"Hanging drop" sign in the maxillary sinus radiograph usually indicates 1) Nasal bone fracture 2) Orbital floor blow out fracture 3) Condylar fracture 4) None of the above
Oral SurgeryAnswer: 2
Which of the following procedures can be used to treat an oroantral fistula resulting from posterior surgery 1. Buccal mucoperiosteal flap 2. Palatal mucoperiosteal flap 3. Bridge flap 4. Palatal island flap
Oral SurgeryAnswer: 2
The needle is most likely to break when giving
1. infiltration anesthesia
2. posterior superior alveolar block
3. mandibular block
4. long buccal nerve block
Oral SurgeryAnswer: 3
Patients with end-stage renal disease are of increased risk when undergoing extraction of teeth because they 1) Have an increased tendency to bleed 2) Are susceptible to infections 3) Are often on steroid therapy 4) All of the above
Oral SurgeryAnswer: 4
In endodontic surgery, which of the following about chromic gut suture is not true 1) Its properties are inferior to plain gut suture 2) It is coated with chromium tri-oxide 3) It is less biocompatible than plain gut suture 4) Its absorption is faster than the plain gut sutures
Oral SurgeryAnswer: 4
Which of the following statement about a blow-out fracture is true? 1) If the patient has diplopia and a coronal tomogram shows a small blow-out of the orbital floor, it should be repaired immediately 2) Early repair of the orbital floor always prevents enophthalmos 3) Both of the above 4) None of the above
Oral SurgeryAnswer: 4
Paraesthesia during a mandibular nerve block is due to 1) Sodium conductance through the nerve 2) Acid pH of the anaesthetic solution 3) Contact of the needle with the nerve trunk 4) Poor technique
Oral SurgeryAnswer: 3
In peripheral nerve block, which of the following local anaesthetics has the longest duration of action? 1) Bupivacaine 2) Cocaine 3) Lignocaine 4) Prilocaine
