NBDHE Practice Exam With 100% Correct Answers 2023

intercellular ground substance is composed of - Correct answer-protein carbohydrate complexes What RNA virus is associated with the common cold? - Correct answer-Rhinovirus Which generalization is correct about proximal contact areas? - Correct answer-Anterior teeth have contact areas that are generally centered faciolingually Slightly damaged tissues completely returns to its normal structure and function in which healing process? - Correct answer-Regeneration Pain sensation might be blocked from going to the central nervous system by other stimuli. This is best explained by which theory? - Correct answer-Gate Control What term refers to complete obstruction of blood flow to a particular area - Correct answer-infarction The most common autopsy finding in instances of sudden death as a result of myocardial infarction is - Correct answer-coronary thrombosis formation of blood clot inside a blood vessel of the heart - Correct answer-Coronary Thrombosis Deep cervical nodes are distributed along what? - Correct answer-Internal jugular vein What is true regarding saltatory conducti - Correct answer--it involves Nodes of Ranvier -It is energy saving -It is faster Which lipoprotein contains the greatest amount of protein? - Correct answer-High density What is the functional unit of Striated muscle? - Correct answer-Sarcomere developmental macroglossia? - Correct answer-Myxedema Characteristics of salivary glycoproteins - Correct answer--Enhance binding of bacteria to tooth surfaces -Interact with calcium and phosphate in hydroxyapatite -Results from lysis of bacterial walls What factors determine the position of the first permanent molar? - Correct answerPrimary arch length Which characteristic of bacteria influences relative numbers in early plaque? - Correct answer-adherence to pellicle What id produced in the nucleolus? - Correct answer-Ribosomal RNA The two buccal roots are about the same length in - Correct answer-Perm MAX 2nd molars Anticholinergic drug used to reduce airway secretions? - Correct answer-Atropine- used to decrease saliva flow for dental procedures Cholinergic drug used to increase saliva flow in patients with Sjogrens Syndrome - Correct answer-Pilocarpine immune system disorder characterized by dry eyes and dry mouth - Correct answerSjogrens syndrome Drugs that mimic the parasympathetic nervous system - Correct answer-Cholinergic Drugs that block the parasympathetic nervous system - Correct answer-Anti-cholinergic anti-inflammatory action of aspirin is in part due to - Correct answer-inhibition of the enzyme cyclooxygenase, which leads to the formation of prostaglandins (that cause inflammation) Guanethidine (antihypertensive) is especially prone to produce which adverse effect? - Correct answer-Depression In normal blood count, which is the most numerous white blood cell? - Correct answerNeutrophils Thyroxine - Correct answer-Also called thryoid hormone, thyroxine is produced and secreted by follicle cells in the thyroid gland. it targets all cells in the body and increases overall body metabolism. Which primary teeth are the first to erupt? - Correct answer-Mand centrals Max centrals/ Mand laterals - Correct answer-7yrs Max lateral - Correct answer-8yrs Max Canine/ Md 2nd PM and 2molar - Correct answer-11 yrs Mx 1st and 2nd PM Md 1st PM - Correct answer-10yrs Max 1st Molar Md 1st Molar - Correct answer-6yrs Max 2nd molar Md 2 molar - Correct answer-11yrs Most often missed mesial coronal and root concavity - Correct answer-Max 1st premolar Premolar most often having 2 roots - Correct answer-Max 1st premolar Cuspid with occasionally bifurcated root - Correct answer-Mandibluar Tooth which most often fails to develop - Correct answer-third molar or maxillary lateral Non-functional lingual cusp - Correct answer-Mandibular first premolar Premolar which commonly has 3 cusps - Correct answer-mandibular second premolar Tooth most often affected by microdontia - Correct answer-Maxillary lateral incisor tooth most likely to exhibit lingual caries - Correct answer-Maxillary lateral incisor Max first molar oblique ridge runs from - Correct answer-DB cusp to ML cusp Mesial root of mandibular