i remember reading about "lumina probiotic" Has anyone done research on it since, reviewing thier claims ?

their claims on their website:

replaces S. mutans, alters oral microbiome, reduces acid via ethanol metabolism, produces antibiotic, freshens breath, brightens teeth, lasts decades. etc

i am very skeptical of it

I recall they were offering a few people mail-in swabs to test if the colonization had taken hold, but haven’t read any follow-up.