NBDHE Mock Exam Review with 100% Correct Answers 2023, Exams of Mock Trial and Moot Court

Download NBDHE Mock Exam Review with 100% Correct Answers 2023 and more Exams Mock Trial and Moot Court in PDF only on Docsity! NBDHE Mock Exam Review with 100% Correct Answers 2023 Which is the functional unit of striated muscle? - Correct answer A. A band B. I band C. H Zone D. Sarcomere D. Sarcomere Slightly damaged tissue completely returns to its normal structure and function in which healing process? - Correct answer A. Primary intention B. Regeneration C. Repair D. Secondary intention B. Regeneration In a normal differential blood count, which is the most numerous white blood cell? - Correct answer A. Basophils B. Lymphocytes C. Monocytes D. Neutrophils D. Neutrophils The two buccal roots are normally about the same length in: - Correct answer A. The maxillary first molars only B. the maxillary second molars only C. the maxillary third molars only D. both maxillary first and second molars B. the maxillary second molars only The most common autopsy finding in instances of sudden death as a result of myocardial infarction is: - Correct answer A. aneurysm of the heart wall B. coronary thrombosis C. fibrous pericarditis D. valvular prolapse B. coronary thrombosis Which is not a characteristic of salivary glycoproteins? - Correct answer A. block binding of bacteria to pellicle B. enhance binding of bacteria to tooth surfaces C. interact with calcium and phosphate in hydroxyapatite D. result from lysis of bacterial cell walls B. enhance binding of bacteria to tooth surfaces Each of the following statements is correct regarding saltatory conduction except one. What is the exception? - Correct answer A. it involves the nodes of Ranvier B. it is associated with unmyelinated axons C. it is energy saving D. it is faster B. It is associated with unmyelinated axons Each of the following is a rule for antibiotic selection when managing an oral infection except one. Which is the exception? - Correct answer A. debride infectious debris B. provide effective environment for host immune response C. select agent to which infecting organism is susceptible D. select agent with broadest spectrum of activity D. Select agent with broadest spectrum if activity Thyroxine increases each of the following except one. Which is the exception? - Correct answer A. metabolic rate and heart production B. oxygen consumption, breathing, and cardiac output C. production of thyroid stimulating hormone by the pituitary gland D. protein synthesis and enzyme production by cells C. production of thyroid stimulating hormone by the pituitary gland Which is correct concerning the primitive groove? - Correct answer A. assists in the formation of trilaminar germ disc B. located on the endoderm C. located on the mesoderm D. precursor of the bilaminar germ disk D. precursor of the bilaminar germ disk Which is a pathologic wearing away of tooth structure through some abnormal mechanical process? - Correct answer A. Abrasion B. Attrition C. Bruxism D. Erosion D. high density D. High density Which is the cell that is found in a lacuna of cartilage? - Correct answer A. Chrondoclast B. Chrondocyte C. Osteoblast D. Osteocyte B. Chondrocyte Which generalization is correct about proximal contact areas? - Correct answer C. posterior teeth have contact areas that are generally centered faciolingually The anti-inflammatory action of aspirin is in part due to: - Correct answer A. a decrease in capillary permeability B. an increase in capillary permeability C. inhibition of bradykinin synthesis D. its action on the white blood cells B. increase in capillary permeability Which RNA virus is associated with the common cold? - Correct answer A. Hep A B. Influenza A C. Norovirus D. Rhinovirus D. Rhinovirus Which is an anticholinergic drug used to reduce airway secretions? - Correct answer A. acetylcholine B. atropine (anti-cholinergic) C. Neostigmine (cholinergic) D. Pilocarpine (cholinergic) B. Atropine which term refers to complete obstruction of blood flow to a particular area? - Correct answer A. Aneurysm B. Hematoma C. infarction D. Petechiae C. infarction Which cause of macroglossia is developmental? - Correct answer A. hemangioma B. Myxedema C. neurofibromatosis D. primary herpetic stomatitis C. neurofibromatosis Which leukemia most frequently infiltrates the gingivae and causes gingival swelling? - Correct answer A. Aleukemic B. Granulocytic C. Lymphocytic D. Monocytic D. Monocytic Which structure appears most radiopaque on a radiograph? - Correct answer A. Cementum B. Dentin C. Enamel D. Trabecular bone C. Enamel Bleeding upon probing