Hydroxyapatite toothpaste gains social media interest

Interest in fluoride-free toothpaste containing the mineral hydroxyapatite is increasing in the United States, driven largely by social media influencers. While some dental experts, including spokespersons for the American Dental Association, have characterized the ingredient as a new trend with limited or ambiguous clinical evidence, research indicates a longer history of use.

Hydroxyapatite has been a standard dental ingredient in Japan since the early 1970s and has extensive studies supporting its use across Europe. A 2014 study published in the Italian Journal of Odontostomatologic Sciences noted that nano-hydroxyapatite has significant remineralizing effects on enamel lesions and can be superior to conventional fluoride in certain restorative and preventive contexts.

Dentistry practitioners, such as Dr. Jin-Ho Phark from the University of Southern California, report that both patients and students are increasingly inquiring about the mineral. While fluoride remains the traditional standard for protecting teeth from cavity-causing bacteria, the growing curiosity regarding hydroxyapatite focuses on its potential for cavity protection, whitening, and enamel strengthening without the use of fluoride.