I've got a clicky jaw, spoke to my Dentist about it as it used to get quite painful. I had a special guard made which I wore at night. At some point I lost the guard and now I don't even think about it.
My jaw still clicks but the Dentist assured me that its not a problem and the only way round it was an operation which involved external wires for a period of time and would be very painful. I just accept the clicks now and don't think about it.
I do find that if I have to have any dental work done which involves me having my mouth open for a long period of time it can get a bit painful, so the dentist gives me a special wedge to keep my mouth open. It really helps.