Bio patch can regrow bone for dental implants and craniofacial defects  Researchers at the University of Iowa have created a bio patch to regenerate missing or damaged bone by putting DNA into a nano-sized particle that delivers bone-producing instructions directly into cells via genes. “This is the first study to use plasmid DNA encoding platelet derived growth factor (PDGF) for bone regeneration applications,” researcher Aliasger K. Salem, Ph.D. — a … more…