A potentially important aid to oral health,
Lactobacillus Salivarius is a very inexpensive probiotic and readily available.
Its ability to kill the pathogens that cause gingivitis and periodontal disease is significant.
it is a safe probiotic to use.
According to David Lester Straight, if one were to empty a capsule and push the powder between the teeth and gums, it would be a very effective dentifrice.

Only people mentioned by @Oleendee in this post can reply

In response Lydia Fahsholtz to her Publication

Many different brands and most are very inexpensive.