National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test

Browse all practice questions for the National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test. Search by topic, open any question and review its full explanation, then test yourself in the practice quiz.

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A Closer Look at Gram-Negative Periodontal PathogensWhat is the main characteristic of gram-negative periodontal pathogens?Bone Augmentation: An Essential Element of ImplantologyWhere does the bone for a bone augmentation typically come from in an implantation procedure?Choosing the Right Brushing Technique for Patients with Limited Hand FunctionWhich brushing method is least likely to suit a patient with limited hand function?Choosing the Right Instrument for Dental Implant CareWhich instrument is designed to reduce trauma to the surfaces of dental implants during cleaning?Choosing the Right Toothbrush for Optimal Oral HealthThe patient shows some moderate marginal inflammation and plaque accumulation. What type of toothbrush should be recommended?Cleft Palate: Understanding the Condition and Its ImplicationsWhich condition is characterized by the incomplete fusion of the palatine processes?Cracking the Code on Sialoliths: Understanding Wharton's Duct in Dental ExamsWhich part of a dental examination is crucial for detecting the presence of sialoliths?Discovering the Essentials of Overdentures for Your NBDHE PreparationWhich of the following is a characteristic of an overdenture?Discovering the Link Between Epstein-Barr Virus and Oral ConditionsWhat oral condition is associated with the Epstein-Barr virus?Discovering the Role of Ingredients in Desensitizing ToothpasteWhich of the following is not an active ingredient in desensitizing toothpaste?Exploring the Occipital Bone: The Backbone of Your SkullWhich cranial bone is positioned as the single bone in the most posterior region of the skull?Flossing Techniques: What You Need to Know for Effective Oral HygieneWhich flossing technique is considered improper and should be corrected during oral hygiene education?Fluoride Treatment: The Key to Stronger Teeth and Fewer CavitiesWhich is the primary purpose of fluoride treatment?Gingival Hypoplasia: An Uncommon Outcome of Orthodontic TreatmentWhich is not a common manifestation of orthodontic treatment?Gingivitis: Understanding Thickened or Inflamed GingivaWhat condition is characterized by a thickened or inflamed gingiva?Master the Roll Method: A Key Technique for Dental Hygiene SuccessWhich technique involves a brushing movement that goes apically to the gingiva and then over the tooth?Mastering Bidigital Palpation: A Key Technique for Dental HygienistsWhat palpation technique involves using the fingers and thumbs of both hands during an extraoral exam?Mastering Bite-Wing X-Rays: Your Guide to Interproximal VisualizationWhich type of x-ray is primarily used for visualizing the interproximal areas of teeth?Mastering Curette Sharpening Techniques for Dental HygienistsA flat stone may be used to sharpen a curette by hand. The face of the curette should be at what angle to the stone?Mastering Dental Hygiene: The Power of Two-Tone Disclosing SolutionsWhat type of agent is used to stain new and mature plaque in red and blue tints during oral hygiene instruction?Mastering Fluoride Dosage for Young Children: A Guide for Dental HygienistsWhat dosage of fluoride is recommended for children under 6 years in non-fluoridated areas?Mastering Fluoride Gel Application for Dental Hygiene SuccessWhat is the maximum amount of gel that should be placed in a fluoride tray for application?Mastering Light Curing: Essential Knowledge for Dental HygienistsLight curing typically occurs within ________.Mastering Metronidazole for Treating Acute Necrotizing Ulcerative GingivitisWhich drug is commonly used to treat acute necrotizing ulcerative gingivitis?Mastering Oral Hygiene: The Best Brushing Technique for Patients with BracesWhich brushing technique is recommended for patients with braces?Mastering Periodontal Probing: The Essential Tool for Dental HygienistsWhich instrument is primarily used for probing periodontal pockets?Mastering Radiograph Clarity: The Key to Minimizing Image MagnificationTo minimize image magnification