**Selected for Doody’s Core Titles® 2024 with "Essential Purchase" designation in Dental Hygiene & Auxiliaries** The most comprehensive dental hygiene review book available, Darby’s Comprehensive Review of Dental Hygiene, 9th Edition offers an all-inclusive review to help you pass the National Board Dental Hygiene Examination (NBDHE) on the first try. Written by a team of expert editors and authors, this affordable, all-in-one review tool includes a wealth of chapter review questions, case studies, outline-style review of all exam topics, and four computerized practice exams that simulate the NBDHE test-taking experience. It’s everything you need for NBDHE success!