A logical organization covers the three main areas of the NBDHE: (1) the scientific basis for dental hygiene practice, (2) the provision of clinical dental hygiene services, and (3) community health and research principles.

NBDHE-style review questions offer practice and self-assessment relating to key content.

A new 350-question examination complete with Components A and B mimics the format of the NBDHE and is included in the back of the book and on the companion Evolve website; it provides answers, rationales, and a timer function.

Three additional timed simulated practice examinations are provided on the companion website for additional test-taking experience.

Case-based questions prepare you for the case studies and scenarios emphasized on the NBDHE.

An outline format allows for easy review and study.

Illustrations, diagrams, clinical photographs, and radiographs help in recognizing suspected pathologic processes and interpreting radiographs.

Tables and boxes summarize concepts and procedures.

Unique! Website tables in each chapter provide a quick reference to key sites for further research and study.

Expert authors are leading educators, researchers, and practitioners, each of whom has an in-depth knowledge of what it takes to succeed on the NBDHE.

1,450 NEW practice questions are added to this edition for a more complete review.

Updated content reflects changes and advances in areas such as infection control, pharmacology, digital imaging, and local anesthesia administration.

Expanded case studies promote critical thinking and provide practice with the complex cases that make up Component B of the examination.

NEW full-color photographs, illustrations, and radiographs accurately represent dental conditions.

Labeling and identification exercises are included, with electronic flashcards for added vocabulary practice.