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:
“This teaching is not practical in the sense in which the New Testament is. It is not always sound sense in practice. The Brahman never proposes courageously to assault evil, but patiently to starve it out. His active faculties are paralyzed by the idea of caste, of impassable limits of destiny and the tyranny of time.”
—Henry David Thoreau (1817–1862)