I agree with SKi. You need to moniter your lab tests at least 4-6 weeks in the beginning. I was on PTU 300mg and went hypo in 2 weeks…terrible…almost worst than hyper to me. Also, it is wise to get your liver enyzmes checked when you have been on ATD’s at high dosages for long periods of time.
About your teeth, I have had 3 children and my teeth changed a bunch. I ended up having invisalign to straighten them out again. It took 6 months of wearing retainers at night. I also have to use sensitive toothpaste and a fluride rinse everynight (including flossing every night to help strengthen the gums). My teeth are much more sensitive since Graves disease DX. You just have to take extra special care of your body. Blessings to you~