In orthodontic relapse prevention, what is the typical initial retainer wear duration after active treatment?

• A. Usually full-time wear for several months to a year, followed by long-term or indefinite part-time wear as advised by the clinician.
• B. Never wear a retainer after treatment.
• C. Retainer wear is only needed for a week.
• D. Retainers should be worn full-time for life.

Answer: (C)