Oral Surgery

So I've decided to look around a bit to maybe get a second (or third) opinion on my invisalign treatment and cost. Only thing is that in the process I have become very confused as one dental practice sent me the following:

'I have had a chat to our Orthodontists and they all wanted to know if you have seen and Specialist Oral and Maxillofacial surgeon for your TMJ problem? The reason we ask this is that sometimes TMJ pain is due to congenital or degenerative problems. Even if we did ...