Aspen Dental Muncy, PA What happened to dentists that fill cavities? Muncy Pennsylvania

I recently went for my yearly check up to Aspen Dental. Before I received the exam and xrays I confirmed that it will be fully covered. The receptionist stated it would be covered. After receiving xrays and the exam the dentist explains that I need a "scraping" procedure for my teeth. At the end of my appointment, I was speaking with the receptionist who stated the amount of my next appointment's charge would be a whopping $500! I asked why and she went over the charges for the dental scraping and my cavities. I told her I could not afford that and I just needed the dental cleaning. She stated I had to have the scraping. I said I will think about it and get back to you. Two days later I called back and asked if I can just get the cavities filled? (I was concerned more with the cavities due to infections, etc.) The receptionist put me on hold to consult with the dentist. She stated I cannot have the cavities filled until I get the scraping! I was dumbfounded and I told her I will be looking for another dentist. Unbelievable how the dentist did not want to fill the cavities because he wanted me to first pay for a procedure that I feel is not necessary. I am 50 years old. The cavities had more priority than this scraping procedure just because of the pain and infections that can be a result of the cavities. 

Where are the dentist that know about health priorities vs. money?