Can radiation/dental x-rays causes hair loss/vitiligo?

Hello, Doctors, is it possible too trigger alopecia areata and vitiligo by getting dental X-rays? When the machine takes X-rays of the teeth how it's places on the skin can the radiation from it damage melanocytes and causes vitiligo or the radiation damage hair follicles and cause hairloss such as patch hairloss on beard or if it hits the scalp area on the scalp? Thank you