Used primarily in toothpaste formulations to prevent dental caries. It releases fluoride ions upon contact with saliva, which help remineralize tooth enamel and inhibit demineralization caused by acids produced by oral bacteria. Commonly found in over-the-counter fluoride toothpastes, especially in regions where sodium fluoride is less preferred due to stability or compatibility reasons. Also used in some mouth rinses and dental gels for cavity protection. Its stability in combination with other toothpaste ingredients, such as abrasives and detergents, makes it a favorable fluoride source in dentifrices.