OMF_Prof.Keit_Lysan(51-100)

51. Which one of the following is NOT the treatment option of unerupted maxillary canines?

Surgical removal of unerupted canine

Interceptive removal of primary canine

No treatment or leave in-situ

Surgical exposure with orthodontic alignment

Laser treatment

52. What are the criteria for surgical removal of unerupted maxillary canines?

Patient is older than 16 years old

Good contact between premolar & lateral incisor

Poor prognosis for alignment

Good aesthetic of a retained deciduous canine with a long root

Unwilling to wear orthodontic appliance

All of the above

53. When aspirate a cystic lesion which shows cholesterol, what type of cyst might it be?

54. When aspirate a cyst-like lesion which shows blood, what type of lesion might it be?

55. When aspirate a cyst-like lesion which shows air, what type of lesion/structure might it be?

57. Which one of the followings is NOT needle stick injury precautions?

Sharps should be passed via a receiver, not hand to hand

Use only plastic instruments

Verbal announcements should be made when passing sharps

Safety devices should be used for storage of needles and blades eg. Magnetic mats

Instruments should be used for tissue retraction- hands should never be used for retraction, to grasp needles, and to load and unload needles and scalpels.

58. Which of the following is/are the clinical factors predicting the difficulty of extractions?

59. Which of the following is NOT the principles of flap designs?

60. What happening when an incision is not placed over sound bone?

61. When a fractured root tip can be left in-situ?

The root tip is smaller than mm in an infected root

For small root fragments as the risk of removing them may cause potential complications

The infected root tip is closed to the maxillary sinus

The infected root is close to the inferior alveolar nerve

All of the above

None of the above

62. Which one of the following is NOT the perioperative attire for infection control procedures?

Mask and gloves

Protective eye wears safety glasses

Head light

Footwear or easily cleaned shoes

63. When our hands are needed to be washed?

Before and after touching patients

Before and after a procedure

After touching patient's surrounding and blood

All of the above

64. What should you do when you get needle and sharp injury?

Conduct a risk assessment of degree of risk

Obtain verbal consent from patient to test for Hep B, Hep C and HIV

Vaccinate within 72 hours if required

All of the above

65. Which one of the followings is NOT needle stick injury precaution?

Sharps should be passed via a receiver, not hand to hand

Use only plastic instruments

Verbal announcements should be made when passing sharps

Safety devices should be used for storage of needles and blades eg. Magnetic mats

66. According to NICE guideline, the indication for surgical removal of a third molar is:?

Patient with chronic headache

Patient with lower incisor crowding

Patient with second or subsequent episodes of pericoronitis

Patient with deep impaction pressing on the nerve

67. Which of the following statements are NOT the treatments of acute pericoronitis?

Extraction of opposing tooth

Apply acid around the operculome and operculectomy

Prescribe potent analgesics

Irrigation around the tooth crown with Chlorhexidine

68. What are the risks for surgical removal of the third mandibular molars?

69. What are the contraindications for removal of the third molars?

Acute infection with severe trismus

Possible damage to adjacent structures

Compromised physical status

Completely asymptomatic impacted teeth in elderly individuals

All of the above

70. When assessing mandibular wisdom teeth, which of the followings indicate that the teeth are difficult to remove?

Young patients

Elderly patient or disto-angular impaction with dense bone

Mesio-angular impaction with conical roots

Verical angulation which is fully erupted

71. What are the radiographic signs indicative of possible inferior alveolar nerve injury during surgical removal of unerupted mandibular wisdom teeth?

72. In assessment of the degree of difficulty of 3rd molar surgery, which one of the followings is NOT the local factors?

Type of impaction, angulation, depth of application, morphology

Mouth opening (trismus)

Presence/absence of opposing/adjacent tooth and cheek flexibility

Presence of infection (pericoronitis)

Gender (male or female)

