If you're interested in this check out Jeffrey Hillman's work at Oragenics[1]. Wired wrote about his work in 2002, which is how I found it[2]. SMarT is the amazing futuristic put dentists out of business almost tech[3], but there's a current 'ProBiotic' consumer version called ProBiora[4] sold as well, however that's a continuous delivery version. Far more profitable it would seem. Unfortunately, they discontinued FDA trials of SMarT for now.

1. https://www.oragenics.com/about/history 2. https://www.wired.com/2002/06/better-teeth-through-biochemis... 3. https://www.oragenics.com/technology-pipeline/lbp/smart 4. https://probiorahealth.com