Lumina Probiotic: strain of bacteria that prevents cavities (luminaprobiotic.com)

I'm very curious if this works. I'd like to have this product, but so far it's hard to find independent assessments and (long term) side effects as well are unknown. Also I think it's unclear if a one time treatment is enough or if it has to be reapplied regularly (e.g. after a professional dental cleaning).