Ozonated Water Preparation in Dental Offices: Estimation of Ozone Gas Solubility Ratio - Optimum Configurations and Practical Guidelines

Dentists wish to prepare enough volume to meet the dental office ozonated water consumption and to reach the desired concentration in the least amount of ozonation time. Several factors affect ozone gas mass transfer in water and the corresponding ozonated water concentration can be measured with analytical or direct in-line monitoring methods. An alternative, ozone gas solubility ratio (SR) may be used as a reference to predict ozonated water concentration. SR of 0.25 is often cited in the literature, but it can vary between 0.2 and 0.4 according to different ozonation configurations and parameters. A total of 70 tests were performed using different ozonation configurations which are commonly used in dental practice. Ozone concentration in water was measured and the SR was calculated. SR varied between 0.13 and 0.4. To our knowledge, this study has never been carried out before and aims to propose practical guidelines on selecting the optimum water ozonation configurations in dental practice, as well as to calculate their corresponding dissolved ozone concentration.