Oral Surgery II, Dr.Chhev Eangseng (51-100)

51. Plain Catgut suture’s strength retention time?

5 days

7 days

9 days

11 days

52. Which one is wrong about surgical silk suture?

Ease of handling

Good knot security

Withstand action of body fluid

Should be the choice of usage in present of infection

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

1 year

2 years

3 years

4 years

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

12 days

16 days

20 days

24 days

55. Which suture has antibacterial effect?

Chromic Gut suture

Vicryl Plus suture

Vicryl Rapid suture

Prolene suture

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

6 – 8 days

8 - 10 days

10 – 14 days

14 – 18 days

57. Which one is wrong about Nylon suture?

Minimal tissue reaction

Has good memory

Non-pliable when moist

Useful for skin suture

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

Minimal tissue reaction

Tensile strength for 4 years

Used in infected and contaminated wounds

Flexible

59. Things to consider when doing suture selection?

Knot-holding characteristics of the suture material

The tissues to be repaired

The tensile strength of the suture material

All are correct

60. Which one is wrong about interrupted simple suture?

Interferences between each stitch

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

Loosening one will not produce loosening of the other

Strong and can be used in areas of stress

61. Which one is wrong about simple continuous suture?

Rapid technique and distributes tension uniformly

More water tight closure

Only 2 knots with associated tags

Free of Interferences between each stitch

62. Which one is wrong about simple locking suture?

Will avoid multiple knots

Distributes tension uniformly

Less Water tight closure

Prevents excessive tightening

63. Which one is wrong about vertical mattress suture?

Interfering with healing

To get eversion of wound margins slightly

Added support wound

For maximum tissue approximation

64. Which one is wrong about horizontal mattress suture?

Bringing greater areas of raw tissue into contact

Prevents the flap from being inverted into the cavity

Control post-operative hemorrhage from gingiva around the socket

Good blood supply to edge of incision

65. Which one is wrong about principle of knotting?

Use the simplest knot that will prevent slippage

Tying the knot as small as possible

Excessive tension

Avoid friction

66. Knotting hints?

Tying sutures too tightly strangulates the tissue

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

Limiting extra throws to the knot

All are correct

67. Please choose the wrong one about suturing?

Close deep wounds in layers

Avoid retrieving needle by tip

Adequate tissue bite to prevent tearing

More tension is good to keep the tissue in place

68. Which one is wrong about suturing?

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

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

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

Knot must not lie on incision line

69. Which one is wrong about needle?

Needle should enter perpendicular to tissue surface

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

Needle passed along its curve

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

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

To prevent strangulation of the tissue

To allow escape of the serum or inflammatory exudate

To get more strength of the wound

To ease the suturing procedure

71. Symptoms of cellulitis?

Localized pain

Erythema

Swelling

All are correct

72. Truth about abscess?

The stage after cellulitis

No blood supply

Antibiotic cannot penetration on abscess

All are correct

73. The most common oral bacterial infection is?

Periapical infection

Periodontal infection

Herpes labialis infection

Periapical infection and periodontal infection

74. Cellulitis stage of bacterial odontogenic infection?

days 0 - 3

days 3 – 5

days 5 – 7

days 7 – 9

75. Inoculation stage of bacterial odontogenic infection?

days 0 – 3

days 3 - 5

days 5 – 7

days 7 – 9

76. Abscess stage of bacterial odontogenic infection?

days 0 - 3

days 3 - 5

days 5 – 7

days 7 – 9

77. Serial stages of bacterial odontogenic infection?

Inoculation, cellulitis, abscess and resolution stage

Cellulitis, Inoculation, abscess and resolution stage

Abscess, inoculation, cellulitis, and resolution stage

Resolution, abscess, inoculation, and cellulitis stage

78. Spread of infection?

Direct spread via tissue planes and spaces

Lymphatic spread

Haematological spread

All are correct

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

High protein binding

Low pH

High pH

Higher temperature

80. What is bacteremia?

Blood poisoning, especially that caused by bacteria or their toxins

Presence of bacteria in the blood

Presence of bacteria in the brain

Presence of bacteria in the bone marrow

81. What is Septicemia?

Blood poisoning, especially that caused by bacteria or their toxins

Presence of bacteria in the blood

Presence of bacteria in the brain

Presence of bacteria in the bone marrow

82. Ophthalmic symptoms of cavernous sinus thrombosis?

Unable to move eye (ophthalmoplegia)

Drooping upper eyelid (ptosis)

Extrusion of the eye (proptosis)

All are correct

83. Symptoms of acute maxillary sinusitis?

Mid-facial pain

Upper posterior teeth are tender to percussion

Pain varies with head posture

All are correct

84. The following picture shows?

Sub-lingual space infection

Sub-mylohyoid infection

Submandibular infection

All are not corrects

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

Submandibular spaces

Sublingual spaces

Submandibular and sublingual spaces

All are not corrects

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

Aerobic bacteria

Anaerobic bacteria

Aerobic bacteria and Anaerobic bacteria

All are not corrects

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

Richer blood supply

Poorer blood supply

Genetic factor

All are corrects

88. Osteomyelitis treatment?

Aggressive surgical debridement of necrotic bone

Intravenous antibiotics with good bone penetration

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

All are not corrects

89. Treatment of odontogenic infection?

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

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

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

All are correct

90. What is the antibiotic prophylaxis?

Prevention of infection complication using antimicrobial therapy

Prevention supra-infection

Prevent the germ to spread in the facial space

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

91. Amoxicillin + clavulanic acid combination?

Inhibits beta lactamase

Acts against S Aureus,

H influenza and E coli

None of above

92. A drain is placed?

For the air to come in

To allow further pus and fluid to drain

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

All are corrects

93. Cause of abscess treatment failure?

Inadequate drainage and antibiotic failure or wrong antibiotics

Immunosuppressed patient

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

All are correct

94. Which is the correct statement define antibiotic resistance?

The ability of antibiotic killing bacterial

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

The ability of bacteria synthesis under the development period

All are not corrects

95. A triangular flap has been used commonly for?

Surgical removal of upper wisdom tooth

Surgical removal of lower wisdom tooth

Surgical removal of periapical cyst

All are correct

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

Apicoectomy

Surgical removal of mandibular torus

Surgical removal of palatal torus

All are not correct

97. The secondary intension healing means?

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

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

Delay wound healing

All are correct

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

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

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

The root is sometimes displaced into the maxillary sinus

All are correct

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

The vital root tip is 2-5 millimeters in length

The vital root tip is close to maxillary sinus

The vital root tip is close to lower inferior alveolar nerve

All are correct

100. The primary intension healing means?

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

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

Delay wound healing

All are not correct

Oral Surgery II, Dr.Chhev Eangseng (51-100)

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