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