Something must have changed within human evolution causing the appearance of crooked teeth. In past era, it was uncommon to come across these dental problems.
Key takeaways:
- People from distant ages did not have dental problems. These people had straight and symmetrical teeth as evidence from fossils and skeletons indicates.
- There is no proper answer why people have crooked teeth despite millions of dollars used on retainers and braces in an attempt to get a perfect smile.
- Some significant change must have happened during the Industrial revolution marked by a shift to urban lifestyles. People now have narrower mouths.
Mouths are narrower today, Monge says, but we have the same number of teeth as always. And so the idea goes: that causes crowding, an overbite, snaggle teeth or wisdom teeth that have no room to grow in.
Read the full story here
http://www.newsworks.org/index.php/health-science/item/96934-could-old-skulls-help-us-understand-why-we-have-crooked-teeth
