Also interested in this, but haven't tried it myself. Apparently NSF (Nano Silver Fluoride) is more commonly in non-western countries. They have a video with

Also interested in this, but haven't tried it myself. Apparently NSF (Nano Silver Fluoride) is more commonly in non-western countries. They have a video with some more info here: https://pt.fourthievesvinegar.org/w/9aa66b49-2ec5-497f-9f49-115e36549511 https://pt.fourthievesvinegar.org/w/9aa66b49-2ec5-497f-9f49-... And apparently the use of NSF does have a bunch of research papers written about it: https://www.researchgate.net/profile/Amol-Patil-43/publication/379188980_Nano-Silver_Fluoride_in_Preventive_Dentistry_A_Literature_Review/links/65fe7016d3a085514243b25e/Nano-Silver-Fluoride-in-Preventive-Dentistry-A-Literature-Review.pdf https://www.researchgate.net/profile/Amol-Patil-43/publicati...