Went to the dentist yesterday. Previously, she has suggested that I may be clenching and grinding my teeth and that's why they seem sensitive and tend to be a little crumbly. I wondered if it was the MTX but she said not.
So, I've been using a toothpaste called Duraphat 5000, made by Colgate, which you can only get on dental prescription and which is very high in flouride. I like it as it doesn't froth up so much as the general pastes and it's got a really nice minty taste. It's a bit pricey though - around £7 I think.
Anyhow - I ran out of the Duraphat a couple of months ago so just bought a bog standard yucky toothpaste to tide me over. I found that my teeth started feeling very sensitive so I planned to get more Duraphat on my visit yesterday. But when I mentioned the sensitivity, my dentist strongly suggested I have a bite splint made, to wear overnight to stop me clenching and grinding (and lord knows what else I get up to in my sleep). Knowing me, though, I would never wear it. I never wore the Lucie Jig thing she made to try and cure my shoulder/neck/headaches - which were actually cured by a steroid jab into my shoulder but that's another story.
Cost of said splint thing? Same as a crown. Got to be joking? No. Kerching, kerching! So I bought 3 more packs of the Duraphat and will see how I get on...