Study design
INFILTRATION
This was a prospective, randomized (1:1), controlled, double-blinded, split-mouth trial, where the effectiveness of a solitary labial infiltration of 4% articaine with 1:100,000 epinephrine was evaluated and compared to that of 2% lidocaine with 1:100,000 epinephrine for the extraction of mandibular anterior teeth without an additional lingual injection.