in radiographs, which type of object-to-film distance should be used?Mastering Root Caries Diagnosis: Unlocking Better Oral HealthWhat is an expected outcome of properly diagnosing root caries?Mastering Supragingival Calculus Ratings for Effective Dental HygieneIf a patient has supragingival calculus covering more than 1/3 but less than 2/3 of the exposed teeth, what calculus rating should the hygienist assign?Mastering the Bass Technique: Your Key to Effective Tooth BrushingWhat is the most widely used and accepted tooth brushing technique?Mastering the Characteristics of Periodontal Pathogens in Dental HygieneMost periodontal pathogens are characterized as which of the following?Mastering the Charter's Brushing Technique for Effective Dental HygieneWhat brushing method involves positioning the bristles at a 45-degree angle towards the occlusal surface of the tooth?Mastering the Cleaning of Removable Prostheses for Optimal Oral HealthWhat is the recommended way to clean a removable prosthesis in a dental clinic?Mastering the Hypoglossal Nerve: Your Key to Understanding Tongue ControlWhat nerve supplies the intrinsic muscles of the tongue?Mastering the NBDHE: Understanding Diagnostic Methods for Smooth Surface LesionsWhich diagnostic method is generally inappropriate for assessing coronal smooth surface lesions?Mastering the Roll Brushing Technique for Optimal Gum HealthWhat brushing technique involves the bristles aimed toward the gingival margin and rolling the brush toward the occlusal surface?Mastering the Roll Method in Dental HygieneWhat method is demonstrated by placing bristles at the attached gingiva and sweeping them up apically?Mastering the Roll Technique for Excellent Oral HygieneWhile reviewing brushing techniques, the patient exhibits the method that she uses. She brushes with the bristles aimed toward the gingival margin and then rolls the brush toward the occlusal surface. What method is this?Mastering the Trigeminal Nerve for Dental Hygiene SuccessThe trigeminal nerve is responsible for innervating which of the following structures?Mastering X-ray Duplication: Avoiding Common PitfallsWhen duplicating x-rays manually, what is the most likely error if the images appear dark?Mastering Your Skills: The Ideal Angle for Calculus RemovalWhat is the ideal angle for instrumentation during calculus removal?Navigating Drug Choices for Site-Specific Therapy in Dental HygieneWhat drug is typically used for a site-specific therapy involving an implanted cord to be removed after 7-10 days?Polishing Teeth: Understanding Enamel Removal for Dental HygienistsPolishing the teeth for at least how many minutes with pumice may remove 3-4 micrometers of enamel?Protective Gear for Softball: Why Mouthguards Are a MustWhat can a hygienist suggest to help protect a patient’s orofacial area from trauma while playing softball?Recognizing Oral Symptoms That Signal Systemic Health IssuesWhen examining a patient, which symptom might indicate possible systemic health issues?Sharpening Scalers: Master the Right Angle for Dental Hygiene SuccessDuring the appointment, the hygienist needs to sharpen a different scaler. The face of an instrument should be at what angle to the sharpening stone?Should Smokers Use Alcohol-Based Mouth Rinses?Is it advisable for smokers to use alcohol-based mouth rinses?The Best Methods for Evaluating Periodontal DiseaseWhat procedure is most effective for evaluating periodontal disease?The Critical Development of Cleft Lip: Insights for Dental HygienistsWhat occurs when the globular process fails to fuse with the maxillary process during the first trimester of pregnancy?The Critical pH Level for Tooth Enamel Decalcification ExploredAt which pH level does decalcification of tooth enamel begin?The Crucial Role of Vitamin C in Maintaining Periodontal HealthWhich vitamin deficiency is often linked to immune system dysfunction in periodontal disease?The Hidden Impact of Root Hypersensitivity on Dental ProceduresWhat impact does root hypersensitivity have on dental procedures?The Importance of Calculating the deft Index in Pediatric DentistryWhat is the main purpose of calculating a deft index?The Importance of Etching in Dental Bonding: What Every Hygienist Should KnowIf a dentist is placing a bonded filling, she