Could it be more of a genetic thing to have straight teeth or are there outside factors involved too? Not to mention having crooked teeth can cause so many issues but it’s common.
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Modern human jaws don’t have enough room for our teeth, because infant breast feeding and chewing tough food have been largely minimized for modern children in developed countries. It’s not genetic, at least not entirely, but rather a change in the way modern humans eat, and how we feed our children. Breast feeding and tough food encourage better alignment and more robust development of the jaw as we grow.
Studies have shown that breast feeding or lack thereof is a massive predictor of tooth/jaw alignment problems. Infants that are more exclusively breast fed for longer periods of time are way less likely to develop misalignment.
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