Chaparral Village Dental & Orthodontics
Your Cart is Empty
There was an error with PayPalClick here to try again
Thank you for your business!You should be receiving an order confirmation from Paypal shortly.Exit Shopping Cart
|Posted on March 23, 2012 at 2:35 AM|
When humans turned from hunting and gathering to farming approximately 10,100 years ago, they set our species on a road of genetic variation that led from longer, sturdier mandibular structures to shorter jaws better suited to chewing softer food. As a result, tooth overcrowding-and orthodontia-are now one of the hallmarks of civilization.
According to a study done by researcher Noreen von Cramon-Taubadel, PhD, an anthropologist a the University of Kent in UK, global variations in jaw structure, in contrast to skull shape and facial features, are not attributable solely to genetic shift, but to a limited kind of natural selection. He looked at skull and jaw shape in 11 populations, six of which live by farming and five of which are hunter-gatherers. The populations included people from Africa, Asia, Australia, Europe, and the Americas.
von Cramon-Taubadel concluded that the transition to farming-and easier-to-chew food led to smaller, less-robust jaw structures and , according to the study abstract, "to increased prevalence of dental crowding and malocclusions in modern postindustrial populations."
Journal of the California Dental Association, March 2012.