73. Why age of the patient is important in assessing the difficulty of surgical removal?

Morbidity and intra and post-operative complications increase with age

The younger, the more difficult surgery

The older, the easier the surgery

The fibrous tissues increases with age

74. Which flap design is the most common flap for surgical removal of mandibular third molars?

Distal limited flap

Envelop flap

Buccal extension flap

Triangular flap

75. What is the indication for distal limited flap?

For large crown with diverged roots

For horizontally impacted tooth closed to ID nerve

For distoangular impaction with dense bone

For conical roots tooth that can be easily elevated

76. What is the problem with buccal extension flap using for surgical removal of mandibular third molars?

Too small exposure

Periodontal problem

Hard to retract the flap

Risk of long buccal nerve injury

77. What type of burr is usually used for surgical removal of third molars?

Fissure high speed burr

Round diamond high speed burr

Round and fissure low speed burrs

Round diamond low speed burr

78. How do you decide the tooth section line in unerupted mandibular third molars?

Depth of impaction

Angulation and root anatomy

Bone density

Inferior dental canal

79. When do we usually remove sutures following surgical removal third molars?

In 3 days

In 4 days

In 5 to 7 days

15 to 30 days

80. What blade number is used to make incision along the gingival crest distal to tooth #17 and #27 when surgically remove maxillary third molars?

Blade #11

Blade #12

Blade #15

Blade 16

81. How do you prevent inferior dental nerve injury during surgical removal of mandibular wisdom teeth?

Use atraumatic surgical techniques and perform coronectomy

Use high speed to cut crowns

Raise small flap

Always take CT scan

82. What are the contraindications for coronectomy?

Mobile tooth (advanced periodontitis)

Caries with potential pulp involvement and periapical abscess

Associated with cyst which won’t resolve with the root left in place

Nerve too close to the coronectomy cut

All of the above

83. In coronectomy, how far from the CEJ of the crown do you need to cut?

1mm to 2mm below the CEJ

2mm to 4mm below the CEJ

4mm to 6mm below the CEJ

2cm to 4cm below the CEJ

84. Which one of the following is NOT the specific warning after coronectomy?

Root exposure migration in the later date

Paresthesia of the upper lip

Later removal of roots

Roots inadvertently removed at the time of attempted coronectomy

85. Which flap design is best indicated for an apicectomy of maxillary incisors with ceramic crowns on?

Seminlunar flap

Triangular flap

Modified scallop semilunar

Rectangular flap

86. What are the radiographic features of radicular cysts?

Round/ovoid, well-defined, unilocular radiolucency with radiopaque margin

Diplacement of teeth

Root resorption

All of the above

87. Which of the following is NOT the factor to consider in flap design?

Depth of the buccal sulcus

Gingival biotypes

Position & size of labial fraenum and muscle attachments

Vital structures

88. Which of the retrograde filling material for apicectomy is at risk of scattering (running to surrounding areas) in soft tissues?

89. What are the disadvantages of semilunar flap?

Poor access and incision often over the lesion

Difficult moisture control (haemorrhage) and difficult to reposition

Uncomfortable during healing and leaves scars

All of the above

90. What are the advantages of Luebke-Oschenbein Flap (Modified scalloped semilunar)?

91. Which one of the following statement is correct for apical ressection in apecectomy?

25 degree bevel

0-degree bevel root resection

35 degree bevel

45 degree bevel

92. Which one of the following is NOT the desirable characteristic of root-end filling materials?

93. What does successful apicectomy of a non-vital tooth depends on?

Small flap design

Proper RCT before apicectomy with retrograde filling

Amalgam retrograde filling

Good sutures

94. What are the criteria for simple surgical exposure (Window Technique) of impacted maxillary canines?

95. What are the indications for apical positioned flap for maxillary impacted canines?

The canine is placed more palatal

The canine crown is apical to MGJ and has got minimal attached gingiva

The canine is near lateral or central incisors

Presence of primary canine

96. What are the criteria for exposure with the application of direct mechanical force of impacted maxillary canines?

Gold chains, steel or elastic ligatures, & magnets attached to orthodontic appliance

Angulation will inhibit spontaneous eruption

Obstructed from erupting by other teeth

Teeth are exposed long after their root development is complete

All of the above

97. How do you take Parallax or Tube Shift Technique of impacted maxillary teeth?

By using Panoramic X-ray

By using CBCT

By using 2 Periapical films with two different angles, 15o to 20o

By using one periapical film like Paralleling Technique

98. What are the problems with traditional endodontic surgery?

Restricted access leading to limitations in visibility

Operating on minuscule microstructures, obscured by bleeding

Root apex was routinely resected with a 45-degree bevel angle → increase in apical leakage

All of the above

99. What type instrument and root ending material are used in modern endodontic surgery?

Root-end preparation material

Use amalgam as a root-end filling

Use ultra-sonic tip and MTA as a root-end filling

Use local antibiotic for irrigation

100. What are the reasons for failure in apicectomy?

OMF_Prof.Keit_Lysan(51-100)

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