/44 471 Oral Microbiology Preparation (Dr. Hem Sopheak) 1 / 44 1) Steps in order for biofilm formation:? a. Adhesion, colonization, coadhesion , maturation and detachment b. Maturation and detachment, adhesion, colonization, coadhesion c. Coadhesion , adhesion, colonization, maturation and detachment d. Colonization , adhesion, coadhesion , maturation and detachment 2 / 44 2) Factor that does not influence to dental caries? a. Substrate for microorganisms b. Size and form of teeth c. Individual factor d. Duration and frequency of exposure 3 / 44 3) A bacterium that never found in tooth surface:? a. Streptococcus pneumoniae b. Streptococcus anginosus c. Streptococcus mutans d. Streptococcus mitis 4 / 44 4) Dental caries, which answer is incorrect? a. Calcified tissues of the teeth b. Multifunctional microbial disease c. Increased of the organic substance of the tooth d. Characterized by demineralization of the inorganic portion 5 / 44 5) Strategy to control of rendox potential in oral biofilm:? a. Fluoride b. Inhibition of key microbial enzyme c. Stimulate base production d. Oxygenating agents 6 / 44 6) Antimicrobial against Porphyromonas gingivalis is π a. Kanamycin b. Vancomycin c. Erythromycin d. Metronidazole 7 / 44 7) Bacteria usually cause Necrotizing Ulcerative Gingivitis? a. Borrelia vincentii and Eikenella corrodens b. Borrelia vincentii and Porphyromonas endodontalis c. Fusiform bacillus and Capnocytophaga sputigena d. Fusiform bacillus and Borrelia vincentii 8 / 44 8) Which bacteria that is not always presence in saliva:? a. Streptococcus mitis b. Streptococcus salivarius c. Streptococcus agalactiae d. Streptococcus oralis 9 / 44 9) Antibiotic which is common use to treat anaerobic bacteria π a. Vancomycin b. Metronidazole c. Gentamicin d. Colistin 10 / 44 10) 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 pathogenic causes disease d. An organism that usually is nonpathogenic causes disease 11 / 44 11) Principal Rods Gram negative bacteria found in oral cavity:? a. Corynebacterium b. Porphyromonas c. Lactobacillus d. Eubacterium 12 / 44 12) 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 13 / 44 13) Analytical techniques for monitoring biofilms by βDirect detectionβ π a. High Pressure Liquid Chromatography (HPLC) b. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) c. Microscopy techniques d. Gas Chromatography – Mass Spectrometry (GC-MS) 14 / 44 14) A bacterium from buccal mucosa that can cause lung infection in chronic obstructive pulmonary infections in cystic fibrosis patients is:? a. Pseudomonas aeruginosa b. Klebsiella pneumoniae c. Streptococcus pneumoniae d. Mycobacterium tuberculosis 15 / 44 15) Analytical techniques for monitoring biofilms by βIndirect detectionβ π a. Detection of DNA by molecular biology technique b. Detection of proteins by molecular biology technique c. Microscopy techniques d. High Pressure Liquid Chromatography (HPLC) 16 / 44 16) Major bacteria cause periodontitis π a. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Pneumococcus b. Fusobacterium nucleatum, Petostreptococcus micros, Streptococci, Borrela vincenti c. Fusobacterium nucleatum, Petostreptococcus micros, Enterococcus, Borrela vincenti d. Fusobacterium nucleatum, E.coli, Streptococci, Borrela vincenti 17 / 44 17) Which bacteria that is not presence in buccal mucosa? a. Treponema palidum b. Streptococcus anginosus c. Streptococcus mutans d. Streptococcus mitis 18 / 44 18) Microorganisms in oral tissue can cause π a. Local infection b. Only local infection c. Systemic infection d. Both, local and systemic infection 19 / 44 19) Major bacteria usually cause dental caries:? a. Mutans Streptococci, Lactobacilli, Clostridium b. Streptococcus pneumoniae, Lactobacilli, Actinomyces vicosus c. Mutans Streptococci, Lactobacilli, Actinomyces vicosus