Figure 1
From: Erosive potential of energy drinks on the dentine surface
Scanning electron microscope photomicrographs (magnification of 2,000×) showing the score to verify the dentinal tubules exposure. A) Grade 1 - Dentinal tubules fully opened; B) Grade 2 – Dentinal tubules partially opened; C) Grade 3 – Traces of opened dentinal tubules; D) Grade 4 – Dentinal tubules totally obliterated.