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