They conduct energy and electricity to an organ or organ system. The crooked or over crowded teeth of a child are tied to malnutrition of both male and female parents. http://bit.ly/1WLjFjA Malnutrition causes the skull structures to be compromised, without the proper building material necessary to execute the fully developed skeletal system. This in turn causes situations where teeth are extracted, which further increases disease and dysfunction in the population. Health is the most important factor for human evolution, stability and happiness. Our genes are not set and are controlled fully by signaling they receive from our environment, mostly the food we consume. North Americans are some of the most unhealthy people to ever walk the face of the earth because we honor a corrupt science/medical system that ignores the basic principles of health.