Dentistry
Researchers disrupt bacterial signals to steer dental plaque toward health
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Scientists at the University of Minnesota have shown that disrupting how oral bacteria communicate can shift dental plaque toward communities associated with better oral health, potentially opening the door to new ways of preventing gum disease without wiping out beneficial microbes.
A clinical study shows that arginine, a natural amino acid, can reduce acidity in dental biofilms and alter their structure to protect against cavities. Researchers at Aarhus University tested the treatment on participants with active tooth decay, finding promising results after four days. The findings suggest arginine could enhance cavity-prevention products like toothpaste.
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The Professional Regulation Commission has released the results of the November 2025 Licensure Examination for Dentists, with 1,282 out of 1,474 candidates passing.