/44 471 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Factor that does not influence to dental caries? a. Size and form of teeth b. Substrate for microorganisms c. Duration and frequency of exposure d. Individual factor 2 / 44 2) Steps in order to perform bacteriological diagnostic of oral microbiology:? a. Direct examination , Gram stain, Culture , Identification , Antimicrobial Susceptibility testing b. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing c. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , d. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , 3 / 44 3) The comment bacterium causes dental caries:? a. E.coli b. Pseudomonas aeruginosa c. Mutans Streptococci d. Staphylococcus aureus 4 / 44 4) Which bacteria that is not always presence in saliva:? a. Streptococcus agalactiae b. Streptococcus mitis c. Streptococcus salivarius d. Streptococcus oralis 5 / 44 5) Antibiotic which is common use to treat anaerobic bacteria π a. Vancomycin b. Gentamicin c. Metronidazole d. Colistin 6 / 44 6) Diseases are always found in oral cavity, except π a. Syphilis b. Typhoid fever c. Gonococci d. Tuberculosis 7 / 44 7) Oral opportunistic infection happens when:? a. An organism that usually is pathogenic becomes normal flora b. An organism that usually is nonpathogenic has no opportunity to cause disease c. An organism that usually is pathogenic causes disease d. An organism that usually is nonpathogenic causes disease 8 / 44 8) A bacterium that never found in tooth surface:? a. Streptococcus mutans b. Streptococcus pneumoniae c. Streptococcus mitis d. Streptococcus anginosus 9 / 44 9) Strategy to control of nutrients in oral biofilm:? a. Fluoride b. Antimicrobial agents c. Inhibition of key microbial enzyme d. Stimulate base production 10 / 44 10) Steps in order for biofilm formation:? a. Maturation and detachment, adhesion, colonization, coadhesion b. Adhesion, colonization, coadhesion , maturation and detachment c. Coadhesion , adhesion, colonization, maturation and detachment d. Colonization , adhesion, coadhesion , maturation and detachment 11 / 44 11) Analytical techniques for monitoring biofilms by βDirect detectionβ π a. Microscopy techniques b. High Pressure Liquid Chromatography (HPLC) c. Gas Chromatography – Mass Spectrometry (GC-MS) d. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) 12 / 44 12) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in exposure to antiseptic b. Changes in the immune system c. Changes in salivary flow d. Administration of antibiotics 13 / 44 13) A bacterium that spread from lung infection and cause oral lesions with clinical sign include fever, chills, fatigue and malaise, weight loss, and persistent cough π a. Klebsiella pneumoniae b. Streptococcus pneumoniae c. Mycobacterium tuberculosis d. Pseudomonas aeruginosa 14 / 44 14) Dental caries, which answer is incorrect? a. Calcified tissues of the teeth b. Characterized by demineralization of the inorganic portion c. Multifunctional microbial disease d. Increased of the organic substance of the tooth 15 / 44 15) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. B. Actinomyces b. A. Streptococcus c. D. Gonococcus d. C. Prevotella 16 / 44 16) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. Detection of DNA by molecular biology technique b. Microscopy techniques c. High Pressure Liquid Chromatography (HPLC) d. Detection of proteins by molecular biology technique 17 / 44 17) Bacteria usually cause Pericoronitis? a. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena b. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens c. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen d. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga 18 / 44 18) Principal Cocci Gram negative bacteria found in oral cavity:? a. Gemella b. Enterococcus c. Streptococcus d. Veillonella 19 / 44 19) Specificity of Anaerobic bacteria, except:? a. Incubation culture in 1-2 days b. Grow on anaerobic media culture c. Black pigmentation on culture d. Foul odor when opening anaerobic jar or bag 20 / 44 20) Pathway in order of pathogenesis of oral infection:? a. Pus formation- Entry of bacteria into soft tissue wall or trauma to the orifice – Formation of infiltrate- Destruction of connective tissues- Decrease tissue resistance and increase number of bacteria with virulence b. Entry of bacteria into soft tissue wall or trauma to the orifice – Pus formation- Formation of infiltrate – Destruction of connective tissues – Decrease tissue