Group 1 (EACA) - patients will receive the intra-alveolar application of a 500 mg tablet of the epsilon-amino caproic acid (EACA - Ipsilon® - Nikko Brazil, RJ) crushed in 0.9% saline. Additionally, they will be instructed to rinse with 500mg EACA tablets macerated and diluted in 2 tablespoons of water three times a day, in the two days after the extraction.