Contact: Michael E. Newman
National Institute of Standards and Technology (NIST)
Caption: A calcium phosphate nanocomposite filling in a tooth. The nanocomposite can "smartly" release decay-fighting agents to buffer against acids produced by bacteria, and rebuild the lost tooth minerals by releasing ions into the mineral-deficient area of the tooth.
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Related news release: New nanocomposites may mean more durable tooth fillings