/44 4 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Principal Cocci Gram negative bacteria found in oral cavity:? a. Gemella b. Enterococcus c. Streptococcus d. Veillonella 2 / 44 2) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti b. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus c. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti d. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti 3 / 44 3) Analytical techniques for monitoring biofilms by βDirect detectionβ π a. Microscopy techniques b. High Pressure Liquid Chromatography (HPLC) c. Gas Chromatography – Mass Spectrometry (GC-MS) d. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) 4 / 44 4) In dental caries, the pathogenic factor is π a. Remineralization ( fluoride, Calcium, Phosphate) b. Good oral hygiene c. Saliva flow and components d. Acid producing bacteria 5 / 44 5) Biofilm infection is usually found in sites of primary and secondary infection except:? a. Artificial hip implant b. Mouth c. Subvenous catheter d. Genital infection 6 / 44 6) Among 4 phases of biofilm formation, the phase that is done immediately about 4 hours is:? a. Phase 1 b. Phase 3 c. Phase 2 d. Phase 4 7 / 44 7) Principal Rods Gram negative bacteria found in oral cavity:? a. Lactobacillus b. Eubacterium c. Porphyromonas d. Corynebacterium 8 / 44 8) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Pseudomonas stains b. Enterococcus stains c. Streptococcus stains d. Staphylococcus stains 9 / 44 9) Bacteria usually cause Pericoronitis? a. Fusiform bacillus, Eikenella corrodens, Alpha-hemolytic Streptococci and Capnocytophaga sputigena b. Borrelia vincentii, Bacterioides, Provetella and Eikenella corrodens c. Alpha-hemolytic Streptococci, Provetella, Bacterioides and Capnocytophaga d. Fusiform bacillus , Provetella, Eikenella corrodens and Capnocytophaga sputigen 10 / 44 10) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Staphylococcus b. Helicobacter c. Enterococcus d. Pseudomonas 11 / 44 11) Steps in order for biofilm formation:? a. Maturation and detachment, adhesion, colonization, coadhesion b. Coadhesion , adhesion, colonization, maturation and detachment c. Colonization , adhesion, coadhesion , maturation and detachment d. Adhesion, colonization, coadhesion , maturation and detachment 12 / 44 12) Specificity of Anaerobic bacteria, except:? a. Incubation culture in 1-2 days b. Black pigmentation on culture c. Foul odor when opening anaerobic jar or bag d. Grow on anaerobic media culture 13 / 44 13) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in exposure to antiseptic b. Administration of antibiotics c. Changes in salivary flow d. Changes in the immune system 14 / 44 14) A bacterium that never found in tooth surface:? a. Streptococcus pneumoniae b. Streptococcus mitis c. Streptococcus mutans d. Streptococcus anginosus 15 / 44 15) 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 2 d. Phase 3 16 / 44 16) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. High Pressure Liquid Chromatography (HPLC) b. Detection of proteins by molecular biology technique c. Microscopy techniques d. Detection of DNA by molecular biology technique 17 / 44 17) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus b. Mutans Streptococci, Lactobacilli, Clostridium c. Mutans Streptococci, Lactobacilli, Actinomyces vicosus d. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus 18 / 44 18) Diseases are always found in oral cavity, except π a. Gonococci b. Typhoid fever c. Tuberculosis d. Syphilis 19 / 44 19) 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 20 / 44 20) Which bacteria that is not presence in buccal mucosa? a. Streptococcus mutans b. Treponema palidum c. Streptococcus mitis d. Streptococcus anginosus 21 / 44 21) 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 22 / 44 22) 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 pathogenic causes disease d. An organism that usually is nonpathogenic causes disease 23 / 44 23) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Streptococcus pneumoniae b. Klebsiella pneumoniae c. Pseudomonas aeruginosa d. Mycobacterium tuberculosis 24 / 44 24) Strategy to control of nutrients in oral biofilm:? a. Fluoride b. Antimicrobial agents c. Inhibition of key microbial enzyme d. Stimulate base production 25 / 44 25) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus 26 / 44 26) The most common bacterium that is responsible for tonsillitis and pharyngitis is:? a. Streptococcus mitis b. Group-A beta hemolytic Streptococcus ( Streptococcus pyogenses) c. Group-B beta hemolytic Streptococcus ( Streptococcus agalactiae) d. Streptococcus mutans 27 / 44 27) The comment bacterium causes dental caries:? a. Pseudomonas aeruginosa b. E.coli c. Staphylococcus aureus d. Mutans Streptococci 28 / 44 28) Strategy to control of biofilm pH in oral biofilm:? a. Inhibition of key microbial enzyme b. Fluoride c. Antiflammatory agents d. Generating nutrients 29 / 44 29) A bacterium that is usually found in tongue π a. Streptococcus pneumoniae b. Staphylococcus epidemidis c. Streptococcus mitis d. Clostridium difficile 30 / 44 30) Steps in order to perform bacteriological diagnostic of oral microbiology:? a. Direct examination , Gram stain, Antimicrobial Susceptibility testing, Culture , Identification , b. Direct examination , Gram stain, Culture , Identification , Antimicrobial Susceptibility testing c. Antimicrobial Susceptibility testing, Direct examination , Gram stain, Culture , Identification , d. Identification , Direct examination , Gram stain, Culture , Antimicrobial Susceptibility testing 31 / 44 31) Which bacteria that is not always presence in saliva:? a. Streptococcus agalactiae b. Streptococcus salivarius c. Streptococcus oralis d. Streptococcus mitis 32 / 44 32) Factor that does not influence to dental caries? a. Size and form of teeth b. Duration and frequency of exposure c. Substrate for microorganisms d. Individual factor 33 / 44 33) Antibiotic which is common use to treat anaerobic bacteria π a. Colistin b. Metronidazole c. Vancomycin d. Gentamicin 34 / 44 34) 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 35 / 44 35) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. B. Actinomyces b. D. Gonococcus c. A. Streptococcus d. C. Prevotella 36 / 44 36) Dental caries, which answer is incorrect? a. Calcified tissues of the teeth b. Characterized by demineralization of the inorganic portion c. Increased of the organic substance of the tooth d. Multifunctional microbial disease 37 / 44 37) 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 38 / 44 38) Microorganisms in oral tissue can cause π a. Local infection b. Systemic infection c. Only local infection d. Both, local and systemic infection 39 / 44 39) Antimicrobial against Porphyromonas gingivalis is π a. Metronidazole b. Vancomycin c. Erythromycin d. Kanamycin 40 / 44 40) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Fusobacterium nucleatum b. Streptococcus strains c. Enterococcus stains d. Staphylococcus stains 41 / 44 41) Principal Rods Gram positive bacteria found in oral cavity:? a. Simonsiella b. Prevotella c. Actinomyces d. Eikenella 42 / 44 42) Principal Cocci Gram positive bacteria found in oral cavity:? a. Neisseria b. Peptostreptococcus c. Veillonella d. Moraxella 43 / 44 43) Major bacteria cause aggressive periodontitis? a. Capnocytophaga sputigena, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae b. Prevotella intermedia, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae c. Actinobaccilus actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae d. Eikenella corrodens, Capnocytophaga sputigena, Actinobaccilus actinomycetemcomitans, Prevotella intermedia 44 / 44 44) Strategy to control of rendox potential in oral biofilm:? a. Fluoride b. Stimulate base production c. Inhibition of key microbial enzyme d. Oxygenating agents Your score isThe average score is 38% Facebook 0% Restart quiz Any comments? Send feedback
