Caries pyrophosphate

Most of the world production of phosphates goes into fertilizer, but some is used as detergent builders (Section 7.7). In toothpastes, calcium pyrophosphate has proved effective as a mild abrasive in eliminating tartar, while Na2[FP03], made by reaction of NaF with cyclic sodium metaphosphates (NaP03), is widely used as a fluoridating agent to suppress dental caries (Section 12.3). A minor amount of rock phosphate is used to make elemental phosphorus by reduction with coke in the presence of silica in the electric furnace (see Section 17.7) ... 

This dentifrice contains 3.4% tetrasodium pyrophosphate and 1.37 /o disodium dihydrogen pyrophosphate to reduce calculus. Also, 0.243 /o sodium fluoride is included for caries reduction and prevention. It was the first calculus-reducing dentifrice introduced into the United States. On the basis of various clinical studies, a reduction of 30-40%i can be expected. It has also been shown to significantly reduce the tooth staining seen in some patients who use chlorhexidine. 

This mouthrinse provides 1.6%i ionic pyrophosphate from disodium and tetrasodium pyrophosphate to act against calculus formation and 0.05%i sodium fluoride as a caries-reducing agent. Data on the extent of calculus and caries reduction were not available when this article was written because the product was in test market. 

This product contains 5%i tetrasodium pyrophosphate and a polymeric fatty acid with the company-patented name of Gantrez as the calculus-reducing agents. Also, 0.243%) sodium fluoride is included for caries reduction... 

This mouthrinse contains tetrasodium pyrophosphate and tetrapotassium pyrophosphate, which provide P/o ionic pyrophosphate. It also contains 0.02% fluoride. Calculus reduction has been reported to be 35-40%o with twice-a-day rinsing, with no claim made for caries reduction. 

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