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OMFS > Exodontia > Flashcards

Exodontia Flashcards

Learn all about the procedure instruments and indications

1
Q

Inhaled tooth goes into right bronchus? (true or false)

A

False it’s usually coughed out.

the root however may enter, and is should be removed immediately by bronchoscope.

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2
Q

A pregnant patient in second trimester falls into syncope, she should be kept in which position?

A

Left Lateral.

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3
Q

Bulls eye type of appearance is seen in IOPA in?

A

DistoAngular impaction

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4
Q

Reactionary Hemorrhage occurs due to

A

high blood pressure

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5
Q

A male taking Hydrocortisone 60mg daily , the day before extraction the dose should be?

A

Unchanged!

Patients undergoing corticosteroid therapy will have concomitant decreased adrenal reserve and will decompensate when exposed to additional stress. To prevent adrenal crisis dose remains unchanged.

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6
Q

Secondary Hemorrhage results from?

A

Breakdown of clot on account of infection. (7-10 days)

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7
Q

Mechanical advantage by straight elevators is-

A

3.

apex elevator - 2.5
cross bars- 4.6

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8
Q

a patient on dicoumoral therapy requires a tooth extraction. the surgical risk involved is -

A

increased PROTHROMBIN time.

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9
Q

In a patient of Liver disease the possible complication during extraction is -

A

Bleeding

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10
Q

Trismus post 4 weeks of extraction is possibly due to -

A

breakage of needle in pterygomandibular space

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11
Q

Elective dental procedures in a patient with myocardial infarct two months prior is best-

A

postponed until 6 months have elapsed.

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12
Q

absolute contraindications for extraction of teeth

A

central hemangioma

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13
Q

one day after complete mouth extraction, blue black spots seen on neck of the patient indicate-

A

postoperative ecchymosis

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14
Q

In a vertically impacted third mandibular molar the distal root is most likely to slip in-

A

submandibular space

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15
Q

Extraction in case of infection is-

A

Done to aid drainage and relieve pain if proper antibiotic is given and adequate blood levels is reached

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16
Q

When forceps is to be utilised for removal of a tooth the first direction for the force to be applied is -

A

Apically

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17
Q

An elevator can be used to advantage when

A

Multiple adjacent Teeth have to be removed

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18
Q

Number 16 & 23 cowhorn forceps are specially designed to extract-

A

Mandibular Molars

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19
Q

RubberBand Extraction is done in patients with -

A

Bleeding Disorders like hemophilia and hemangioma

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20
Q

No. 88 cowhorn forceps are used for -

A

Maxillary third molars

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21
Q

Syncope is transient loss of consciousness due to

A

cerebral anoxia (Spirit of ammonia acts as a respiratory stimulant)

22
Q

Red Winter’s Line indicates

A

Depth of the Tooth in the bone

23
Q

The most common cause of Disimpaction of mandibular third molar is

A

Recurrent Pericoronitis

24
Q

The most common and least difficult of all impactions

A

Mesioangular impaction

25
Q

Airotor complication during bone cutting

A

Emphysema

26
Q

High risk conditions indicated for prophylactic antibiotics before extraction

A

Congenital Heart Diseases
Prosthetic Cardiac Valve
Bacterial Endocarditis

27
Q

A in WHARFEs assesment stands for

A

Angulation

28
Q

Hourglass Appearance is seen in

A

Partial encirclement of the interior alveolar canal (mandibular third molar)

29
Q

Difficulty scale for impaction based on Angulation

A

DistoAngular>Vertical>Horizontal>Mesioangular

D>V>H>M

30
Q

Anti platelet action of Aspirin dose is

A

0.5-1 mg/kg/day. ~ 30-90 mg/day

31
Q

Sicca Dolorosa is also known as

A

Dry socket aka Alveolar Osteitis aka localised Alveolar Osteomyelitis

32
Q

Risk Factor for women leading to dry socket

A

Oral contraceptives

33
Q

No. 14 L and 14 R elevators are used for

A

Mandibular Molars

34
Q

Who developed the criteria for TRUE relationship of root apices of impacted mandibular third molar to inferior alveolar canal

A

Howe and Poyton (1960)

35
Q

An elderly man with Ischemic Heart Disease goes into Syncope, peripheral pulse is absent, BP is not recordable and ECG shows wide complex tachycardia. Immediate management consists of?

A

DC cardioversion (defibrillator)

36
Q

Lingual flap in mandibular third molar is retracted by

A

Broad spatula by Greenwood et all is preferred as it is much less likely to be associated with sensory loss.

Howarth Retractor can also be used because of close proximity of lingual nerve in relation to impacted third molar.

37
Q

Austin retractor is used for

A

Reflecting Mucoperiosteal flap of buccal side - so bone can be visualised and mesio buccal bone guttering can be done around impacted third molar.

38
Q

Lingual Split Technique uses

A

Chisel.

39
Q

During attempted extraction of upper molar, to determine the position of the roots displaced into antrum, ideal radiograph would be -

A

Maxillary Oblique Occlusal Radiograph

Water’s view - 3D localisation

40
Q

Cardiac Dysarrythmia during extraction is caused by stimulation of

A

Trigeminal Nerve

41
Q

Loss of tooth is accompanied by

A

loss of bone height AND width

42
Q

Resorption pattern of Mandible is

A

Downward and outward.
bone width is decreased then height.

Maxilla is exactly opposite. (upward and onward)

43
Q

To close proximity antral fistula which flap should not be used?

A

Mucous flap

44
Q

Working end of Crier elevator is placed at

A

over the interradicular bone

45
Q

Ideal time for removal of impacted Third molar is

A

when the roots of teeth are one third formed and before when they are two thirds formed

46
Q

shoehorn forceps is another name for

A

Small straight elevators

47
Q

Mandibular vertically impacted tooth, root may be pushed into…… space

A

Submandibular space

48
Q

Mandibular mesioangular impacted tooth is pushed into ….. space

A

pterygomandibular Space

49
Q

Maxillary Third molar is usually pushed into

A

Infratemporal Space

50
Q

Most common areas of Post op ecchymosis are

A

circumorbital
submandibular lower lip
floor of mouth

OMFS (5 decks)

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