Sassi, Maira Soares, Aislan Pereira de Almeida, Raildo Silva Coqueiro, Rui Barbosa de Brito Júnior, and Matheus Melo Pithon. 2020. “Esthetic Perception Regarding Periodontal Changes: A Crosssectional Study”. Brazilian Dental Science 23 (1). São José dos Campos, Brazil:8 p. https://doi.org/10.14295/bds.2020.v23i1.1855.