Dear Heloise: I read your daily hints in the Lima News, and occasionally, people suggest cutting open toothpaste tubes to get every little bit out of the tube. That can be messy, and really is not ...

“Hydroxyapatite (HAp) is the main component of enamel and one of the most studied biomaterials in the medical and dental field,” Dr. Jonathan B. Levine, the chief dental officer of Lenny Kravitz’s ...