I've gotten a bunch of xrays in the past 3 months from my orthodontist (cephalograms) and from the doctor removing my wisdom teeth(dental x rays). could this cause permanent hair loss or other side effects?

No: You would need to be exposed to very, very high levels of radiation to experience any permanent changes.

Absolutely not: The totality of the radiation you received for Orthodontic Records and Wisdom Tooth Evaluation is less than normal background radiation on one transcontinental flight, or a day in the mountains, or two days on the beach. So next time cut your vacation short by a day to make up for it. Andy the way, call a Dermatologist now for an appointment to discuss your hair loss.