will do which of the following to ensure the filling bonds to the tooth?The Importance of Understanding Effective Dose in Dental HygieneWhat is the term for the dose that produces 50% of the maximum response in 50% of subjects?The Key Role of Vitamin C in Periodontal HealthWhich vitamin is crucial for collagen synthesis and is essential for periodontal health?The Mighty Enamel: Tooth's Toughest DefenderWhat provides the hardest layer of protection for a tooth?The Multifunctional Wonders of Saliva for Dental HygieneWhat is the primary function of saliva in oral health?The Right Way to Floss: Mastering the "C" Shape TechniqueWhat common oral hygiene practice involves the correct method for flossing teeth?The Role of Cellular Cementum in Reducing Tooth HypersensitivityHypersensitivity of a root lessens as the tooth forms which of the following?Understanding Acute Necrotizing Ulcerative Gingivitis: First Steps in TreatmentWhat is typically the first step in treatment for acute necrotizing ulcerative gingivitis?Understanding ADHD: The Misconceptions About Diagnosis in GirlsWhich of the following is NOT true in regard to ADHD?Understanding ADHD: The Myths and RealitiesWhich statement is NOT true regarding ADHD?Understanding Air Polisher Use in Dental HygieneWhich patient condition would NOT contraindicate the use of an air polisher?Understanding Alginate: The Irreversible Hydrocolloid Essential for Dental ImpressionsWhat type of dental material is alginate categorized as?Understanding Ameloblasts: The Builders of EnamelWhat type of attachments are found in the enamel-forming cells known as ameloblasts?Understanding Anaerobes: The Microbes That Dread OxygenWhich type of microbe cannot perform or may be destroyed in the presence of oxygen?Understanding Bilateral Cleft Lip and its Developmental CausesWhat processes fail to fuse during fetal development resulting in a bilateral cleft lip?Understanding Black Hairy Tongue: Causes and EffectsWhat condition occurs when the normal shedding of epithelium in the tongue does not take place?Understanding Blood Pressure Readings: What the First Number Tells YouIn a blood pressure reading, what does the first number represent?Understanding Blood Pressure: Systolic vs. Diastolic ExplainedWhat does the first number in a blood pressure reading indicate?Understanding Calculus Ratings in Dental Hygiene AssessmentsWhat type of calculus rating corresponds with the presence of calculus covering 2/3 of the exposed teeth?Understanding Chronic Gingival Inflammation: Key Indicators for Dental HygienistsWhich signs are indicators of chronic gingival inflammation?Understanding Cleft Lip: The Role of Facial DevelopmentCleft lip can be a result of failure in which developmental process?Understanding Cleft Lips: Key Insights for Dental Hygiene ProfessionalsThe patient was born with a bilateral cleft lip on the right side. A cleft in this area occurs when what processes fail to fuse during fetal development?Understanding Dementia and the Role of Aricept in TreatmentWhat medical condition is associated with a prescription of Aricept 10 mg/day?Understanding Dental Caries: The Science Behind CavitiesA dental carie is another name for a _____________.Understanding Dentigerous Cysts: Key Insights for Dental HygienistsWhat is a Dentigerous cyst?Understanding Desquamative Gingivitis: Allergic Reactions UnveiledWhich condition can be a result of an allergic reaction?Understanding Diabetic Emergencies: Quick Responses to Low Blood SugarWhat is the recommended action for a diabetic patient who experiences headache and shakiness after taking insulin?Understanding Diagnostic Tools for Smooth Surface LesionsWhich diagnostic method might not be suitable for evaluating coronal smooth surface lesions?Understanding Diastema between Teeth #8 and #9 in Dental NotationWhat denotes a diastema between teeth #8 and #9 in dental notation?Understanding Diastema: Visual Indicators for Dental HygieneA diastema between teeth #8 and #9 is indicated by what visual marker?Understanding Diastolic Pressure: The Relaxation Phase of the Cardiac CycleWhich blood pressure reading component is associated with the relaxation phase of the cardiac cycle?Understanding Dilaceration: A Key Concept for Dental Hygiene StudentsWhat is the term for