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