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