During the time we are hyperthyroid, we lose bone mass. If we lose enough bone mass, it can lead to osteoporosis. Once we have been treated, we regain bone mass, and we have hope of getting back to normal. A bone scan is important if you've been hyperthyroid for a long period of time before diagnosis and treatment. Since teeth are made of bone tissue (aren't they?), they can also suffer when we lose bone mass, but those issues should resolve once we've had successful treatment. Other than that, I don't believe there are specific issues with teeth that are related to Graves' Disease.
Please note that when you see the dentist for any procedure requiring anesthetic, you want to ask for the anesthetic WITHOUT epinephrine. It's equivalent to adrenaline, and it can make us feel super-hyper. NO fun. The epinephrine makes the anesthetic act quicker and last longer, so if you are having a complicated procedure done, they may have to "boost" the anesthetic at some point during the procedure, but it's worth it for your own comfort.
GDATF Online Facilitator