I had a pretty huge overbite. I had 2 premolars removed and orthodontic treatment, when I was a teenager. However, I had a removable brace, which I seldom ever wore. I was teased enough and even more when I wore it (braces were not all that common here then). As a result, I became an adult with an overbite and gaps. I had a fixed brace fitted in my early 30s and the problem was corrected in about 10 months.
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"We act as though comfort and luxury were the chief requirements of life, when all we need to make us really happy is something to be enthusiatic about." Charles Kingsley