Affiliation: | 1. Conservative Dentistry Departament, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil;2. Department of Restorative Dentistry, Araraquara Dental School, S?o Paulo State University, Araraquara, S?o Paulo, Brazil;3. Department of Prosthodontics, Dental School, University of Southern Santa Catarina, Tubar?o, Santa Catarina, Brazil |