Bond Strength Survival of a Novel Calcium Phosphate-Enriched Orthodontic Self-Etching System after Various Ageing Protocols: An In Vitro Study

Figure 2

FE-SEM images of premolar buccal enamel surfaces etched with 7% nHA-SEP and debonded at 24 h. The conditioned teeth elicited regular, unblemished enamel surfaces with no or minimal residual adhesive (a, b) and abundant nCaP precipitations (c–f) abolishing and surrounding the micropores (d, e).

(a)

(b)

(c)

(d)

(e)

(f)