Affiliation: | 1. Graduate Program in Dentistry, Department of Periodontology, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil;2. School of Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil;3. Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Rio Grande do Sul, Brazil;4. University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil;5. Private practice - Paulo Colussi, Passo Fundo, Rio Grande do Sul, Brazil |