I’ll talk to today. I find it suspicious that both times I’ve run into this, deep cleaning hard sell, it was a corporate chain, not a private practise. The first time, both my wife and I felt it was just a ploy to increase their income stream.