I don't know what your major is now. If you major in clinical medicine, you can do dermatology or surgery after graduation. After you have been a licensed doctor for a certain number of years, you can take the plastic surgeon exam.
If you don't study clinical medicine, you can't study this major, and even if you do, you can't get the qualification. This major has a high threshold.
Personally, I think stomatology is still promising, but it should be based on personal hobbies.