Figs. (4A & B) SEM backscatter electron images of the surface of non-demineralized dentin after CAP I (plasma jet) Figs. (4A, B) and CAP II (DBD source) treatment Figs. (4A, B) and detachment (both 15 kV acceleration voltage, 500 x magnification). The displayed sections show extended areas of fractures within the adhesive/composite in the non-demineralized specimens that had been previously treated with cold atmospheric plasma.