Author Affiliations

Jose Luis Valin Rivera,¹ Edison Gonçalves,² Paulo Vinícius Soares,³ Giovana Milito,⁴ Matsuyoshi Mori,⁵ Francisco Palacios Fernández,⁶ Guillermo Francisco Palacios Roque,⁷ Jorge O. Ricardo Pérez,⁸ Meylí Valin Fernández,⁹ Marcia Tiemi Saito,¹⁰ Noélio Oliveira Dantas,¹¹ and Gilberto García del Pino¹²

¹Politechnical School, São Paulo University (USP). Av. Prof. Mello Moraes, 2231, CEP: 05508-900, São Paulo, SP, Brazil. Tel.: 55 11 3091-5320, Fax: 55 11 3091 9055

²Politechnical School, São Paulo University (USP). Av. Prof. Mello Moraes, 2231, CEP: 05508-900, São Paulo, SP, Brazil. Tel.: 55 11 3091-5320, Fax: 55 11 3091 9055

³Faculty of Dentistry, University of Uberlândia (FOUFU). Av. Pará, 1720, Bloco 4L, anexo B, sala 39, Campus Umuarama, CEP: 38400-902, Uberlândia, MG, Brazil

⁴Faculty of Dentistry, University of Uberlândia (FOUFU). Av. Pará, 1720, Bloco 4L, anexo B, sala 39, Campus Umuarama, CEP: 38400-902, Uberlândia, MG, Brazil

⁵Faculty of Dentistry, University of São Paulo, (FOUSP). Av. Professor Lineu Prestes, 2227, Cidade Universitária, CEP: 05508-000, São Paulo, SP, Brazil

⁶Faculty of Natural Science, University of Oriente. Ave. Patricio Lumumba s/n Altos de Quintero, CP: 90500, Santiago de Cuba, Cuba. Tel: 53 22 63 1860, Fax: 53 22 63 2689

⁷Faculty of Natural Science, University of Oriente. Ave. Patricio Lumumba s/n Altos de Quintero, CP: 90500, Santiago de Cuba, Cuba. Tel: 53 22 63 1860, Fax: 53 22 63 2689

⁸Faculty of Natural Science, University of Oriente. Ave. Patricio Lumumba s/n Altos de Quintero, CP: 90500, Santiago de Cuba, Cuba. Tel: 53 22 63 1860, Fax: 53 22 63 2689

⁹Politechnical School, São Paulo University (USP). Av. Prof. Mello Moraes, 2231, CEP: 05508-900, São Paulo, SP, Brazil. Tel.: 55 11 3091-5320, Fax: 55 11 3091 9055

¹⁰Institute of Physics, University of São Paulo. Rua do Matão, 1371, CEP: 05508-090, Cidade Universitária, São Paulo, SP, Brazil. Fax: 55 11 3814-0503.

¹¹Institute of Physics, University of Uberlândia. Av. Jõa Naves de Ávila, 2121, Campus Sanra Mônica, CEP: 38400-902, Uberlândia, Minas Gerais, MG, Brazil. Tel.: 55 34 3239-4411, 55 34 3218-2111.

¹²University of Estate of Amazonas. Av. Darcy Vargas, 1200, CEP: 69050-020, Manaus, AM, Brazil. Tel.: 55 92 3236-5573