The sensation of oral discomfort experienced when using some mouthwashes, often described as a burning feeling, stems primarily from the presence of alcohol. Alcohol, typically ethanol, is included in certain formulations as a solvent to dissolve other ingredients and as a preservative. It also possesses antimicrobial properties, contributing to the product’s ability to kill bacteria. The concentration of alcohol in these mouthwashes can range significantly, and higher concentrations are more likely to cause a noticeable burning sensation.
While alcohol-based mouthwashes are effective at reducing oral bacteria and freshening breath, the drying effect of alcohol can disrupt the natural moisture balance in the mouth. Saliva plays a crucial role in maintaining oral health by neutralizing acids, remineralizing tooth enamel, and aiding in the digestion process. A reduction in saliva production can lead to increased vulnerability to cavities and other oral health issues. Historically, alcohol was a common ingredient in many oral hygiene products, but alternative formulations have been developed to mitigate its potentially adverse effects.