Each group received a type of different treatment: Group PSP: Polishing with sandpaper 6,0; Group PCP: Polishing with sandpaper 6,0 and application of a metallic Primer; Group JSP: sandblaster with 1,0 m aluminum oxide; Group JCP: sandblaster with 1,0 m aluminum oxide and application of a metallic Primer.
Cada grupo recebeu um tipo de tratamento: Grupo PSP: Polimento com lixa d'água Nº 6,0; Grupo PCP: Polimento com lixa 6,0 e aplicação do condicionador metálico Alloy Primer (Kuraray); Grupo JSP: Jato de óxido de alumínio (1,0 m, 75lib/pol2) e Grupo JCP: Jato de óxido de alumínio (1,0 m, 75lib/pol2) e aplicação do Alloy Primer.