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, Clinical Professor, Preventive and Restorative Dental Sciences School of Dentistry University of California, San Francisco, San Francisco, California