Evaluation of pH and Acidity in Xylitol Lollipops, Propolis Mouthwash, and Probiotic Lozenges: An in Vitro Study

Ralitsa Bogovskagigova, Krasimir Hristov, Natalia Gateva, Ivanka Penchevael Tibi

Abstract: Recently, attention has focused on studying the physicochemical parameters of certain prophylactic products and their erosive and cariogenic potential. These characteristics include sugar content, endogenous pH, and titratable acidity. This study aims to assess the endogenous pH and titratable acidity of xylitol lollipops, propolis mouthwash, and probiotic lozenges in vitro. The results showed that the lollipop had the lowest endogenous pH, followed by propolis mouth rinse. The probiotic tablet had the highest pH value but was still below the neutral level. The average values for titratable acidity ranked the products in the same order: xylitol lollipops had the highest average titratable acidity 27.3 geq, followed by the propolis oral solution 25.1 geq, and the probiotic tablets were last 5.0 geq. The prophylactic products in this study are acidic, and their frequent use negatively impacts dental structures. Their regular intake can lead to erosion and favor the development of a carious process in the future

Keywords: pH, titratable acidity, xylitol, propolis, probiotic