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Effect of surface treatment on adhesion to dentin

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Figure 1. SEM images of dentin treated with: (A) diamond rotaryinstrument (presence of smear layer); (B) 35%phosphoric acid; (C) pumice slurry; (D) pumice slurryfollowed by 35% phosphoric acid etching (presenceof contaminants); (E) 25µm-aluminum oxide airabrasion; presence of particles after water spray; (F)25µm-aluminum oxide air abrasion followed by 35%phosphoric acid etching; (G) 50µm-aluminum oxideair abrasion; presence of particles after water spray;(H) 50µm-aluminum oxide air abrasion followed by35% phosphoric acid etching; (I) sodium bicarbonateair abrasion; presence of particles after water spray;(J) sodium bicarbonate air abrasion followed by 35%phosphoric acid etching.13
Table 1.  Advantages and disadvantages of primers with varioussolvents in adhesive system.8
Tabel 2. Components and characteristic of fourth, fifth, sixth and seventh- generation   bonding agent
Figure 3. The bonding mechanism of this self adhering flowablecomposite. 7

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