Fig. (5) Schematic illustration of the acquisition of specimens for micro-tensile bond strength test. (A) Removal of occlusal surface of the tooth to expose dentin; (B) Bonding procedure at the tooth surface and construction of composite resin blocks; (C) The specimen is vertically sectioned into multiple serial sections; (D1, E1) Non-trimmed specimens (stick-shaped); (D2, E2) Trimmed specimens.