National Institute of Dental Research (NIDR): One of the National Institutes of Health in the U.S., the NIDR is the NIH for dental and other craniofacial diseases. NIDRÆs mission is, in formal terms, to ôprovide leadership for a national research program designed to understand, treat, and ultimately prevent the infectious and inherited craniofacial-oral-dental diseases and disorders that compromise millions of human lives.ö