an abnormal curvature of the roots of a tooth that can affect x-ray quality?Understanding Discrete Data: A Key Concept for Dental HygienistsWhat type of data is classified as discrete data?Understanding Endosteal Implants: The Backbone of Dental RestorationsWhat is the most common type of dental implant?Understanding Expressed Consent in Dental Hygiene: What You Need to KnowWhat type of consent is given in writing or verbally?Understanding External Motivation in Dental Hygiene PracticeWhat type of motivation involves the promise of a reward?Understanding Extraoral X-Rays: A Key Component of Dental HygieneWhat type of x-ray is defined as extraoral, taken outside the mouth to evaluate a joint?Understanding Extrinsic Stains: A Key Concept for Future Dental HygienistsWhat is a common feature of extrinsic stains on teeth?Understanding Extrinsic Stains: The Green Stain on Anterior TeethWhat type of stain is characterized by a green stain on the facial surface of the upper anterior teeth?Understanding Fluoride Dosage for Dental Hygiene: Key Insights for StudentsFor which age group is 1.0mg fluoride dosage recommended?Understanding Fluoride Supplementation for Kids: A Guide for Future Dental HygienistsWhat is the recommended weekly supplemental dosage of fluoride for a patient aged 6-16 living in a non-fluoridated area?Understanding Fluoride: Your Guide to Dental Hygiene EssentialsFluoride is typically introduced in all of the following ways except by ____________?Understanding Fluorosis: The Impacts of Excessive Fluoride ExposureWhen exposed to high levels of fluoride, which dental condition can develop?Understanding Gingival Health: The Realities of Periodontal DiseaseWhich of the following describes the gingival condition associated with periodontal disease?Understanding Healthy Gingiva: The 3mm Probing Depth StandardWhat is the normal probing depth for healthy gingiva?Understanding Healthy Gum Tissue: Key Characteristics for Dental HygieneWhat is a key characteristic of healthy gum tissue?Understanding Hydrogen Peroxide Use in Dental HygieneWhich of the following is NOT a contraindication for the regular use of hydrogen peroxide?Understanding Impulsivity and Its Impact on Skill Acquisition in ADHDWhat condition can make it difficult for individuals to acquire new skills, potentially related to ADHD?Understanding Linea Alba: A Common Oral LesionWhat is the most appropriate name for a bilateral, keratinized lesion shaped like a white line found on the buccal mucosa?Understanding Low P-Values and Their Impact on Hypothesis TestingIn statistical terms, what does a low p-value indicate about a null hypothesis?Understanding Major Salivary Glands: A Key To Dental Hygiene SuccessWhich of the following is not a major salivary gland?Understanding Mandibular Second Bicuspids: Eruption Age and SignificanceAt what age do mandibular second bicuspids typically erupt?Understanding Mandibular Second Bicuspids: Eruption and DevelopmentAt what age do mandibular second bicuspids typically erupt?Understanding Maslow's Hierarchy: The Foundation of Human Needs in Dental HygieneIn Maslow's Hierarchy of Needs, what is the most fundamental need that must be met?Understanding Pedicle Grafts for Dental Hygiene FundamentalsA pedicle graft uses a flap of tissue from which part of the mouth?Understanding Periapical Abscesses: What They Reveal About Tooth HealthWhen a periapical abscess forms, it indicates what?Understanding Periodontal Disease: The Consequences of Plaque and Calculus BuildupWhich oral condition results from excessive buildup of plaque and calculus?Understanding Periodontal Disease: The Impact on the Periodontal LigamentWhich structure is primarily affected by periodontal disease?Understanding pH Levels and Demineralization in Dental HygieneAt which pH do root structures begin demineralization?Understanding Preceptorship: Key Training for Future Dental HygienistsTraining dental personnel to perform dental hygiene duties is known as ___________.Understanding Radiographic Intensifying Screens in Dental HygieneRadiographic intensifying screens are used for?Understanding Regulations for PID and Tubehead Sizes in Dental HygieneWhich of the following is NOT a correct regulation regarding PID and tubehead sizes?Understanding Root Canals: Why