Enamel, the hardest and most mineral-rich substance in the human body, covers and protects our teeth. But in one of every 10 people this layer appears defective, failing to protect the teeth properly.

Viking Age teeth from Varnhem bear witness to surprisingly advanced dentistry. This has been shown in a study carried out at the University of Gothenburg in Sweden. The study examined 3,293 teeth from 171 individuals among the Viking Age population of Varnhem in Västergötland, Sweden.

A new study by investigators from Brigham and Women’s Hospital (BWH) in the US and Harvard Pilgrim Health Care Institute examined whether daily toothbrushing among hospitalised patients is associated with lower rates of hospital-acquired pneumonia and other outcomes.