Which toothpaste is better

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Everyone wants that his or her children have good teeth. Perfect teeth means  healthier lifestyle  and can even help find a good job in the future. But what should one bear in mind while choosing a toothpaste? Researchers from the Fraunhofer Institute for Mechanics of Materials IWM in Halle and the Microtribology Centre µTC in Karlsruhe have developed a new tests for toothpastes.

Cleaning particles though being the most important component of toothpastes, could have a strong abrasive effect and damage tooth enamel. That is why the German Dental Association recommends to use less abrasive toothpaste for the people with exposed teeth.

The researchers at the Fraunhofer Institute for Mechanics of Materials have invented a different method to test toothpastes. «Our new approach enables us to determine realistic abrasion rates and characterize the interaction between brush, enamel and toothpaste. What's more, our tests are less laborious than the time-intensive radiotracer procedures carried out by only a handful of laboratories worldwide», explaines Dr. Andreas Kiesow — one of the authors of the research.

The new tests also show how different shapes of toothbrush clean the surface of the teeth and which is an ideal shape to be designed. The researchers at the  at Fraunhofer Institute for Mechanics of Materials can now support manufacturers of toothpastes and also manufactures of toothbrushes.

«Our findings reveal that the RDA value of toothpastes correlates with the depth of abrasion; the higher the value, the greater the abrasion. By analyzing the friction value we also identified a clear relationship between the friction behaviors of the bristle on the dental enamel and the abrasiveness of the toothpaste», says Andreas Kiesow.