Can I become a pilot if I have a medical/dental problem?
Under FAA regulations (which most people in the world can train under if they come to the USA) you should be fine. There are no dental requirements to be a pilot or obtain a medical certificate (as far as I know). You can reach out an AME in your local area if you are concerned, they should be able to answer the question for you. The only orally related regulations are that you be able to speak english proficiently and clearly. As long as you can do so you should be fine.