When using nitrous oxide as a general anesthetic agent, what is the lowest acceptable concentration of oxygen?
1. 90%
2. 5%
3. 80%
4. 20%
Oral SurgeryAnswer: 4
The following two laboratory tests should be considered before deciding whether to use general anaesthesia or not 1. Total WBC count and prothrombin time 2. Total WBC count and urine analysis 3. Bleeding time and clotting time 4. Complete blood count and urine analysis
Oral SurgeryAnswer: 4
All of the following may suggest that a tooth will be difficult to extract, except
1. dilacerated roots
2. nonvital teeth
3. hypercementosis of roots
4. sharp cusps
Oral SurgeryAnswer: 4
Of the following in which condition general anaesthesia is contraindicated? 1) Haemoglobinopathy 2) Allergy 3) Diabetes mellitus 4) All of the above
Oral SurgeryAnswer: 1
For a patient undergoing anticoagulant therapy, who requires unavoidable dental surgical treatment, the dental surgeon should 1. Not take up the patient till the therapy is over 2. Bring down the dosage and proceed further 3. Adjust the dosage before and after dental visit 4. Cosult the physician of the patient for joint decision
Oral SurgeryAnswer: 4
Treatment for fibrous dysplasia in a young 25-yrs-old patient involving maxilla is best treated by 1. Enbloc resection 2. Cosmetic contouring 3. Maxillary resection 4. Radiation therapy
Oral SurgeryAnswer: 2
To perform tracheostomy entry should be made at the 1. Cricothyroid ligament 2. Thyroid membrane 3. Thyroid notch 4. Cricoid cartilage
Oral SurgeryAnswer: 1
Cavernous sinus thrombosis following infection of maxillary anterior teeth most often results from spread of infected emboli along the 1) Pterygoid plexus 2) Ophthalmic vein 3) Facial artery 4) Angular artery