resistance and increase number of bacteria with virulence c. Decrease tissue resistance and increase number of bacteria with virulence- Entry of bacteria into soft tissue wall or trauma to the orifice – Formation of infiltrate- Destruction of connective tissues- Pus formation d. Entry of bacteria into soft tissue wall or trauma to the orifice – Formation of infiltrate- Destruction of connective tissues- Pus formation- Decrease tissue resistance and increase number of bacteria with virulence 21 / 44 21) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Subvenous catheter b. Artificial hip implant c. Mouth d. Genital infection 22 / 44 22) In dental caries, the pathogenic factor is π a. Remineralization ( fluoride, Calcium, Phosphate) b. Saliva flow and components c. Acid producing bacteria d. Good oral hygiene 23 / 44 23) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Lactobacilli, Actinomyces vicosus b. Mutans Streptococci, Lactobacilli, Clostridium c. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus d. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus 24 / 44 24) Principal Cocci Gram positive bacteria found in oral cavity:? a. Neisseria b. Moraxella c. Veillonella d. Peptostreptococcus 25 / 44 25) Strategy to control of rendox potential in oral biofilm:? a. Fluoride b. Inhibition of key microbial enzyme c. Oxygenating agents d. Stimulate base production 26 / 44 26) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa 27 / 44 27) Principal Rods Gram positive bacteria found in oral cavity:? a. Simonsiella b. Eikenella c. Actinomyces d. Prevotella 28 / 44 28) Major bacteria cause aggressive periodontitis? a. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia b. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae 29 / 44 29) A bacterium that is usually found in tongue π a. Streptococcus pneumoniae b. Clostridium difficile c. Streptococcus mitis d. Staphylococcus epidemidis 30 / 44 30) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus b. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti c. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti d. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti 31 / 44 31) In dental caries, the protective factor is π a. Acid producing bacteria b. Antibacterials ( fluorides, Chlorhexidine, Xylitol) c. Frequent eating / drinking of fermentable carbohydrates d. Poor oral hygiene 32 / 44 32) Principal Rods Gram negative bacteria found in oral cavity:? a. Corynebacterium b. Porphyromonas c. Lactobacillus d. Eubacterium 33 / 44 33) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Borrelia vincentii and Eikenella corrodens b. Borrelia vincentii and Porphyromonas endodontalis c. Fusiform bacillus and Borrelia vincentii d. Fusiform bacillus and Capnocytophaga sputigena 34 / 44 34) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 3 b. Phase 1 c. Phase 2 d. Phase 4 35 / 44 35) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 4 b. Phase 3 c. Phase 2 d. Phase 1 36 / 44 36) Strategy to control of biofilm pH in oral biofilm:? a. Antiflammatory agents b. Inhibition of key microbial enzyme c. Fluoride d. Generating nutrients 37 / 44 37) Microorganisms in oral tissue can cause π a. Systemic infection b. Only local infection c. Both, local and systemic infection d. Local infection 38 / 44 38) Antimicrobial against Porphyromonas gingivalis is π a. Erythromycin b. Kanamycin c. Vancomycin d. Metronidazole 39 / 44 39) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Enterococcus b. Helicobacter c. Pseudomonas d. Staphylococcus 40 / 44 40) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Enterococcus stains b. Fusobacterium nucleatum c. Streptococcus strains d. Staphylococcus stains 41 / 44 41) Which bacteria that is not presence in buccal mucosa? a. Streptococcus mutans b. Streptococcus mitis c. Streptococcus anginosus d. Treponema palidum 42 / 44 42) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Streptococcus mutans b. Streptococcus mitis c. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) d. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) 43 / 44 43) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Enterococcus stains b. Pseudomonas stains c. Staphylococcus stains d. Streptococcus stains 44 / 44 44) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Mycobacterium tuberculosis b. Klebsiella pneumoniae c. Pseudomonas aeruginosa d. Streptococcus pneumoniae Your score isThe average score is 84% Facebook 0% Restart quiz Any comments? Send feedback
