/44 471 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Strategy to control of nutrients in oral biofilm:? a. Fluoride b. Stimulate base production c. Inhibition of key microbial enzyme d. Antimicrobial agents 2 / 44 2) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in exposure to antiseptic b. Administration of antibiotics c. Changes in the immune system d. Changes in salivary flow 3 / 44 3) Steps in order for biofilm formation:? a. Coadhesion , adhesion, colonization, maturation and detachment b. Colonization , adhesion, coadhesion , maturation and detachment c. Maturation and detachment, adhesion, colonization, coadhesion d. Adhesion, colonization, coadhesion , maturation and detachment 4 / 44 4) Principal Cocci Gram positive bacteria found in oral cavity:? a. Moraxella b. Peptostreptococcus c. Neisseria d. Veillonella 5 / 44 5) The comment bacterium causes dental caries:? a. Staphylococcus aureus b. Pseudomonas aeruginosa c. Mutans Streptococci d. E.coli 6 / 44 6) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Enterococcus b. Pseudomonas c. Staphylococcus d. Helicobacter 7 / 44 7) Specificity of Anaerobic bacteria, except:? a. Foul odor when opening anaerobic jar or bag b. Grow on anaerobic media culture c. Black pigmentation on culture d. Incubation culture in 1-2 days 8 / 44 8) Strategy to control of rendox potential in oral biofilm:? a. Fluoride b. Inhibition of key microbial enzyme c. Oxygenating agents d. Stimulate base production 9 / 44 9) Which bacteria that is not always presence in saliva:? a. Streptococcus agalactiae b. Streptococcus mitis c. Streptococcus salivarius d. Streptococcus oralis 10 / 44 10) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus b. Mutans Streptococci, Lactobacilli, Clostridium c. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus d. Mutans Streptococci, Lactobacilli, Actinomyces vicosus 11 / 44 11) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Streptococcus strains b. Staphylococcus stains c. Enterococcus stains d. Fusobacterium nucleatum 12 / 44 12) A bacterium that is usually found in tongue π a. Streptococcus mitis b. Staphylococcus epidemidis c. Clostridium difficile d. Streptococcus pneumoniae 13 / 44 13) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Staphylococcus stains b. Enterococcus stains c. Pseudomonas stains d. Streptococcus stains 14 / 44 14) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 2 b. Phase 4 c. Phase 3 d. Phase 1 15 / 44 15) Principal Rods Gram negative bacteria found in oral cavity:? a. Porphyromonas b. Corynebacterium c. Lactobacillus d. Eubacterium 16 / 44 16) Analytical techniques for monitoring biofilms by βDirect detectionβ π a. Gas Chromatography – Mass Spectrometry (GC-MS) b. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) c. Microscopy techniques d. High Pressure Liquid Chromatography (HPLC) 17 / 44 17) Dental caries, which answer is incorrect? a. Multifunctional microbial disease b. Characterized by demineralization of the inorganic portion c. Calcified tissues of the teeth d. Increased of the organic substance of the tooth 18 / 44 18) 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 19 / 44 19) Microorganisms in oral tissue can cause π a. Systemic infection b. Local infection c. Only local infection d. Both, local and systemic infection 20 / 44 20) 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 pathogenic causes disease d. An organism that usually is nonpathogenic causes disease 21 / 44 21) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. Detection of proteins by molecular biology technique b. Microscopy techniques c. Detection of DNA by molecular biology technique d. High Pressure Liquid Chromatography (HPLC) 22 / 44 22) In dental caries, the protective factor is π a. Antibacterials ( fluorides, Chlorhexidine, Xylitol) b. Frequent eating / drinking of fermentable carbohydrates c. Acid producing bacteria d. Poor oral hygiene 23 / 44 23) Strategy to control of biofilm pH in oral biofilm:? a. Antiflammatory agents b. Generating nutrients c. Inhibition of key microbial enzyme d. Fluoride 24 / 44 24) In dental caries, the pathogenic factor is π a. Acid producing bacteria b. Good oral hygiene c. Saliva flow and components d. Remineralization ( fluoride, Calcium, Phosphate) 25 / 44 25) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti b. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti c. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus d. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti 26 / 44 26) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Streptococcus mitis b. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) c. Streptococcus mutans d. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) 27 / 44 27) Principal Rods Gram positive bacteria found in oral cavity:? a. Eikenella b. Actinomyces c. Simonsiella d. Prevotella 28 / 44 28) Diseases are always found in oral cavity, except π a. Typhoid fever b. Syphilis c. Gonococci d. Tuberculosis 29 / 44 29) 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 – Formation of infiltrate- Destruction of connective tissues- Pus formation- Decrease tissue resistance and increase number of bacteria with virulence c. 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 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 30 / 44 30) Major bacteria cause aggressive periodontitis? a. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae b. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia d. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae 31 / 44 31) A bacterium that never found in tooth surface:? a. Streptococcus pneumoniae b. Streptococcus mitis c. Streptococcus mutans d. Streptococcus anginosus 32 / 44 32) Antimicrobial against Porphyromonas gingivalis is π a. Kanamycin b. Metronidazole c. Erythromycin d. Vancomycin 33 / 44 33) Principal Cocci Gram negative bacteria found in oral cavity:? a. Gemella b. Streptococcus c. Veillonella d. Enterococcus 34 / 44 34) Which bacteria that is not presence in buccal mucosa? a. Streptococcus mutans b. Treponema palidum c. Streptococcus anginosus d. Streptococcus mitis 35 / 44 35) Factor that does not influence to dental caries? a. Duration and frequency of exposure b. Size and form of teeth c. Individual factor d. Substrate for microorganisms 36 / 44 36) Antibiotic which is common use to treat anaerobic bacteria π a. Vancomycin b. Gentamicin c. Metronidazole d. Colistin 37 / 44 37) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 3 b. Phase 4 c. Phase 2 d. Phase 1 38 / 44 38) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Mouth b. Artificial hip implant c. Subvenous catheter d. Genital infection 39 / 44 39) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Mycobacterium tuberculosis b. Pseudomonas aeruginosa c. Klebsiella pneumoniae d. Streptococcus pneumoniae 40 / 44 40) 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. Pseudomonas aeruginosa c. Klebsiella pneumoniae d. Mycobacterium tuberculosis 41 / 44 41) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Fusiform bacillus and Borrelia vincentii b. Fusiform bacillus and Capnocytophaga sputigena c. Borrelia vincentii and Eikenella corrodens d. Borrelia vincentii and Porphyromonas endodontalis 42 / 44 42) Bacteria usually cause Pericoronitis? a. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen b. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga c. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena d. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens 43 / 44 43) 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. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , d. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , 44 / 44 44) 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 Your score isThe average score is 84% Facebook 0% Restart quiz Any comments? Send feedback