Hi Natalie
I'm an interloper from the Hips side of things. I've been interested in following your thread as you are at Wrightington. So am I.
I had an accident on New Year's Eve 2009, and had hip surgery in Jan 2010. Later I developed an infection, and had a 2 stage revision before Christmas. I'm sorry you are in so much pain. Obviously I've had a few experiences of pain over the accident and the 3 surgeries, but I honestly can't say pain has been my daily companion, as it is yours. That is very debilitating, I know.
I wanted to stick my ten penn'orth in re dentistry. Before I left Wrightington I asked my surgeon if antibiotics were needed before, during or after dental work. He told me that the current guidelines from his professional body are that there is no evidence that dental work can cause infections on prostheses. He added that in his opinion there is a danger in taking regular antibiotics like this, as a time might come in the future when you really need them for something else: and you have built up a resistance. I can see the logic in that. (In fact, this aspect was in the news a few weeks ago, as I'm sure you saw on TV.)
My dentist is helpful, but does not seem to have any guidelines from his own professional body.
I am very careful about dental hygiene (as I always have been), and when I go to the dentist now I use mouthwash just before I go in, use the whole cup which the dentist provides, and have some ready in the car to use on the way home. I've no idea whether that does any good! But it makes me feel better.
This whole thing is a bit of a minefield, isn't it? I have no idea what caused my late onset infection. Very probably will never know.
All the best to you.
Glynis