Evolve Resources for Periodontology for the Dental Hygienist, 4th Edition

Dorothy A. Perry, RDH, PhD, Associate Professor and Vice Chair, Department of Preventive and Resorative Dental Sciences, Chair, Division of Dental Hygiene, School of Dentistry, University of California, San Francisco, San Francisco, CA and Gwendolyn Essex, RDH, RDHAP, MS, EdD, Associate Dean of Academic Affairs and Professor, College of Dental Medicine, California Northstate University, Elk Grove, California, USA