This is a randomized controlled clinical trial conducted at the Universidade do Vale do Sapucaí (UNIVAS), Pouso Alegre, Minas Gerais and the University of Vale do Rio Verde (UNINCOR) Três Corações, Minas Gerais. A project will be submitted to the Brazil Platform to UNIVÁS and UNINCOR ethics committees. Thirty children aged four to ten years old will be selected from the Pediatric Dentistry Clinic of the College of Dentistry of the Vale do Rio Verde Três Corações University. The sample will consist of 30 primary molars that show indication for pulpotomy. The inclusion criteria of the teeth to be selected are: absence of spontaneous painful symptomatology in the preoperative period, evidence of live red bleeding, cut resistance, associated with hemostasis after exposure of the pulp tissue. Radiographically, the teeth should present 2/3 of the root length, absence of radiolucent inter-radicular lesion and internal root resorption.