Mosby's Comprehensive Review of Dental Hygiene is a trusted review resource designed to help dental hygiene students prepare for -- and pass -- the national exam. This comprehensive tool follows the format and content of the exam, providing practice questions and answers, as well as an easy-to-use content review in an outline format. In the up-to-date 5th Edition, users will find new case studies with questions, expanded topics, websites for further reference, and a NEW CD-ROM offering an electronic simulated exam for even more practice.