NBDE Oral Surgery

Question 1

What is the most common local complication following mandibular third molar extraction?

Accepted Answer

Dry socket (alveolar osteitis)

Answer

Inferior alveolar nerve paresthesia

Answer

Mandibular fracture

Answer

Oroantral communication

Question 2

The inferior alveolar nerve block anesthetizes the mandibular teeth but does NOT anesthetize which tissue in the molar region?

Accepted Answer

Buccal gingiva of mandibular molars

Answer

Pulp of mandibular molars

Answer

Labial mucosa at the mental foramen

Answer

Mandibular canal contents

Question 3

Dry socket (alveolar osteitis) typically becomes symptomatic within how many days after extraction?

Accepted Answer

3–5 days

Answer

1–2 days

Answer

7–10 days

Answer

14–21 days

Question 4

Which of the following is the most significant risk factor for developing dry socket after tooth extraction?

Accepted Answer

Smoking tobacco

Answer

Age over 60 years

Answer

Taking low-dose aspirin

Answer

History of hypertension

Question 5

The primary treatment for dry socket (alveolar osteitis) consists of:

Accepted Answer

Gentle socket irrigation and placement of a medicated dressing

Answer

Antibiotics and systemic analgesics alone

Answer

Re-extraction and primary soft tissue closure

Answer

Surgical debridement under general anesthesia

Question 6

Which instrument is primarily used to section an impacted mandibular third molar during surgical extraction?

Accepted Answer

Surgical handpiece with round or fissure bur

Answer

Straight forceps (No. 151)

Answer

Cowhorn forceps (No. 16)

Answer

Periosteal elevator alone

Question 7

Ludwig's angina is a bilateral rapidly spreading cellulitis that primarily involves which fascial spaces?

Accepted Answer

Submandibular, sublingual, and submental spaces

Answer

Infratemporal and pterygomandibular spaces

Answer

Buccal and masseteric spaces

Answer

Parapharyngeal and retropharyngeal spaces