In the first episode of Lets Face It, Dr. Z and Dr. Deal discuss a popular question they receive from their orthodontic patients: Why are our teeth crooked? They discuss how anthropologists and paleontologists have proven that there was no such thing as crowded or crooked teeth up until a certain point in history.The Doctors lay out three big changes in the evolution of our species and how that has led to smaller jaw sizes, which in turn has led to a myriad of other issues including orthodontic problems, obstructive sleep apnea, TMJ, craniofacial pain, etc.