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