The current study aimed to compare the pH, solubility value, and ion release capability of premixed mineral trioxide aggregates (MTAs) versus conventional pulp capping materials before after setting. following were used: resin-modified calcium silicate cement (TheraCal LC<sup>®</sup>, TLC), hydroxide (Ultra-Blend<sup>TM</sup> plus, UBP), 2 kinds MTA (Endocem MTA<sup&g...

The quenching constant for the iodide quenching of the fluorescence of riboflavin phosphate was measured at pH 5 and at pH 8. The value of the constant at the lower pH (where the phosphate group is unionized), k' = 23 M~ , was independent of the ionic strength, |i. The ratio k"/k' = f (k" the quenching constant at pH 8, where the phosphate group carries a single negative charge) was found to he...

Our previous finding of a fractal pattern for gastric pH and esophageal pH plus the statistical association of sequential pH values for up to 2 h led to our hypothesis that the fractal pattern encodes information regarding gastric acidity and that depending on the value of gastric acidity, the esophagus can signal the stomach to alter gastric acidity by influencing gastric secretion of acid or ...