(A) Healthy papilla with mild amount of Randall's plaque (black arrowheads) (Plugging = 0, Pitting = 0, Loss of Contour = 0, Randall's plaque = a [PPLA 0a]). (B) Healthy papilla with moderate amount of Randall's plaque (black arrowheads) (Plugging = 0, Pitting = 0, Loss of Contour = 0, Randall's plaque = b [PPLA 0b]). (C) Healthy papilla with extensive amount of Randall's plaque (black arrowheads) (Plugging = 0, Pitting = 0, Loss of Contour = 0, Randall's plaque = c [PPLA 0c]).