The concentration of adrenaline used with lignocaine?: (A) 1.430555556, (B) 1:10,000, (C) 1:20,000, (D) 1:2,00,000
Answer is D. 1 in 1 lakh to 2 lakh pas (5mcg/ml) is the mixing of adrenaline with lignocaine in local anesthesia. In dental procedures: 1: 50000 to 1lakh.Ref: KK Sharma 3rd ed. Pg: 222.