Slot size commonly used in orthodontics is:: (A) 0.017 x 0.021, (B) 0.014 x 0.024, (C) 0.018 x 0.025, (D) 0.010 x 0.020
Answer is C. The most commonly used slot size is 0.022*0.028 inch followed by 0.018*0.025 inch slot.