My lower jaw is small in size. I want to get it corrected asap without undergoing any surgery. Is it possible? (Photo)

in photo it seems like i'm having a overbite and may be i would have but i think my lower jaw is small in size and when i went to a dentist (traditional) he said my both upper and lower jaw are perfectly aligned my size of lower jaw is small. i want a treatment which can fix my problem in short period without any surgery.

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