Tooth extraction involves completely removing a tooth from the mouth. People may require tooth extraction for many reasons, ranging from tooth decay to crowded teeth.
Gum disease is common and unpleasant, but, according to a growing body of evidence, it could also play a role in a surprising range of seemingly unrelated health problems.
Tooth enamel is the hardest substance in the human body, but, until now, no one knew how it managed to last a lifetime. The authors of a recent study conclude that enamel's secret lies in the imperfect alignment of crystals.