is a key diagnostic sign of: - Correct answer A. alveolar bone loss B. gingival inflammation C. Inactive periodontitis D. traumatic occlusion B. Gingival inflammation In evaluating sealant placement, a dental hygienist should assess each of the following except one. Which is the exception? - Correct answer A. occlusal interference B. penetration depth C. pit and fissure coverage D. proximal overrun B. Penetration depth A topical anesthetic applied in the gingival sulcus on the facial surface of tooth 25 will provide a few minutes anesthesia for: - Correct answer A. gingival sensitivity B. pulpal pain C. root planing D. the lingual sulcus A. gingival sensitivity Which oral hygiene aid is contraindicated as a bacterial plaque control tool for a patient with dental implants? - Correct answer A. Pipe cleaner B. Rubber tip stimulator C. Toothpick-in-holder D. Waxed dental floss A. pipe cleaner The final stage in plaque biofilm formation is: - Correct answer A. establishment of unattached plaque biofilm B. extension to the apex of the root C. mineralization to form calculus D. selective adherence of pathogenic bacteria C. mineralization to form calculus Which is the agent of choice for final polishing of gold restorations? - Correct answer A. aluminum oxide B. flour of pumice C. silex D. silicon dioxide E. zirconium silicate A. aluminum oxide In the pathogenesis of periodontal infections, which best explains the role of systemic factors? They - Correct answer A. alter the position of the gingival margin B. alter tooth mobility C. determine the pattern of bone loss D. directly affect pocket depth E. modify the patient's response to local factors E. Each of the following is appropriate for implant home maintenance except one. which is the exception? - Correct answer A. chlorhexidine rinse B. powered toothbrush C. tufted floss D. ultrasonic scaler D. Ultrasonic scaler During the dental appointment, a conscious diabetic patient is demonstrating signs of hypoglycemia and is unable to respond to questions. Which should the dental hygienist administer prior to the arrival of emergency medical services (EMS)? - Correct answer A. IM glucagon D. Nitrous oxide sedation equipment used in a dental setting will not allow oxygen delivery less than that in ambient air. Which best approximates the percentage of oxygen in ambient air? - Correct answer A. 5% B. 20% C. 30% D. 70% C. 30% Which device is the most effective at cleaning concave inter-proximal surfaces that have a history of bone and attachment loss? - Correct answer A. end-tuft brush (embrasure spaces) B. floss C. interdental brush D. powered toothbrush C. interdental brush ??? Biological monitoring of sterilization equipment should occur? - Correct answer A. daily B. at least once a week C. monthly D. with each sterilization cycle B. atleast once a week Primordial cysts are most often found radiographically in: - Correct answer A. mandibular canine and first premolar areas B. maxillary anterior regions C. primary dentitions D. the area of the third molar D. the area of the third molar Which is the appropriate term for mechanical wear due to improper tooth brushing? - Correct answer A. abfraction B. abrasion C. attrition D. erosin B. abrasion A patient presents with painful membranous ulceration of the gingiva, poor oral hygiene, and fetor oris. Which rinse is best indicated - Correct answer A. cetylpyridium chloride B. chlorhexidine C. essential oil D. sodium fluoride B. chlorhexidine Hypersensitive dentin can best be treated with application of which solution? - Correct answer A. Eugenol B. Fluoride C. Glyoxide D. Topical anesthetic A. Eugenol A dental hygienist seats a patient to obtain an accurate blood pressure reading. Each of the following steps is necessary except one. Which is the exception? - Correct answer A. Cuff is deflated at a rate of 2-3mm Hg/sec B. Diaphragm of stethoscope is placed over brachial artery C. Patient's arm is at his/her chest level D. Sphygmomanometer has a cuff width 20 percent smaller than the circumference of the patient's upper arm D. If the film was placed correctly but lacks desired mesial structures, which error occurred? - Correct answer A. horizontal angle positioned too distally B. horizontal angle positioned too mesially C. vertical angle positioned too high D. Vertical angle positioned too low A. horizontal angle positioned too distally Overjet refers to the: - Correct answer B. horizontal distance between the lingual surface of the maxillary incisors and the facial surface of the mandibular incisors Fluoridation of municipal water supplies is often achieved by adding appropriate amounts of - Correct answer A. calcium fluoride B. monofluorophosphate fluoride C. sodium silicofluoride D. stannous fluoride C. sodium silicofluoride Each of the following is true about the utilization of dental services in the USA except one. Which is the exception? - Correct answer A. age and gender do not play a significant role in utilization of dental services B. demand for services is influenced by third-party coverage C. each generation demands a different variety of dental services D. Higher education and income is associated with better utilization rate D. Higher education and income is associated with better utilization rate According to the hydrodynamic theory, what leads to the sensation of pain? - Correct answer A. Calculus deposits B. Fluid flow within the dentinal tubules C. increased activity of odontoblasts D. Microleakage of bacterial endotoxins B. Which is characterized by a progressive weakness and loss of the use of symmetrical groups of muscles? - Correct answer A. Autism B. Cerebral palsy C. Duchenne muscular dystrophy D. Scleroderma C. Ketoacidosis is commonly associated with: - Correct answer A. Addisons disease B. Cushing disease C. Diabetes D. Sjogren syndrome C. diabetes Patients with diabetes type 1: - Correct answer A. cannot be treated successfully B. may only receive non-surgical periodontal treatment C. must only be given local anesthetics without vasoconstriction D. show an increased incidence and severity of periodontitis D. show an increased incidence and severity of periodontitis Which is the primary reason to place sutures following periodontal surgery? - Correct answer A. control bleeding B. position the flap C. prevent infection D. Prevent trauma C. prevent infection Which factor is the least important to the setting time of dental stone? - Correct answer A. chemical accelerator C. severe periodontal disease Each of the following products can be used on an existing sealant because it will not increase sealant wear except one. which is the exception? - Correct answer A. air- powder polishing B. disclosing solution C. essential oil mouthrinse D. sodium fluoride A. air-powder polishing If a patient expresses opposition to having dental radiographs exposed, the dental hygienist should - Correct answer A. ask the patient to sign a document releasing the practitioner from liability B. perform dental hygiene treatment without the radiographs C. postpone all treatment until the patient agrees to undergo the procedure D. provide a rationale for and explain the benefits of the prescribed radiographs D. provide a rationale for and explain the benefits of the prescribed radiographs During which stage of tooth formation does chronic fluoride toxicity occur? - Correct answer A. post-eruptive B. pre-eruptive maturation C. pre-eruptive mineralization D. prenatal B. The terminal 1 to 2 mm of the working end of a gracey curet is the - Correct answer A. blade B. end C. point D. Tip E. toe E. toe Which cells are at the greatest risk for radiation damage? - Correct answer A. embryonic and immature B. highly specialized C. radio-resistant D. slowly dividing A. embryonic and immature Which represents the most effective time to introduce school-based tobacco use intervention programs? - Correct answer A. kindergarten B. primary school C. middle school D. high school C. middle school Which is the phase of treatment planning that examines the success of dental hygiene intervention? - Correct answer A. assessment B. diagnosis C. evaluation D. implementation E. planning C. evaluation In a healthy mouth, the attached gingiva is between the - Correct answer free gingival groove and the muco-gingival junction the design feature of the curet that allows it to be used in the deepest area of the pocket with the least amount of tissue trauma is the - Correct answer A. angulated shanked B. convex back C. off-set face D. round toe B. convex back Which is the small fifth cusp seen on the maxillary first molar? - Correct answer Cusp of Carabelli A patient presents with a pulse rate of 1-4. Which term best describes this patient's condition? - Correct answer Tachycardia Where is the parotid papilla located? - Correct answer A. Buccal mucosa B. dorsum of the tongue C. floor of the mouth D. vestibule A. buccal mucosa Objectives of root planing include each of the following except one. Which is the exception? - Correct answer A. reduction of gingival inflammation B. removal of calculus C. removal of dentin D. removal of plaque C. removal of dentin Which is the primary collimator in the x-ray tubehead? - Correct answer A. diaphragm B. filter C. focusing cup D. transformer A. diaphragm