Cavity

  • ​Getting a filling isn't always the end of a tooth's cavity problems. Sometimes, bacteria is able to get down between the filling and the surface of the tooth, causing another cavity to occur. A new antibacterial dental restorative material, however, could help keep that from happening.
  • We owe our lives to our immune systems – without it, even the most minor of sniffles could be fatal. But the immune system makes mistakes too. Now, researchers at the University of Toronto have found that cavities might also be collateral damage from an overzealous immune system.
  • When you get a cavity filled, you may just assume that the fix will last indefinitely. In fact, though, fillings do have a limited lifespan. That said, a new dental material – and a new adhesive to keep it inside the tooth – could allow fillings to last longer than ever before.
  • ​We've already heard about a probiotic pill, an Alzheimer's-treatment drug and a mineral-replacing toothpaste that could treat or even prevent cavities. Now, scientists at the University of Washington have developed a natural product of their own that may do the job.
  • ​When you get a cavity filled, you certainly don't want plaque growing on the filling – it could cause the tooth to decay all over again. That's why scientists have evaluated a new dental composite material that not only kills bacteria on contact, but that also stands up to everyday wear and tear.
  • ​If your teeth are sensitive to hot and/or cold liquids and foods, it's likely because their protective outer layer of enamel is worn away. While there are treatments for the problem, they tend not be very long-lasting. There could be new hope, however, thanks partially to a green tea extract.
  • ​There are currently two main ways in which dentists look for cavities: visual inspections and x-rays. Now, technology being developed at Toronto's York University could provide a more effective alternative.
  • Dental cavities are one of those things where the sooner you catch them, the better. Dentists' visual inspections and x-rays certainly help, but a new hand-held device is designed to detect them even earlier. It's called the Ortek ECD, and it hunts cavities using electricity.
  • You might think that with today's composite dental fillings, once you get a tooth filled, it's good for life. According to Prof. Jamie Kruzic, however, "almost all fillings will eventually fail." That's why he's part of a team that's looking into a longer-lasting filling material: bioactive glass.