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