What are the functions of sodium bicarbonate in toothpaste?

Sodium bicarbonate, commonly known as baking soda, serves multiple functions in toothpaste. It acts as a mild abrasive, helping to remove plaque and surface stains from teeth without damaging enamel. Additionally, it neutralizes acids in the mouth, which can help reduce the risk of cavities and maintain a balanced pH. Furthermore, its alkaline properties can contribute to freshening breath.