Figure 1.

Summary of treated groups

Groups	Bur	Adhesive materiais
Group SI	-	Single Bond
Group SI-B	+	Single Bond
Group CL	-	Clearfil SE
Group CL-B	+	Clearfil SE
Group XE	-	Xeno III
Group XE-B	+	Xeno III
Group CL-BP	+	37% Phosphoric acid+Clearfil SE
Group XE-BP	+	37% Phosphoric acid+Xeno III

SI: Single Bond, CL: Clearfil SE, XE: Xeno III, B: Bur; P: 37% phosphoric acid