Active Appliances
An active appliance is a device used to apply forces to the teeth to change the relationship of the teeth.
Read more about this topic: Orthodontic Technology
Famous quotes containing the word active:
“Communists have always played an active role in the fight by colonial countries for their freedom, because the short- term objects of Communism would always correspond with the long-term objects of freedom movements.”
—Nelson Mandela (b. 1918)