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NBDHE (dental hygiene boards) preparation

NBDHE Review

76 lessons · 204 practice questions — Board-style review for the National Board Dental Hygiene Examination: scientific basis, clinical services, community health and case-based reasoning, each with an ELI-10 explanation.

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Anatomy and Physiology (Scientific Basis)8 lessons

Chapter page

  1. Head and Neck Overview: Skull Landmarks, Mandible, Maxilla, and TMJ
  2. Muscles of Mastication
  3. Muscles of Facial Expression and the Facial Nerve (CN VII)
  4. The Trigeminal Nerve (CN V)
  5. The Facial Nerve (CN VII): Anatomy and Clinical Correlates
  6. Blood Supply to the Head and Neck: Oral and Dental Significance
  7. Salivary Glands: Anatomy, Histology, and Function
  8. Tooth Morphology: Primary and Permanent Dentition

Microbiology and Immunology (Scientific Basis)4 lessons

Chapter page

  1. Dental Plaque Biofilm: Formation, Structure, and Pathogenicity
  2. Caries Microbiology: The Multifactorial Disease Process
  3. Periodontal Microbiology: Polymicrobial Dysbiosis
  4. Immunology for Dental Hygiene: Innate and Adaptive Immunity

Oral Pathology (Scientific Basis)5 lessons

Chapter page

  1. Oral Lesion Description and Diagnostic Approach
  2. Normal Oral Variants: Distinguishing Common Findings from Pathology
  3. Infectious Oral Lesions: Viral, Fungal, and Other Infections
  4. White and Red Oral Lesions: Keratotic, Erythematous, and Ulcerative Conditions
  5. Cysts, Odontogenic Tumors, and Oral Manifestations of Systemic Disease

Pharmacology (Scientific Basis)9 lessons

Chapter page

  1. Autonomic Pharmacology: Sympathetic and Parasympathetic Systems
  2. Local Anesthetics: Pharmacology and Clinical Considerations
  3. Local Anesthetic Calculations and Vasoconstrictor Limits
  4. Antibiotics in Dentistry: Mechanisms, Spectra, and Clinical Use
  5. Antibiotic Prophylaxis in Dentistry: AHA/ADA Guidelines
  6. Analgesics in Dentistry: Non-Opioid and Opioid Principles
  7. Cardiovascular Medications and Oral Health Implications
  8. Drug-Induced Xerostomia: Medications, Mechanisms, and Dental Consequences
  9. Nutrition, Biochemistry, and Oral Health

Care Planning (Provision of Clinical Dental Hygiene Services)2 lessons

Chapter page

  1. Diagnosis and Care Planning
  2. Informed Consent in Dental Hygiene Practice

Medical Emergencies (Provision of Clinical Dental Hygiene Services)4 lessons

Chapter page

  1. Medical Emergencies in the Dental Setting: Overview and General Approach
  2. Syncope: Recognition and Emergency Management
  3. Anaphylaxis: Recognition and Emergency Management
  4. Angina Pectoris vs. Myocardial Infarction: Recognition and Emergency Response

Patient Assessment (Provision of Clinical Dental Hygiene Services)5 lessons

Chapter page

  1. Process of Care: ADPIE Framework
  2. Medical History Review and Assessment
  3. Vital Signs: Measurement and Interpretation
  4. ASA Physical Status Classification System
  5. Extraoral and Intraoral Examination

Periodontology (Provision of Clinical Dental Hygiene Services)7 lessons

Chapter page

  1. Periodontal Assessment: Clinical Parameters
  2. Clinical Attachment Loss: Deep Dive with Worked Examples
  3. Periodontitis Classification: AAP/EFP Staging and Grading
  4. Furcation Involvement and Tooth Mobility
  5. Scaling and Root Debridement: Principles and Re-evaluation
  6. Hand Instrumentation for Periodontal Therapy
  7. Ultrasonic and Sonic Instrumentation

Preventive Agents (Provision of Clinical Dental Hygiene Services)4 lessons

Chapter page

  1. Fluoride: Mechanisms, Delivery, and Clinical Applications
  2. Fluoride Toxicity: Acute and Chronic
  3. Pit and Fissure Sealants: Indications, Technique, and Evaluation
  4. Oral Hygiene: Methods, Assessment, and Patient Education

Professional Responsibility (Provision of Clinical Dental Hygiene Services)4 lessons

Chapter page

  1. Ethics in Dental Hygiene Practice
  2. Jurisprudence and Legal Concepts in Dental Hygiene
  3. HIPAA: Privacy, Security, and Patient Rights
  4. OSHA and Infection Control in Dental Settings

Radiology (Provision of Clinical Dental Hygiene Services)4 lessons

Chapter page

  1. Radiology Physics: X-Ray Production and Properties
  2. Radiation Biology and Protection
  3. Radiographic Errors: Cause, Appearance, and Correction
  4. Radiographic Landmarks: Normal Anatomy and Pathology Mimics

Supportive Treatment (Provision of Clinical Dental Hygiene Services)2 lessons

Chapter page

  1. Dental Materials: Properties, Manipulation, and Clinical Indications
  2. Dentinal Hypersensitivity: Etiology, Diagnosis, and Management

Biostatistics (Community Health and Research Principles)2 lessons

Chapter page

  1. Biostatistics I: Central Tendency, Dispersion, and the Normal Distribution
  2. Biostatistics II: Sensitivity, Specificity, Correlation, and p-Value Interpretation

Dental Indices (Community Health and Research Principles)3 lessons

Chapter page

  1. DMFT and DMFS Indices (with DEF for Primary Dentition)
  2. OHI-S (Simplified Oral Hygiene Index) and Gingival Index
  3. Periodontal Indices: CPI, PSR, and Reversible vs. Irreversible Measures

Epidemiology (Community Health and Research Principles)1 lesson

Chapter page

  1. Research Study Designs in Epidemiology

Public Health (Community Health and Research Principles)3 lessons

Chapter page

  1. Public Health Core Functions and Oral Health Programs
  2. Community Water Fluoridation
  3. Community Oral Health Needs Assessment

Research Methodology (Community Health and Research Principles)1 lesson

Chapter page

  1. Research Methodology: Variables, Blinding, and Allocation Concealment

Case-Based Review8 lessons

Chapter page

  1. Case-Based Review Strategy: A Systematic Approach to NBDHE Case Questions
  2. Case Study: Antibiotic Prophylaxis — Applying AHA/ADA Guidelines
  3. Case Study: Geriatric Patient with Polypharmacy and Complex Needs
  4. Case Study: Medically Compromised Patient — Type 2 Diabetes and Hypertension
  5. Case Study: Pediatric Patient — Early Childhood Caries and Mixed Dentition
  6. Case Study: Periodontal Patient — Stage III, Grade C Periodontitis
  7. Case Study: Pregnant Patient — Second Trimester with Pregnancy Gingivitis
  8. Case Study: Patient with Mobility Limitation — Person-Centered Care and Adaptive Strategies