first molar - Correct answer-widest and strongest tooth with the tendency to have divergent roots - Correct answer-maxillary first molar Which microorganism found in periodontal pockets is motile? - Correct answer-C. rectus A.A P.intermedia T. forsythia - Correct answer-non motile bacteria 1 fluid ounce = - Correct answer-30ml How much epi in 1 cartridge of prilocaine - Correct answer-.005 Purpose of a high strength base - Correct answer-thermal protection of pulp biological monitoring sterilization should occur - Correct answer-1x a week Small 5th cusp on max 1st molar - Correct answer-cusp of carabelli final stage in plaque biofilm formation - Correct answer--established unmatched plaque -bacteria detach from the biofilm to become planktonic Bass brushing technique - Correct answer-sulcular tech Fluoride toxicity manifests in bones as - Correct answer--skeletal fluorosis -osteoporosis -hyperstosis Primary collimator in x-ray tubehead - Correct answer-Diaphragm Treatment of dentin hypersensitivity - Correct answer--potassium salts -fluoride final polishing of gold restoration - Correct answer--Silicon Carbide -silex Lymphocytic leukemia - Correct answer-gingival swelling/hyperplasia Hydrodynamic theory what leads to pain sensation - Correct answer-fluid flow within the dentinal tubules maxillary 1st premolar occludes with - Correct answer-mandibular 1st and 2nd premolars Safety device that prevents attachment of N2O cylinder to the o2 - Correct answer-pin index safety system Primordial cyst - Correct answer--A development odontogenic cyst -where a tooth should have formed but is missing - Md 3rd molars Apices of permanent incisors may bend toward the - Correct answer-Distal Primary reason for sutures following perio surgery - Correct answer-Maintain soft tissue adaptation What stage of tooth formation does chronic fluoride toxicity occur? - Correct answerPre-eruptive- maturation What causes dark color in gingivitis - Correct answer--trench mouth -excessive fibrin production Parotid Papillae are located - Correct answer-Buccal Mucosa blood supply to the tongue - Correct answer-lingual artery innervation of the tongue: - Correct answer-XII, V3, VII,IX -Keratinized papillae -contain no taste buds -most numerous -randomly changing pattern AKA geographic tongue -elongation known as hairy tongue - Correct answer-Filiform -Fewer, larger -appear as red bumps -contain taste buds - Correct answer-Fungiform -FOLDS of the tissue at the posterior, lateral border -contain taste buds -common site for oral cancer, lateral borders of the tongue - Correct answer-Foliate -8-12 -just anterior to the sulcus terminalis -contain taste buds -Glands of Von Ebner (minor salivary glands, serous) - Correct answer-Circumvallate Ketoacidosis is associated with - Correct answer-Diabetes ingredient used for air-power polishing - Correct answer-Sodium bicarbonate Progressive weakness and loss of use of symmetrical groups of muscles - Correct answer-Cerebral Palsy Fluoridation of municipal water supplies is often achieved by adding - Correct answer-- Sodium fluoride -Sodium Silicofluoride -Hydrofluorosilic N2O/O2 sedation equipment used in dental setting will NOT allow oxygen delivery less that in ambient air. What is the percentage of O2 in ambient air? - Correct answer-20% Lower leg edem - Correct answer-congestive heart failure non-opioid pain relief for history of opioid abuse - Correct answer-Ibuprofen -non-opioid -NSAID -Motril/Advil -inhibition of prostaglandins -Analgesic (pain reducer) -Antipyretic (fever reduced) -Anti-inflam - Correct answer-Ibuprofen Non-opioid NSAID contraindicated in patients with Gastric Ulcers - Correct answerIbuprofen patients with asthma should avoid - Correct answer-NSAIDS -use of acetaminophen only (Tylenol) -Tetracycline -Erythromycin -Azithromycin( Zithromax) -Clarithromycin (Biaxin) - Correct answer-Macrolide Anti-b 10% of patients that are allergic to penicillin are also allergic to - Correct answerCephalexin (Keflex) -Bactericidal (destroys bacteria cell wall) -most likely anti-b to cause anaphylactic allergic reaction -RASH -safe for pregnant women - Correct answer-Penicillin An unconscious patient with dilated pupils is most likely