Probably not wise exchanging body fluids too soon after dental surgery. 
Exactly. Body fluid exchange is very common in punting.
IMHO punting and dental treatment should not be mixed together.
Say you are doing dental plant, there are big wound exposure in your gum ....
Even for small treatment like cleaning your teeth from caries, there are still small wounds in your gum ....
If you are after dental treatment, as mentioned by another punter Hungary is well known for dental treatment with the fraction you would have paid in the UK.
External Link/Members OnlyA few of them even have branches here in the UK so you could choose to be treated here in the UK or Hungary ...