I'm sorry I don't know of any in Ireland have you asked at your dental hospital if they know of any or ask your local Maxillofacial unit at the hospital and see if they can help. There is a few in the England that i know of and one that i've heard of in scotland.
I'm sorry that your suffering and wish there was something else that I could suggest to help you.
I see a realy good one in Bradford, West Yorkshire England.
Why not try an internet search just put in TMJ specialist in the Uk and see if thats any help you should get a list of Drs that specialise in TMJ up on your screen.
Good Luck.
Lorraine