They’re Necessary for Dental HealthWhich of the following is one of the main reasons for a root canal?Understanding Root Caries: A Key Concern for Aging AdultsApproximately what percentage of adults has experienced root caries?Understanding Root Hemisection in Dental HygieneWhat is the primary purpose of root hemisection?Understanding Root Hemisection: A Key Dental ProcedureWhat procedure involves removal of half of the tooth, including a portion of both the crown and root?Understanding Saliva's Role in Oral Health: A Key to Preventing Dental CariesWhich of the following is not a major component of saliva that helps protect against dental caries?Understanding Saliva's Role in Preventing Dental CariesWhich of the following is NOT a major component of saliva that protects against dental caries?Understanding Scleroderma: The Tightening Skin ConditionWhat condition is characterized by tightening of skin around the mouth that can limit mouth opening?Understanding Sialoliths and Wharton's Duct: Key Insights for Dental HygienistsWhich area is primarily palpated for identifying blockages of sialoliths?Understanding Soft Tissue Complications in Dental ProstheticsWhich condition is not typically associated with soft tissue considerations related to prosthesis use?Understanding Stillman's Cleft: A Vital Concept for Future Dental HygienistsA narrow, slit-like cleft in the marginal gingiva is known as what type of cleft?Understanding Stratified Squamous Epithelium in the Oral CavityWhich type of epithelial tissue is found lining the oral cavity?Understanding Subgingival Irrigation Solutions for Dental HygieneWhich of the following solutions is NOT commonly used for subgingival irrigation?Understanding Supervision Levels in Dental Hygiene ExamsWhat type of supervision is indicated when an exam is performed at a 6-month recall?Understanding Teratogenic Effects in Maternal HealthWhat does teratogenic effect refer to?Understanding the Chi Square Test for Dental Hygiene ResearchFor what purpose is the Chi square test primarily used?Understanding the Chi-Square Test: A Crucial Tool for Dental Hygiene ResearchWhich of the following tests is used to compare actual results versus independent results?Understanding the deft Index: What Higher Scores Really Mean for Dental HealthIn a dental study measuring caries, what does a higher deft index indicate?Understanding the Dormancy of Herpes Simplex Virus and Its Implications for Dental HygieneAfter an outbreak of herpetic gingivostomatitis, the herpes simplex virus may remain dormant in which of the following?Understanding the Early Signs of GingivitisWhat is commonly observed in the early stage of gingivitis?Understanding the Healthy Appearance of Gum TissueWhat appearance of gum tissue is indicative of good health?Understanding the Implications of the Null Hypothesis in ResearchWhat does accepting a null hypothesis indicate in statistical terms?Understanding the Importance of the Gracey 11/12 Curette for Dental HygienistsWhich of the following Gracey area-specific curettes would be appropriate to use on the mesial of posterior teeth?Understanding the Indexes for Assessing Caries ExperienceWhat index is utilized to assess caries experience in a population?Understanding the Limits of Veneers in Dental AestheticsA veneer will correct all of the following except?Understanding the Link Between Periodontal Disease and SmokingWhat type of disease is periodontal disease most often associated with smoking?Understanding the Link Between Smoking, Vitamin C Deficiency, and Periodontal DiseasePeriodontal disease can be more severe in patients that smoke when they are deficient in which vitamin?Understanding the Mode: A Key Concept for Dental Hygiene StudentsWhich of the following accurately describes a characteristic of the mode in a data set?Understanding the Mode: A Key Player in Statistics for Dental HygienistsIn statistics, what term defines the most frequently occurring value in a data set?Understanding the P-Value: A Key Statistical Concept for Dental HygienistsWhat does the p-value in statistics typically represent?Understanding the Plaque Index: What a Score of 2.0-3.0 Really MeansWhat is indicated by a plaque index range of 2.0-3.0?Understanding the Primary Cause of Abfraction in TeethWhat is the