Year5/Oral surgery II/Dr.Chhiv Eang seng/50-100

51. Plain Catgut suture’s strength retention time?

σ� 7 days

σ� 5 days

σ� 9 days

σ� 11 days

52. Which one is wrong about surgical silk suture?

σ� Should be the choice of usage in present of infection

σ� Withstand action of body fluid

σ� Good knot security

σ� Ease of handling

53. Surgical silk suture cannot be detected in tissues after?

σ� 2 years

σ� 3 years

σ� 4 years

σ� 1 year

54. Vircryl-Rapid suture could support wound up to?

σ� 12 days

σ� 16 days

σ� 20 days

σ� 24 days

55. Which suture has antibacterial effect?

σ� Vicryl Plus suture

σ� Chromic Gut suture

σ� Vicryl Rapid suture

σ� Prolene suture

56. Chromic Gut suture’s strength retention time at least?

σ� 10 – 14 days

σ� 8 - 10 days

σ� 6 – 8 days

σ� 14 – 18 days

57. Which one is wrong about Nylon suture?

σ� Non-pliable when moist

σ� Useful for skin suture

σ� Has good memory

σ� Minimal tissue reaction

58. Which one is wrong about POLYPROPYLENE (PROLENE) suture?

σ� Tensile strength for 4 years

σ� Used in infected and contaminated wounds

σ� Flexible

σ� Minimal tissue reaction

59. Things to consider when doing suture selection?

σ� All are correct

σ� The tensile strength of the suture material

σ� The tissues to be repaired

σ� Knot-holding characteristics of the suture material

60. Which one is wrong about interrupted simple suture?

σ� Interferences between each stitch

σ� Placed 4-8 mm apart to close large wounds, so that tension is shared

σ� Loosening one will not produce loosening of the other

σ� Strong and can be used in areas of stress

61. Which one is wrong about simple continuous suture?

σ� Free of Interferences between each stitch

σ� Only 2 knots with associated tags

σ� More water tight closure

σ� Rapid technique and distributes tension uniformly

62. Which one is wrong about simple locking suture?

σ� Less Water tight closure

σ� Prevents excessive tightening

σ� Distributes tension uniformly

σ� Will avoid multiple knots

63. Which one is wrong about vertical mattress suture?

σ� Interfering with healing

σ� To get eversion of wound margins slightly

σ� Added support wound

σ� For maximum tissue approximation

64. Which one is wrong about horizontal mattress suture?

σ� Good blood supply to edge of incision

σ� Bringing greater areas of raw tissue into contact

σ� Prevents the flap from being inverted into the cavity

σ� Control post-operative hemorrhage from gingiva around the socket

65. Which one is wrong about principle of knotting?

σ� Excessive tension

σ� Use the simplest knot that will prevent slippage

σ� Tying the knot as small as possible

σ� Avoid friction

66. Knotting hints?

σ� All are correct

σ� Placing the final throw as horizontally as possible to keep knot flat

σ� Limiting extra throws to the knot

σ� Tying sutures too tightly strangulates the tissue

67. Please choose the wrong one about suturing?

σ� More tension is good to keep the tissue in place

σ� Avoid retrieving needle by tip

σ� Adequate tissue bite to prevent tearing

σ� Close deep wounds in layers

68. Which one is wrong about suturing?

σ� The bite should be about 4-6 mm from the wound margin

σ� Usually the needle to be passed from mobile side to the fixed side from thinner to thicker & from deeper to superficial flap.

σ� The tissues should not be closed under tension, since they will either tear or become necrotic around the suture

