… to an artificial saliva of NaCl, KCl, CaCl 2 , NaH 2 PO 4 , and urea, at component concentrations of (6.8, 5.4, 5.4, 5.0, 16.7) mmol/L, respectively, (pH = 4.8). For … in surface energy from the as-polished condition of (35-45) dyne/cm by up to (0.6 and 0.4) times at 24 h after …