primary cause of abfraction in teeth?Understanding the Right Instruments for Debridement Around Dental ImplantsWhich of the following is NOT an instrument used in debridement around dental implants?Understanding the Right Steps for Sealant PreparationIf a tooth becomes wet due to saliva contact during sealant preparation, what is the next correct step?Understanding the Role of Ameloblasts in Tooth DevelopmentWhat is the layer of cells that form enamel called?Understanding the Role of Antibiotics in Managing Localized Periodontal DiseaseWhat substance is typically used for managing localized periodontal disease?Understanding the Role of Listerine in Dental CareWhat is the primary use of Listerine in dental practice?Understanding the Role of Periodontal Treatment in Preventive CareWhat level of care does periodontal treatment fall under?Understanding the Role of PID in Dental RadiographyWhich component of the x-ray tubehead is responsible for collimation?Understanding the Role of Vasoconstrictors with Lidocaine in Dental HygieneA vasoconductor does which of the following when used in conjunction with Lidocaine?Understanding the Term Halitosis and Its ImplicationsWhat is the term used to describe bad breath?Understanding the Trifurcation of Maxillary MolarsWhat structure is formed by the trifurcation of maxillary molars?Understanding the Trigeminal Nerve and Foramen Ovale in Dental HygieneWhich cranial nerve passes through the foramen ovale of the sphenoid bone?Understanding the Unique Traits of Anaerobic BacteriaWhich of the following is NOT a characteristic of anaerobic bacteria?Understanding the Use of Risperdal: Why is 4 mg/day Prescribed?What is the purpose of prescribing Risperdal 4 mg/day?Understanding the Vital Role of Periodontal Pockets in Dental HygieneWhat type of pocket is generated by an apical migration of the junctional epithelium?Understanding the Waiting Period for Pre-Medicated Patients After Scaling and Root PlaningHow many days should a pre-medicated patient wait between scaling and root planing appointments?Understanding the Williams Probe: A Key Tool for Dental Hygiene SuccessWhat type of probe is characterized by millimeters marked at 1, 2, 3, 5, 7, and deeper?Understanding Vital Whitening: Transforming Your Smile with Live TeethVital whitening is performed on which of the following?Understanding Wedge-Shaped Lesions: The Abfraction ExplainedWedge-shaped lesions along the cervical margin of the teeth are referred to as what?Unpacking External Motivation: How It Influences Dental Hygiene ProfessionalsWhich motivation type is characterized by rewards given by external factors?What a Plaque Index of 2.1 Means for Your Oral HealthA plaque index of 2.1 is considered what level of plaque accumulation?What You Need to Know About Materials for Partial DenturesWhich of the following is not commonly used as a material for making partial dentures and denture teeth?When Is Gingivitis Considered Controlled?Gingivitis is considered controlled when?Why a Longer Cone on Your X-ray Machine Makes a DifferenceIf the cone on the x-ray machine is increased in length, what happens to the radiation absorbed dose?Why Excessive Teeth Polishing with Pumice Could Harm Your Gum HealthWhat is the expected outcome of polishing teeth for excessive durations with pumice?Why Nerve Tissue is the Most Radioresistant in the BodyWhich of the following is the most radioresistant?Why the Fones Brushing Method Isn't Ideal for Patients with Hand PainWhich modified brushing method should NOT be recommended for a patient experiencing pain in her hand after a fall?
More practice questions

These questions are part of the practice quiz. Start practicing

  • Which teeth have a trifurcation?
  • Which type of need comes after physiological needs according to Maslow's hierarchy?
  • Which ethnicity has a higher prevalence of periodontal disease?
  • Which brushing technique places the bristles at the attached gingiva and sweeps them apically?
  • What is a result of scleroderma observed during an intraoral exam?
  • Which of the following statements is NOT true regarding ADHD?
  • What is the smallest permanent tooth in the mouth?
  • Which of the following is NOT a common symptom of gingivitis?
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