Figure 1
From: Improvement of Total Etching Dentin Bonding with Subpressure

Representative SEM images of the bonding interface. C: Specimen of the control group, with no additional treatment after applying the adhesive and after 24 h of water storage; S8: Specimen of group S8, in which the dentin surfaces were treated under 0.8 bar after applying adhesives and after 24 h of water storage; S6: Specimen of group S6, in which the dentin surfaces were treated under 0.6 bar after applying adhesives and after 24 h of water storage; S4: Specimen of group S4, in which the dentin surfaces were treated under 0.4 bar after applying adhesives and after 24 h of water storage. S6m showed resin tags of S6 at high magnifications (×5000, ×10000); (rt) resin tags, (rb) resin branches (nano-resin-tags), (HL) hybrid layer.