Effect of Airborne Particle Abrasion on Microtensile Bond Strength of Total-Etch Adhesives to Human Dentin

Figure 3

Scanning electron microscope (SEM) at backscattered electrons images of a Type 4 failure (cohesive fracture in the composite restoration) (FL-A). (a) Magnification ×100. (b) Resin composite structure at higher magnification (×1000).

(a)

(b)