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