Nancy Dewhirst, RDH, BS graduated from the University of Southern California, practiced dental hygiene for 20 years and is adjunct dental hygiene faculty at West Coast University. Ms. Dewhirst is consistently listed as one of the nation’s leaders in CE, presents over 80 seminars a year, is featured at major US and Canadian dental conferences, and is a member of the California Dental Association Speakers Bureau. She has had many articles published in dental peer-reviewed journals and has contributed to dental textbooks.