/44 0 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) 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. Streptococcus pneumoniae b. Klebsiella pneumoniae c. Mycobacterium tuberculosis d. Pseudomonas aeruginosa 2 / 44 2) Microorganisms in oral tissue can cause π a. Systemic infection b. Both, local and systemic infection c. Only local infection d. Local infection 3 / 44 3) Bacteria usually cause Pericoronitis? a. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens b. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena c. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga d. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen 4 / 44 4) In dental caries, the pathogenic factor is π a. Good oral hygiene b. Remineralization ( fluoride, Calcium, Phosphate) c. Acid producing bacteria d. Saliva flow and components 5 / 44 5) Antimicrobial against Porphyromonas gingivalis is π a. Vancomycin b. Erythromycin c. Kanamycin d. Metronidazole 6 / 44 6) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus b. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti c. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti d. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti 7 / 44 7) Steps in order for biofilm formation:? a. Adhesion, colonization, coadhesion , maturation and detachment b. Colonization , adhesion, coadhesion , maturation and detachment c. Maturation and detachment, adhesion, colonization, coadhesion d. Coadhesion , adhesion, colonization, maturation and detachment 8 / 44 8) Principal Rods Gram negative bacteria found in oral cavity:? a. Lactobacillus b. Porphyromonas c. Eubacterium d. Corynebacterium 9 / 44 9) Major bacteria cause aggressive periodontitis? a. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae b. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia c. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae 10 / 44 10) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. A. Streptococcus b. D. Gonococcus c. C. Prevotella d. B. Actinomyces 11 / 44 11) Infection in oral cavity by oral flora, which proposition is inexact? a. Administration of antibiotics b. Changes in exposure to antiseptic c. Changes in the immune system d. Changes in salivary flow 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) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. Detection of proteins by molecular biology technique b. Detection of DNA by molecular biology technique c. Microscopy techniques d. High Pressure Liquid Chromatography (HPLC) 14 / 44 14) Antibiotic which is common use to treat anaerobic bacteria π a. Gentamicin b. Colistin c. Metronidazole d. Vancomycin 15 / 44 15) Principal Cocci Gram positive bacteria found in oral cavity:? a. Neisseria b. Peptostreptococcus c. Moraxella d. Veillonella 16 / 44 16) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 2 b. Phase 3 c. Phase 1 d. Phase 4 17 / 44 17) 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 18 / 44 18) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus b. Mutans Streptococci, Lactobacilli, Actinomyces vicosus c. Mutans Streptococci, Lactobacilli, Clostridium d. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus 19 / 44 19) Principal Cocci Gram negative bacteria found in oral cavity:? a. Gemella b. Veillonella c. Streptococcus d. Enterococcus 20 / 44 20) 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 21 / 44 21) 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 22 / 44 22) Diseases are always found in oral cavity, except π a. Typhoid fever b. Gonococci c. Tuberculosis d. Syphilis 23 / 44 23) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Streptococcus stains b. Enterococcus stains c. Pseudomonas stains d. Staphylococcus stains 24 / 44 24) Dental caries, which answer is incorrect? a. Characterized by demineralization of the inorganic portion b. Increased of the organic substance of the tooth c. Calcified tissues of the teeth d. Multifunctional microbial disease 25 / 44 25) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Genital infection b. Mouth c. Artificial hip implant d. Subvenous catheter 26 / 44 26) 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 27 / 44 27) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa 28 / 44 28) The comment bacterium causes dental caries:? a. Staphylococcus aureus b. Mutans Streptococci c. Pseudomonas aeruginosa d. E.coli 29 / 44 29) Which bacteria that is not presence in buccal mucosa? a. Streptococcus mutans b. Streptococcus mitis c. Treponema palidum d. Streptococcus anginosus 30 / 44 30) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Staphylococcus b. Helicobacter c. Enterococcus d. Pseudomonas 31 / 44 31) In dental caries, the protective factor is π a. Poor oral hygiene b. Acid producing bacteria c. Antibacterials ( fluorides, Chlorhexidine, Xylitol) d. Frequent eating / drinking of fermentable carbohydrates 32 / 44 32) Which bacteria that is not always presence in saliva:? a. Streptococcus mitis b. Streptococcus oralis c. Streptococcus salivarius d. Streptococcus agalactiae 33 / 44 33) A bacterium that never found in tooth surface:? a. Streptococcus anginosus b. Streptococcus mutans c. Streptococcus mitis d. Streptococcus pneumoniae 34 / 44 34) Principal Rods Gram positive bacteria found in oral cavity:? a. Actinomyces b. Simonsiella c. Prevotella d. Eikenella 35 / 44 35) Steps in order to perform bacteriological diagnostic of oral microbiology:? a. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing b. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , c. Direct examination , Gram stain, Culture , Identification , Antimicrobial Susceptibility testing d. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , 36 / 44 36) Strategy to control of nutrients in oral biofilm:? a. Stimulate base production b. Inhibition of key microbial enzyme c. Fluoride d. Antimicrobial agents 37 / 44 37) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Staphylococcus stains b. Fusobacterium nucleatum c. Enterococcus stains d. Streptococcus strains 38 / 44 38) Strategy to control of rendox potential in oral biofilm:? a. Oxygenating agents b. Inhibition of key microbial enzyme c. Fluoride d. Stimulate base production 39 / 44 39) 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 40 / 44 40) Specificity of Anaerobic bacteria, except:? a. Grow on anaerobic media culture b. Foul odor when opening anaerobic jar or bag c. Incubation culture in 1-2 days d. Black pigmentation on culture 41 / 44 41) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Klebsiella pneumoniae b. Pseudomonas aeruginosa c. Streptococcus pneumoniae d. Mycobacterium tuberculosis 42 / 44 42) A bacterium that is usually found in tongue π a. Streptococcus mitis b. Clostridium difficile c. Staphylococcus epidemidis d. Streptococcus pneumoniae 43 / 44 43) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Streptococcus mutans b. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) c. Streptococcus mitis d. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) 44 / 44 44) Pathway in order of pathogenesis of oral infection:? a. 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 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. 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 Your score isThe average score is 0% Facebook 0% Restart quiz Any comments? Send feedback