Affiliation: | 1.Department of Clinical and Social Dentistry, Federal University of Paraiba, Castelo Branco, s/n., Jo?o Pessoa, Paraiba, 58051-900, Brazil ;2.Lauro Wanderley University Hospital, Federal University of Paraiba, Castelo Branco, s/n., Jo?o Pessoa, Paraiba, 58051-900, Brazil ; |