In this article, we review the clinical studies & scientific research that support the 6 probiotic strains included in Bristle’s Oral Health Probiotic. The Story Behind Creating an Oral Health Probiotic At Bristle, we are committed to a science-backed approach to caring for our bodies and helping individuals optimize their oral & overall health. One easy and effective way to improve your oral microbiome and health is by taking a probiotic specifically formulated for the mouth.