A guy who runs a dental service in a penitentiary has contacts in Mexico? Are you sure this isn't, well....you know....a con?
Oh, come on C C ! Don't hold back ! Tell us what you REALLY
think of the dentists being described here ! LOL !
It looks like most of us are going to agree with you ! He he he ! !
The general view of the common (PPRuNe) man appears to be clear !
OP - proceed as you wish, but very much at your own risk !
Good luck !
