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