1. Assistant teacher, Dental surgeon, Dentistry College of FACIPE; Recife Pernambuco
2. PostDoc student, Teaching Staff Member, Postgraduate Program in Dentistry; Federal University of Pernambuco; Recife Pernambuco Brazil
3. Teaching Staff Member, Department of Clinic and Preventive Dentistry of the Federal University of Pernambuco; Recife Pernambuco Brazil
4. Teaching Staff Member, Postgraduate Program in Dentistry; Cruzeiro do Sul University; São Paulo São Paulo Brazil