The ribbon arch appliance was introduced by:
Solution
Correct Answer: Option A
The ribbon arch appliance was introduced by Edward H. Angle, who is considered the father of modern orthodontics. This appliance uses a rectangular cross-section archwire placed in a bracket slot to exert controlled forces on teeth, allowing precise tooth movement in multiple planes. The design improves torquing and rotational control of teeth compared to round wires. Angle's innovation laid the foundation for fixed appliance orthodontics by standardizing appliance design and mechanics.
Reference: Graber's Orthodontics, 7th Edition.