It's interesting how this probiotic is time released. I say this because bacteria builds up in your mouth or needs attention throughout the day or night.
It's challenging to find out which rare bacteria yoiu might have in your mouth which may cause plaque biofilms... unless you try a mouth study like ubiome.com, which I tried. This was awhile ago, but it showed that I had a rare bacteria (and a lot of it) that causes periodontal disease and is resistant to many Antibiotics . However, the website doesn't explain the pros or cons of each bacteria...you need to research it yourself.
I don't know if this rare bacteria is related to EC or not. Time-released probiotics might hint at it, though.