/44 130 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Which bacteria that is not presence in buccal mucosa? a. Streptococcus mitis b. Treponema palidum c. Streptococcus mutans d. Streptococcus anginosus 2 / 44 2) 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 3 / 44 3) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in salivary flow b. Administration of antibiotics c. Changes in exposure to antiseptic d. Changes in the immune system 4 / 44 4) Principal Rods Gram negative bacteria found in oral cavity:? a. Eubacterium b. Corynebacterium c. Lactobacillus d. Porphyromonas 5 / 44 5) A bacterium that is usually found in tongue π a. Clostridium difficile b. Streptococcus mitis c. Streptococcus pneumoniae d. Staphylococcus epidemidis 6 / 44 6) 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 – Pus formation- Formation of infiltrate – Destruction of connective tissues – Decrease tissue resistance and increase number of bacteria with virulence c. 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 d. 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 7 / 44 7) Antimicrobial against Porphyromonas gingivalis is π a. Kanamycin b. Metronidazole c. Erythromycin d. Vancomycin 8 / 44 8) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 2 b. Phase 1 c. Phase 4 d. Phase 3 9 / 44 9) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Helicobacter b. Pseudomonas c. Staphylococcus d. Enterococcus 10 / 44 10) Strategy to control of biofilm pH in oral biofilm:? a. Antiflammatory agents b. Generating nutrients c. Inhibition of key microbial enzyme d. Fluoride 11 / 44 11) Strategy to control of nutrients in oral biofilm:? a. Fluoride b. Inhibition of key microbial enzyme c. Stimulate base production d. Antimicrobial agents 12 / 44 12) Microorganisms in oral tissue can cause π a. Only local infection b. Local infection c. Systemic infection d. Both, local and systemic infection 13 / 44 13) 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 14 / 44 14) Major bacteria cause aggressive periodontitis? a. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae b. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia 15 / 44 15) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Streptococcus mitis b. Streptococcus mutans c. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) d. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) 16 / 44 16) 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 17 / 44 17) Dental caries, which answer is incorrect? a. Calcified tissues of the teeth b. Increased of the organic substance of the tooth c. Characterized by demineralization of the inorganic portion d. Multifunctional microbial disease 18 / 44 18) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. High Pressure Liquid Chromatography (HPLC) b. Microscopy techniques c. Detection of DNA by molecular biology technique d. Detection of proteins by molecular biology technique 19 / 44 19) Principal Cocci Gram negative bacteria found in oral cavity:? a. Streptococcus b. Enterococcus c. Gemella d. Veillonella 20 / 44 20) 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. Mycobacterium tuberculosis d. Klebsiella pneumoniae 21 / 44 21) Principal Cocci Gram positive bacteria found in oral cavity:? a. Neisseria b. Peptostreptococcus c. Veillonella d. Moraxella 22 / 44 22) Steps in order for biofilm formation:? a. Colonization , adhesion, coadhesion , maturation and detachment b. Maturation and detachment, adhesion, colonization, coadhesion c. Adhesion, colonization, coadhesion , maturation and detachment d. Coadhesion , adhesion, colonization, maturation and detachment 23 / 44 23) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Streptococcus stains b. Pseudomonas stains c. Staphylococcus stains d. Enterococcus stains 24 / 44 24) In dental caries, the pathogenic factor is π a. Acid producing bacteria b. Saliva flow and components c. Good oral hygiene d. Remineralization ( fluoride, Calcium, Phosphate) 25 / 44 25) Bacteria usually cause Pericoronitis? a. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen b. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga c. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens d. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena 26 / 44 26) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Subvenous catheter b. Genital infection c. Artificial hip implant d. Mouth 27 / 44 27) Oral opportunistic infection happens when:? a. An organism that usually is pathogenic causes 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 nonpathogenic has no opportunity to cause disease 28 / 44 28) 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 29 / 44 29) 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 30 / 44 30) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Borrelia vincentii and Porphyromonas endodontalis b. Fusiform bacillus and Capnocytophaga sputigena c. Fusiform bacillus and Borrelia vincentii d. Borrelia vincentii and Eikenella corrodens 31 / 44 31) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti b. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti c. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus d. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti 32 / 44 32) A bacterium that never found in tooth surface:? a. Streptococcus mitis b. Streptococcus pneumoniae c. Streptococcus anginosus d. Streptococcus mutans 33 / 44 33) 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 34 / 44 34) The comment bacterium causes dental caries:? a. E.coli b. Pseudomonas aeruginosa c. Mutans Streptococci d. Staphylococcus aureus 35 / 44 35) Factor that does not influence to dental caries? a. Duration and frequency of exposure b. Size and form of teeth c. Substrate for microorganisms d. Individual factor 36 / 44 36) 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. Mycobacterium tuberculosis d. Streptococcus pneumoniae 37 / 44 37) Which bacteria that is not always presence in saliva:? a. Streptococcus mitis b. Streptococcus salivarius c. Streptococcus oralis d. Streptococcus agalactiae 38 / 44 38) In dental caries, the protective factor is π a. Antibacterials ( fluorides, Chlorhexidine, Xylitol) b. Poor oral hygiene c. Frequent eating / drinking of fermentable carbohydrates d. Acid producing bacteria 39 / 44 39) Diseases are always found in oral cavity, except π a. Gonococci b. Tuberculosis c. Typhoid fever d. Syphilis 40 / 44 40) Steps in order to perform bacteriological diagnostic of oral microbiology:? a. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing b. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , c. Direct examination , Gram stain, Culture , Identification , Antimicrobial Susceptibility testing d. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , 41 / 44 41) Antibiotic which is common use to treat anaerobic bacteria π a. Gentamicin b. Metronidazole c. Vancomycin d. Colistin 42 / 44 42) Principal Rods Gram positive bacteria found in oral cavity:? a. Eikenella b. Actinomyces c. Simonsiella d. Prevotella 43 / 44 43) Strategy to control of rendox potential in oral biofilm:? a. Fluoride b. Inhibition of key microbial enzyme c. Oxygenating agents d. Stimulate base production 44 / 44 44) Specificity of Anaerobic bacteria, except:? a. Incubation culture in 1-2 days b. Grow on anaerobic media culture c. Black pigmentation on culture d. Foul odor when opening anaerobic jar or bag Your score isThe average score is 87% Facebook 0% Restart quiz Any comments? Send feedback
