Can I become a pilot if I have a dental problem (I don't have 6teeth I have artificial one) and I broke my chin bone I have a steel plate there and I really want to become a pilot is this okay? can I still become pilot as I don't have any other defect in my body ?
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.
This is a link for the FAA i.e the US one: https://www.faa.gov/about/office_org/headquarters_offices/avs/offices/aam/ame/guide/standards/ , Europe has other standards, I am not a AME ( Aeronautical Medical examiner) but I would think it poses no problems to have dental issues for an initial, in Europe we needed to have a certain mastication coefficient that is you can chew food properly that’s all as far as i remember.