Found good dentist. But it is in Surat Thani.

Not that any I've had have ben bad, but there are a few people whose teeth can defy numbing, and still more who react to have spray hitting the back of their throats by gagging and choking.  It can become a truly bad experience, though I understand others wonder what the fuss is about.

The dental surgery at Thaksin hospital is about as good as it gets.  I've breezed through a couple of visits now.  Absolutely no spray, and I didn't feel so much as a twinge. 

I hastened to add neither visit was on one of the teeth that can't be frozen, but I believe he probably could do it, or at least minimise any pain.