Loss on drying, calcium concentration and pH of fluoride dentifrices

Abstract

Introduction:Fluoride dentifrices containing calcium carbonate have advantages such as control of dental plaque and progression of dental caries, also contributing to oral hygiene, represent most dentifrices marketed in Brazil.Aim:To evaluate the physicochemical properties of seven fluoride dentifrices containing calcium carbonate in relation to hydrogen potential (pH), loss on drying and calcium concentration.Materials and Methods:Data collection was performed using the potentiometric method for pH ranges, gravimetric analysis for loss on drying and atomic absorption spectrometry for the concentration of calcium ions. All tests were performed in triplicate and the analysis was performed entirely at random according to one-way analysis of variance at 5% significance level.Results:The pH values were alkaline and ranged from 8.67 (Oral-B 123®) to 10.03 (Colgate Máxima Proteção Anticáries®). The results of loss on drying ranged from 33.81% (Oral-B 123®) to 61.13% (Close Up®), with significant differences between brands tested. In relation to the calcium content, the highest and lowest concentrations were found in dentifrices Even® (155.55 g/kg) and Colgate Ultra Branco® (129 g/kg), respectively, with significant difference (P < 0.05).Conclusion:Fluoride dentifrices analyzed showed alkaline pH and high levels of loss on drying and calcium concentration. However, these physicochemical characteristics differed according to the different brands tested.

Investigating Bioactive-Glass-Infused Gels for Enamel Remineralization: An In Vitro Study

“…However, the conducted research has certain limitations. The developed gels require further testing to assess their biological properties, including cytotoxicity in cell cultures, as well as dental tests to verify their capability to penetrate dentin tubules and thereby alleviate hypersensitivity [50,51]. Simila and Boccaccini (2022) reviewed sol-gel bioactiveglass-containing biomaterials for restorative dentistry, highlighting the importance of further in vitro and in vivo studies to ascertain the full range of biological properties of these materials, including their ability to penetrate dentin tubules and reduce hypersensitivity [52].…”