@PinkSparklyPussyCat
I found a new dentist who is actually far better but it's annoying that they can pretty much do what they like...
This pisses me off too. There should really be more control and governing over dentists, and they should ALL be NHS (IMO, before anyone starts!) And the fees should be capped. It's not like people choose to have dental problems and fillings etc... 
Also, the dentists pre early-1980s have got a lot to answer for too, for 'drilling and filling' for cash, and doing work that was not needed. For that reason alone, people born before 1975, should have free dental treatment as a given.
My teeth were drilled and filled when I was a child/teen in the 1970s and early 1980s, and I have had many of the fillings drop out and need refilling over and over, and 5 of them have had to be crowned. I have also had 8 extracted.
Most people I know over 48-50, have a mouth full of fillings and crowns now. I swear if I had never gone to a dentist, my teeth would be in much better condition. At first glance, when I smile, my teeth look OK, as my first 6 (top and bottom, so 12 altogether,) look OK, and are fairly OK apart from 3 or 4 small white fillings. But all the back ones are compromised. Filled, crowned, or extracted ... I only actually have 24 teeth now, of the original 32.
Dentists are much better now, but as I said, ALL dental fees should be capped, as people don't CHOOSE to have dental issues.