What is the active appliance:
A. headgear
B. reverse pull head gear
C. posterior bite plate*****
Active appliances employ force to the teeth to change their position
Most active appliances are fixed. Examples of active appliances include:
• Rapid maxillary expansion appliance (palatal expander)
• Helix
• Bite plate
• Pin and tube
• Ribbon arch
• Edgewise
• Beg light wire
Labels
Promatric