MDS PREP
Which of the following is not used as a topical LA?
1. Procaine
2. Tetracaine
3. Lidocaine
4. Benzocaine
Oral Surgery
Answer: 1
Procaine is not used as a topical local anaesthetic.
Among the following items in the past medical history, which would most affect the choice of local anaesthetic agent?
1. RHD
2. Hyperthyroidism
3. Adrenal insufficiency
4. Asthma
Oral Surgery
Answer: 2
Adrenal insufficiency would most affect the choice of local anaesthetic agent.
In peripheral nerve block, which of the following local anaesthetics has the longest duration of action?
1. Bupivacaine
2. Cocaine
3. Lignocaine
4. Prilocaine
In peripheral nerve block, the local anaesthetic with the longest duration of action is Bupivacaine.
Compbell line is seen in
1. Transpharyngeal view
2. Transorbital view
3. Occipitomental view
4. Towne view
Oral Surgery Answer: 3
The Campbell line is an important anatomical reference line
used in radiology, particularly in the context of the occipitomental
view (also known as the Water's view). This line is drawn from the
outer canthus of the eye to the midpoint of the maxillary sinus and is used to
assess the position of the maxillary sinuses and other related structures in the
skull.
Occipitomental view: This view is commonly used in
maxillofacial imaging to visualize the maxillary sinuses, orbits, and nasal
cavity. The Campbell line helps in evaluating the relationship of these
structures.
Transpharyngeal view: This view is used to visualize the
pharynx
Transorbital view: This view focuses on the orbits and
surrounding structures
Towne view: This view is used to visualize the occipital
bone and the base of the skull
The following anatomical landmarks are useful in the closed mouth approach of mandubular nerve block except
1. Occlusal plane of occluding teeth
2. Anterior border of ramus
3. Mucogingival junction of the mandibular teeth
4. A & B
Oral Surgery
Answer: 3
The closed mouth approach of mandibular nerve block relies on the anatomical
landmarks of the occlusal plane of occluding teeth and the anterior border of
the ramus. The mucogingival junction is not a relevant landmark for this
technique.
In gate control theory of pain, pain is mainly modulated by
1. Substantia gelatinosa
2. B fibers
3. C fibers
4. Transmission system
Oral Surgery
Answer: 1
In gate control theory of pain, pain is mainly modulated by the substantia gelatinosa.
The alkayat and Bramley approach to the TMJ is a modification of the
1. Hemicoronal approach
2. Retroauricular approach
3. Preauricular approach
4. Risdon"s incision
Oral Surgery
Answer: 3
The alkayat and Bramley approach to the TMJ is a modification of the preauricular approach.
Which of the following local anaesthetics is a vasoconstrictor
1. Lidocaine
2. Procaine
3. Bupivacaine
4. Ropivacaine
Oral Surgery
Answer: 4
Ropivacaine is a vasoconstrictor.