/44 130 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Lactobacilli, Clostridium b. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus c. Mutans Streptococci, Lactobacilli, Actinomyces vicosus d. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus 2 / 44 2) Principal Rods Gram negative bacteria found in oral cavity:? a. Porphyromonas b. Lactobacillus c. Eubacterium d. Corynebacterium 3 / 44 3) Steps in order to perform bacteriological diagnostic of oral microbiology:? a. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , b. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , c. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing d. Direct examination , Gram stain, Culture , Identification , Antimicrobial Susceptibility testing 4 / 44 4) Antibiotic which is common use to treat anaerobic bacteria π a. Gentamicin b. Vancomycin c. Metronidazole d. Colistin 5 / 44 5) Bacteria usually cause Pericoronitis? a. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga b. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens c. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen d. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena 6 / 44 6) 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. Pseudomonas aeruginosa c. Streptococcus pneumoniae d. Mycobacterium tuberculosis 7 / 44 7) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti b. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti c. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti d. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus 8 / 44 8) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Fusiform bacillus and Capnocytophaga sputigena b. Borrelia vincentii and Porphyromonas endodontalis c. Borrelia vincentii and Eikenella corrodens d. Fusiform bacillus and Borrelia vincentii 9 / 44 9) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. Detection of proteins by molecular biology technique b. High Pressure Liquid Chromatography (HPLC) c. Detection of DNA by molecular biology technique d. Microscopy techniques 10 / 44 10) In dental caries, the pathogenic factor is π a. Acid producing bacteria b. Saliva flow and components c. Remineralization ( fluoride, Calcium, Phosphate) d. Good oral hygiene 11 / 44 11) Steps in order for biofilm formation:? a. Adhesion, colonization, coadhesion , maturation and detachment b. Maturation and detachment, adhesion, colonization, coadhesion c. Coadhesion , adhesion, colonization, maturation and detachment d. Colonization , adhesion, coadhesion , maturation and detachment 12 / 44 12) Which bacteria that is not always presence in saliva:? a. Streptococcus oralis b. Streptococcus salivarius c. Streptococcus mitis d. Streptococcus agalactiae 13 / 44 13) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Staphylococcus stains b. Enterococcus stains c. Streptococcus stains d. Pseudomonas stains 14 / 44 14) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Genital infection b. Mouth c. Subvenous catheter d. Artificial hip implant 15 / 44 15) Principal Rods Gram positive bacteria found in oral cavity:? a. Actinomyces b. Simonsiella c. Eikenella d. Prevotella 16 / 44 16) Microorganisms in oral tissue can cause π a. Only local infection b. Systemic infection c. Local infection d. Both, local and systemic infection 17 / 44 17) Strategy to control of rendox potential in oral biofilm:? a. Inhibition of key microbial enzyme b. Stimulate base production c. Oxygenating agents d. Fluoride 18 / 44 18) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Streptococcus strains b. Fusobacterium nucleatum c. Enterococcus stains d. Staphylococcus stains 19 / 44 19) Major bacteria cause aggressive periodontitis? a. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia b. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae 20 / 44 20) Diseases are always found in oral cavity, except π a. Tuberculosis b. Typhoid fever c. Syphilis d. Gonococci 21 / 44 21) Principal Cocci Gram positive bacteria found in oral cavity:? a. Veillonella b. Neisseria c. Peptostreptococcus d. Moraxella 22 / 44 22) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. D. Gonococcus b. A. Streptococcus c. B. Actinomyces d. C. Prevotella 23 / 44 23) Antimicrobial against Porphyromonas gingivalis is π a. Erythromycin b. Vancomycin c. Metronidazole d. Kanamycin 24 / 44 24) Which bacteria that is not presence in buccal mucosa? a. Streptococcus mitis b. Treponema palidum c. Streptococcus anginosus d. Streptococcus mutans 25 / 44 25) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Streptococcus mutans b. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) c. Streptococcus mitis d. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) 26 / 44 26) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 2 b. Phase 1 c. Phase 4 d. Phase 3 27 / 44 27) A bacterium that never found in tooth surface:? a. Streptococcus anginosus b. Streptococcus pneumoniae c. Streptococcus mutans d. Streptococcus mitis 28 / 44 28) Strategy to control of nutrients in oral biofilm:? a. Stimulate base production b. Antimicrobial agents c. Fluoride d. Inhibition of key microbial enzyme 29 / 44 29) Oral opportunistic infection happens when:? a. An organism that usually is nonpathogenic has no opportunity to cause disease b. An organism that usually is pathogenic becomes normal flora c. An organism that usually is nonpathogenic causes disease d. An organism that usually is pathogenic causes disease 30 / 44 30) Analytical techniques for monitoring biofilms by βDirect detectionβ π a. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) b. Gas Chromatography – Mass Spectrometry (GC-MS) c. High Pressure Liquid Chromatography (HPLC) d. Microscopy techniques 31 / 44 31) Specificity of Anaerobic bacteria, except:? a. Grow on anaerobic media culture b. Incubation culture in 1-2 days c. Foul odor when opening anaerobic jar or bag d. Black pigmentation on culture 32 / 44 32) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in the immune system b. Changes in exposure to antiseptic c. Administration of antibiotics d. Changes in salivary flow 33 / 44 33) The comment bacterium causes dental caries:? a. E.coli b. Pseudomonas aeruginosa c. Mutans Streptococci d. Staphylococcus aureus 34 / 44 34) A bacterium that is usually found in tongue π a. Staphylococcus epidemidis b. Streptococcus pneumoniae c. Clostridium difficile d. Streptococcus mitis 35 / 44 35) Strategy to control of biofilm pH in oral biofilm:? a. Antiflammatory agents b. Inhibition of key microbial enzyme c. Fluoride d. Generating nutrients 36 / 44 36) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus 37 / 44 37) Principal Cocci Gram negative bacteria found in oral cavity:? a. Streptococcus b. Enterococcus c. Gemella d. Veillonella 38 / 44 38) Factor that does not influence to dental caries? a. Size and form of teeth b. Substrate for microorganisms c. Individual factor d. Duration and frequency of exposure 39 / 44 39) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 4 b. Phase 2 c. Phase 1 d. Phase 3 40 / 44 40) Pathway in order of pathogenesis of oral infection:? a. 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 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. 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 d. 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 41 / 44 41) Dental caries, which answer is incorrect? a. Multifunctional microbial disease b. Characterized by demineralization of the inorganic portion c. Increased of the organic substance of the tooth d. Calcified tissues of the teeth 42 / 44 42) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Pseudomonas aeruginosa b. Klebsiella pneumoniae c. Streptococcus pneumoniae d. Mycobacterium tuberculosis 43 / 44 43) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Pseudomonas b. Staphylococcus c. Enterococcus d. Helicobacter 44 / 44 44) In dental caries, the protective factor is π a. Frequent eating / drinking of fermentable carbohydrates b. Acid producing bacteria c. Antibacterials ( fluorides, Chlorhexidine, Xylitol) d. Poor oral hygiene Your score isThe average score is 87% Facebook 0% Restart quiz Any comments? Send feedback
