I’ve found out the following things:<\/p>\n\n\n\n
If I want the best fluoride action, I should get soluble sodium fluoride, and I should not use calcium compounds as the abrasive. This is why the toothpaste tablets I buy from the store have cellulose and silicate instead of calcium carbonate, I think. <\/p>\n\n\n\n
I could spend \u20ac20 to get 100 grams of sodium fluoride which would last me a lifetime, but I’d prefer to not have so much of a toxic compound in a drawer so I’m continuing to look for smaller quantities.<\/p>\n\n\n\n
Cellulose (microcrystalline cellulose, MCC, E460): this is also less abrasive than most other most other toothpaste binders. I can’t find a good source for buying it yet.<\/p>\n\n\n\n
Sources for what ingredients to use: this study<\/a>, this site<\/a><\/p>\n\n\n\n Mild abrasives<\/p>\n\n\n\n Thickening agents<\/p>\n\n\n\n Other stuff:<\/p>\n\n\n\n I’ve decided that calcium carbonate base would still be the easiest, even if it makes the fluoride less effective. Many toothpaste products still combine these two. plus water, approx. 20%<\/a><\/p>\n\n\n\n With each tablet being about 0.3<\/a> to 0.5 g<\/a>, this set of ingredients would make me about 3000 tablets for \u20ac48.44 (\u20ac0.016 each), compared to about \u20ac0.042 each at the store. Including the \u20ac5.99<\/a> silicone mould the break even point for 1 person is about 2 years worth of toothpaste tablets (~1500). <\/p>\n\n\n\n The surfactants I only need very little of, and I’m already buying them for other products, so I guess the total cost for this project is a little lower. The zinc oxide and sodium fluoride I will have way too much of, but the calcium carbonate, sodium bicarbonate and xylitol are easy to get more of so if I really wanted to I could make 20,000 tablets for around \u20ac100 (\u20ac0.005 each) which would last me about 27 years. <\/p>\n","protected":false},"excerpt":{"rendered":" I’ve found out the following things: If I want the best fluoride action, I should get soluble sodium fluoride, and I should not use calcium compounds as the abrasive. This is why the toothpaste tablets I buy from the store have cellulose and silicate instead of calcium carbonate, I think. I could spend \u20ac20 to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24,28],"tags":[],"class_list":["post-464","post","type-post","status-publish","format-standard","hentry","category-chemistry","category-toothpaste"],"_links":{"self":[{"href":"https:\/\/invar.nl\/index.php?rest_route=\/wp\/v2\/posts\/464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/invar.nl\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/invar.nl\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/invar.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/invar.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=464"}],"version-history":[{"count":21,"href":"https:\/\/invar.nl\/index.php?rest_route=\/wp\/v2\/posts\/464\/revisions"}],"predecessor-version":[{"id":856,"href":"https:\/\/invar.nl\/index.php?rest_route=\/wp\/v2\/posts\/464\/revisions\/856"}],"wp:attachment":[{"href":"https:\/\/invar.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/invar.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/invar.nl\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
\n
sodium hexametaphosphate<\/s>. Edit: sodium hexametaphosphate (SHMP) is not used as abrasive, but as a soluble active ingredient that helps prevent staining and tartar – best used around 0.25%<\/a> because then it also prevents tooth erosion, with possible negative effects.<\/em><\/li>\n<\/ul>\n<\/li>\n\n\n\n\n
\n
\n
\n
Total formulation:<\/p>\n\n\n\n\n