experiencing? - Correct answerDiabetic Coma 1 kilogram is equal to - Correct answer-2.2 pounds -open embrassures -Class IV furcations -Ortho appliances -Fixed prosthetics -Dental implants - Correct answer-Interdental brush * inner wire must be plastic coated to prevent scratching cementum* -Open Proximal spaces - Hard to access areas, 3rd molars and crowded teeth -fixed prosthetics (fixed partial denture, pontics, orthodontic appliance) - Correct answer-Tufted Brush -Exposed Class IV furcation's -interdental cleaning -concave proximal surfaces -gingival margins above ortho appliances -perio aid - Correct answer-Toothpick holder -Interdental areas with exposed root surfaces -recession - Correct answer-Wedge stimulator -Physically Challenged -Caregivers providing oral hygiene care - Correct answer-Floss Holder Can be placed under pontic(s) of a bridge or with orthodontic appliances - Correct answer-Tufted floss -Disrupts loosely adherent plaque -flushes debris and food particles around ortho appliances - Correct answer-Oral Irrigation Pseudomembranous Candidiasis - Correct answer-Thrush White plaque that wipes off Erythematous Candidiasis - Correct answer-Red Ulcerative lesion -painful what is responsible for the depression of cell-mediated immunity, altered collagen production and increased breakdown of the folate often experienced in pregnancy? - Correct answer-Macrophages non-surgical periodontal therapy - Correct answer-Scaling and root planning concentrates in the gingival crevicular fluid - Correct answer-Tetracycline -Arestin -adjuct to SCRP procedure for pocket depth reduction in patients with adult perio -direct placement of powder to base of the pocket - Correct answer-Minocycline -tx of chronic adult perio -Atridox -oral medication or gel - Correct answer-Doxycycline -Periochip -placed subgingivally -Perioguard and Peridex oral rinse - Correct answer-Chlorhexidine collagenase is associated with what periodontal bacteria - Correct answer-P. gingivalis A 3 wall bony defect has a better prognosis than a 1 wall defect - Correct answer-True Sutures are required post osseous surgery, since an incision is performed - Correct answer--used for tissue adaptation -decreased the distance cells need to migrate in the wound healing process -bioabsorbable (gut) -non-absorbable (silk) Goals of periodontal surgery - Correct answer-1. allow easier cleaning for patient 2. replace lost tissue 3. gain new attachment Fibrous tissue repair includes - Correct answer-1. Blood clotting 2. Wound healing 3. Tissue rebuilding 4. wound remodeling "po" is an abbreviation from latin meaning - Correct answer-By mouth/by opening -reverses the effects of opioid med -binds to the same receptor as opioid - Correct answer-Narcan (naloxone) Destroys the bacteria by inhibiting the final step in biosynthesis of the cell wall - Correct answer-Penicillin increased risk of bleeding during treatment may occur with ______, due to its antiplatelet effect - Correct answer-Aspirin heparin and warfarin - Correct answer-Anticoagulant -blood thinners MRD of epi for a healthy pt - Correct answer-.2mg MRD of epi for cardiovascular pt - Correct answer-0.4mg medications absorbed in the small intestines, metabolized in the liver and excreted by the kidneys - Correct answer-Medications taken by mouth medication used to manage bipolar disorder - Correct answer-Lithium -Reduce blood levels of lipids, such as cholesterol and triglycerides - Correct answerAntihyperlipidemic ('statins') blocks both alpha 1 and alpha 2 receptors - Correct answer-Inderol (propranolol) second generation beta blocker that selectively blocks beta 1 receptors - Correct answer-Tenmorin (atenolol) beta blocker often used to treat glaucoma - Correct answer-Timolol affects blood pressure by blocking alpha receptors - Correct answer-Cardura (doxazosin) 'bid' is the abbreviation for - Correct answer-twice a day TID is the abbreviation for - Correct answer-three times a day -Vicodine (acetaminophen and hydrocodone) -morphine - Correct answer-Classified as schedule II drugs due to risk of abuse antibiotic used to treat bacterial infections (NUG) -avoid alcohol -black hair tongue -metallic taste - Correct answer-Metronidazole (Flagyl)