Abstract
This is an interim report of a three-year project on the effect of an ammoniated dentifrice with a high urea content on the caries prophylaxis. A marked reduction in caries experience was observed in the test dentifrice group. The greatest reduction occurred in previously noncarious permanent teeth, where a 60 per cent reduction in caries incidence in the test group versus the control group was observed. The caries reduction in all teeth, both deciduous and permanent and carious and noncarious, varied between 50 per cent and 60 per cent. The reduction in caries incidence observed was obtained with the customary practice of twice daily brushing on arising and on retiring.
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