Activate arch wire is typically which?

• A. Not applicable
• B. Allowed
• C. Allowed with supervision
• D. Not allowed

Answer: (A)

Activation of an arch wire means deliberately bending or altering the wire to create new forces for tooth movement. In the typical workflow for fixed orthodontic appliances, simply placing the arch wire into the bracket slots and securing it with ties or ligatures is how the wire becomes engaged; there isn’t an additional separate “activation” step being performed at that moment. Activation concepts come into play later when the clinician makes adjustments to the wire’s shape or selects a different wire size or type to produce targeted movements, or when auxiliaries are used to generate forces. Therefore, in this context, talking about activating the arch wire isn’t applicable—the action described isn’t a discrete step in the standard chairside procedure, so the best description is that activation is not applicable.