σ� Knot must not lie on incision line

69. Which one is wrong about needle?

σ� Needle grasped at 1/2th to half the distance from eye

σ� Needle passed along its curve

σ� The bite should be equal on both sides of the wound margin

σ� Needle should enter perpendicular to tissue surface

70. The distance between sutures to another should be about 3-4 mm apart?

σ� To ease the suturing procedure

σ� To get more strength of the wound

σ� To allow escape of the serum or inflammatory exudate

σ� To prevent strangulation of the tissue

71. Symptoms of cellulitis?

σ� All are correct

σ� Swelling

σ� Erythema

σ� Localized pain

72. Truth about abscess?

σ� All are correct

σ� Antibiotic cannot penetration on abscess

σ� No blood supply

σ� The stage after cellulitis

73. The most common oral bacterial infection is?

σ� Periapical infection and periodontal infection

σ� Herpes labialis infection

σ� Periodontal infection

σ� Periapical infection

74. Cellulitis stage of bacterial odontogenic infection?

σ� days 3 – 5

σ� days 0 - 3

σ� days 5 – 7

75. Inoculation stage of bacterial odontogenic infection?

σ� days 0 – 3

σ� days 3 - 5

σ� days 5 – 7

σ� days 7 – 9

76. Abscess stage of bacterial odontogenic infection?

σ� days 5 – 7

σ� days 3 - 5

σ� days 0 - 3

σ� days 7 – 9

77. Serial stages of bacterial odontogenic infection?

σ� Inoculation, cellulitis, abscess and resolution stage

σ� Cellulitis, Inoculation, abscess and resolution stage

σ� Abscess, inoculation, cellulitis, and resolution stage

σ� Resolution, abscess, inoculation, and cellulitis stage

78. Spread of infection?

σ� All are correct

σ� Direct spread via tissue planes and spaces

σ� Lymphatic spread

σ� Haematological spread

79. Why local anesthesia has less effect after injecting at the infection side?

σ� Low pH

σ� High protein binding

σ� High pH

σ� Higher temperature

80. What is bacteremia?

σ� Presence of bacteria in the blood

σ� Blood poisoning, especially that caused by bacteria or their toxins

σ� Presence of bacteria in the brain

σ� Presence of bacteria in the bone marrow

81. What is Septicemia?

σ� Presence of bacteria in the blood

σ� Blood poisoning, especially that caused by bacteria or their toxins

σ� Presence of bacteria in the brain

σ� Presence of bacteria in the bone marrow

82. Ophthalmic symptoms of cavernous sinus thrombosis?

σ� All are correct

σ� Extrusion of the eye (proptosis)

σ� Unable to move eye (ophthalmoplegia)

83. Symptoms of acute maxillary sinusitis?

σ� All are correct

σ� Mid-facial pain

σ� Pain varies with head posture

σ� Upper posterior teeth are tender to percussion

85. Ludwig’s angina is an acute severe bilateral cellulitis of?

σ� Submandibular and sublingual spaces

σ� Sublingual spaces

σ� All are not corrects

σ� Submandibular spaces

86. Actinomycosis a chronic disease of soft tissue caused primarily by?

σ� Anaerobic bacteria

σ� Aerobic bacteria and Anaerobic bacteria

σ� All are not corrects

σ� Aerobic bacteria

87. Osteomyelitis is more common in the mandible due to?

σ� Poorer blood supply

σ� Richer blood supply

σ� Genetic factor

σ� All are corrects

88. Osteomyelitis treatment?

σ� Aggressive surgical debridement of necrotic bone & Intravenous antibiotics with good bone penetration

σ� Intravenous antibiotics with good bone penetration

σ� Aggressive surgical debridement of necrotic bone

σ� All are not corrects

89. Treatment of odontogenic infection?

σ� All are correct

σ� Antibiotics and Supportive therapy (fluids, rest, nutrition, analgesia)

σ� Drain pus and maintain drainage (place a drain if necessary)

σ� Remove the cause whenever possible (e.g. Extract the tooth)

90. What is the antibiotic prophylaxis?

σ� Prevention of infection complication using antimicrobial therapy

σ� Prevention supra-infection

σ� Prevent the germ to spread in the facial space

σ� Prevention supra-infection and Prevent the germ to spread in the facial space

91. Amoxicillin + clavulanic acid combination?

σ� Inhibits beta lactamase

σ� Acts against S Aureus,

σ� H influenza and E coli

σ� None of above

92. A drain is placed?

σ� To allow further pus and fluid to drain

σ� For the air to come in

σ� For the air to come in and to allow further pus and fluid to drain

σ� All are corrects

93. Cause of abscess treatment failure?

σ� All are correct

σ� Foreign body (retained root, non-vital piece of bone)

σ� Immunosuppressed patient

σ� Inadequate drainage and antibiotic failure or wrong antibiotics

94. Which is the correct statement define antibiotic resistance?

σ� The ability of antibiotic killing bacterial

σ� The ability of bacteria and other microorganisms to resist the effects of an antibiotic.

σ� The ability of bacteria synthesis under the development period

σ� All are correct

95. A triangular flap has been used commonly for?

σ� All are correct

σ� Surgical removal of periapical cyst

σ� Surgical removal of lower wisdom tooth

σ� Surgical removal of upper wisdom tooth

96. Semi-lunar flap has been used commonly in oral surgery for?

σ� Apicoectomy

σ� Surgical removal of mandibular torus

σ� Drooping upper eyelid (ptosis)  Surgical removal of palatal torus

σ� All are not correct

97. The secondary intension healing means?

σ� Wound involves considerable tissue lose and let the wound to heal spontaneously

σ� The wound that is healing in the surgical incision which the flap was sutured edge to edge

σ� Delay wound healing

σ� All are correct

98. A common mistake to try to remove broken roots without surgery by using only elevators could cause?

σ� All are correct

σ� The root is sometimes displaced into the maxillary sinus

σ� The root is sometimes displaced into the infra-temporal fossa for unerupted upper third molar

σ� The root is sometimes displaced into the inferior alveolar nerve canal for lower third molar

99. A fractured root tip could be considered to leave when?

σ� All are correct

σ� The vital root tip is close to lower inferior alveolar nerve

σ� The vital root tip is 2-5 millimeters in length

σ� The vital root tip is close to maxillary sinus

100. The primary intension healing means?

σ� The wound that is healing in the surgical incision which the flap was sutured edge to edge

σ� Delay wound healing

σ� Wound involves considerable tissue lose and let the wound to heal spontaneously

σ� All are not correct

84. The following picture shows?

σ� Submandibular infection

σ� Sub-lingual space infection

σ� Sub-mylohyoid infection

σ� All are not corrects

Year5/Oral surgery II/Dr.Chhiv Eang seng/50-100

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