Dental fillings without gaps

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The researchers initially investigate how the material reacts to stresses using a plastic filling in a standard geometry. Credit: Fraunhofer IWM
The researchers initially investigate how the material reacts to stresses, using a plastic filling in a standard geometry. Credit: Fraunhofer IWM
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Tooth cavities are usually closed with plastic fillings. However, the initially soft plastic shrinks as it hardens. The tension can cause gaps to appear between the tooth and the filling, encouraging more caries to form. For the first time, researchers have simulated this process.


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