d. Mutans Streptococci, Staphylococcus aureus, Actinomyces vicosus 20 / 44 20) On tooth surface, bacteria that participate actively in adhesion of primary colonizers? a. Staphylococcus stains b. Streptococcus stains c. Pseudomonas stains d. Enterococcus stains 21 / 44 21) 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 22 / 44 22) Among 4 phases of biofilm formation, the phase that is done the longest, about 7-14 days is:? a. Phase 4 b. Phase 1 c. Phase 3 d. Phase 2 23 / 44 23) 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 24 / 44 24) Diseases are always found in oral cavity, except π a. Tuberculosis b. Gonococci c. Syphilis d. Typhoid fever 25 / 44 25) 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 26 / 44 26) 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 27 / 44 27) Strategy to control of nutrients in oral biofilm:? a. Antimicrobial agents b. Fluoride c. Inhibition of key microbial enzyme d. Stimulate base production 28 / 44 28) 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 29 / 44 29) In dental caries, the protective factor is π a. Poor oral hygiene b. Frequent eating / drinking of fermentable carbohydrates c. Antibacterials ( fluorides, Chlorhexidine, Xylitol) d. Acid producing bacteria 30 / 44 30) Infection in oral cavity by oral flora, which proposition is inexact? a. Changes in the immune system b. Administration of antibiotics c. Changes in exposure to antiseptic d. Changes in salivary flow 31 / 44 31) Principal Cocci Gram negative bacteria found in oral cavity:? a. Enterococcus b. Streptococcus c. Gemella d. Veillonella 32 / 44 32) The most common bacteria that are always presence in mouth as a normal flora, which proposition is inexact? a. D. Gonococcus b. C. Prevotella c. B. Actinomyces d. A. Streptococcus 33 / 44 33) 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 34 / 44 34) A bacterium that is usually found in tongue π a. Streptococcus mitis b. Streptococcus pneumoniae c. Staphylococcus epidemidis d. Clostridium difficile 35 / 44 35) Infections of the mucosa are more usually associated with transient oral bacteria, which one is incorrect? a. Helicobacter b. Staphylococcus c. Enterococcus d. Pseudomonas 36 / 44 36) Major bacteria cause chronic periodontitis:? a. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Streptococcus anginosus b. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae,Stphylococcus aureus c. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, E.coli d. Fusobacterium nucleatum, Porphyromonas endodontalis, Prevotella tannerae, Pseudomonas aeruginosa 37 / 44 37) Principal Cocci Gram positive bacteria found in oral cavity:? a. Peptostreptococcus b. Neisseria c. Veillonella d. Moraxella 38 / 44 38) 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. Streptococcus pneumoniae c. Mycobacterium tuberculosis d. Klebsiella pneumoniae 39 / 44 39) The comment bacterium causes dental caries:? a. Mutans Streptococci b. Pseudomonas aeruginosa c. Staphylococcus aureus d. E.coli 40 / 44 40) In dental caries, the pathogenic factor is π a. Saliva flow and components b. Good oral hygiene c. Remineralization ( fluoride, Calcium, Phosphate) d. Acid producing bacteria 41 / 44 41) 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 , 42 / 44 42) Strategy to control of biofilm pH in oral biofilm:? a. Inhibition of key microbial enzyme b. Fluoride c. Antiflammatory agents d. Generating nutrients 43 / 44 43) A major bacteria that is responsible in facilitating adhesion by other bacteria is:? a. Enterococcus stains b. Fusobacterium nucleatum c. Staphylococcus stains d. Streptococcus strains 44 / 44 44) Principal Rods Gram positive bacteria found in oral cavity:? a. Simonsiella b. Prevotella c. Eikenella d. Actinomyces Your score isThe average score is 84% Facebook 0% Restart quiz Any comments? Send feedback
