# Efficacy of Oxy-Ionic Solutions With Varying pH Levels Against Streptococcus mutans In Vitro

## TL;DR

This study compares the effectiveness of oxy-ionic solutions at different pH levels against Streptococcus mutans, a bacteria linked to tooth decay, and finds that pH 5 solutions perform best.

## Contribution

The study introduces oxy-ionic solutions as a potential alternative to chlorhexidine for antimicrobial dental treatments, emphasizing pH-dependent efficacy.

## Key findings

- Oxy-ionic solutions at pH 5 showed antimicrobial performance comparable to chlorhexidine.
- Mildly acidic oxy-ionic solutions generally had better antimicrobial activity.
- The effectiveness of oxy-ionic solutions depends on their pH level.

## Abstract

Background

Chlorhexidine (CHX) is a widely used antimicrobial agent known for its ability to inhibit cariogenic bacteria, reduce plaque formation, neutralize acidity, and promote remineralization. However, the effectiveness of oxy-ionic solutions at different pH levels as an alternative antimicrobial treatment requires further exploration. This study aims to compare the antimicrobial effects of oxy-ionic solutions at various pH levels with those of CHX and fluoride.

Methodology

This study employed disc diffusion tests to measure the inhibition zone diameters of each solution and broth dilution assays to determine the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC).

Results

The oxy-ionic solutions exhibited varying degrees of antimicrobial effectiveness depending on their pH levels. The solution at pH 5 demonstrated the best antimicrobial performance among the oxy-ionic solutions, with inhibition zones comparable to those of CHX. The MIC and MBC values indicated that oxy-ionic solutions in mildly acidic environments generally resulted in better antimicrobial activity.

Conclusions

The study concludes that while CHX remains highly effective against cariogenic bacteria, oxy-ionic solutions, particularly at pH 5, offer a promising alternative. The antimicrobial efficacy of oxy-ionic solutions is influenced by their pH levels. Further research is recommended to explore the long-term effects and clinical applications of oxy-ionic solutions in maintaining oral health and preventing disease.