The best age for taking an OPG (Orthopantomogram) to assess whether wisdom teeth need extraction is typically between 16 and 25 years old. This is because: 1. Wisdom teeth usually start erupting between 17-21 years old 2. X-rays can show if they are impacted, misaligned, or causing problems 3. Early evaluation helps prevent complications like crowding, infections, or cysts However, if there are no symptoms, some wisdom teeth may never need removal. If pain, swelling, or recurrent infections occur at any age, an OPG should be taken regardless.