MDS PREP
During the Gillies approach, the structure of anatomic significance is
1. Superficial temporal artery
2. Marginal mandibular nerve
3. Internal jugular vein
4. Inferior alveolar nerve
Oral Surgery
Answer: 1
The Gillies approach is a surgical technique used in facial reconstruction, particularly for the repair of facial defects. The superficial temporal artery is of significant anatomical importance during this procedure, as it supplies blood to the scalp and face. Surgeons must be cautious to avoid damaging this artery during the approach.
Usually hydrolysis of amide type of local anaesthetic salts is facilitated by
1. Tissue pH above 7.0
2. Tissue pH between 5.0 and 7.0
3. Tissue pH below 5.0
4. None of the above
Oral Surgery
Answer: 1
Hydrolysis of amide type of local anaesthetic salts is facilitated by tissue pH above 7.0.
Advantage of chisel and mallet over bur in removing bone is
1. Less skill is needed
2. Psychologically more acceptable
3. No coolant is necessary
4. None of the above
Oral Surgery
Answer: 3
The advantage of chisel and mallet over bur in removing bone is that no coolant is necessary.
Inferior alveolar nerve block is absolutely contraindicated in patients suffering from one of the following diseases
1. Thrombocytopenia
2. Haemophilia
3. Hypoprothrombinaemia
4. Von Willebrand"s disease
Inferior alveolar nerve block is absolutely contraindicated in patients suffering from haemophilia.
A straight elevator is properly used to advantage when the
1. Adjacent tooth is the fulcrum
2. Tooth is isolated tooth
3. Interdental bone is fulcrum
4. Adjacent tooth is not to be extracted
Oral Surgery
Answer: 3
The straight elevator is properly used to advantage when the interdental bone is
used as a fulcrum. This is because the straight elevator can be inserted into
the periodontal ligament space along the long axis of the tooth, and when
levered against the interdental bone, it helps in lifting the tooth from the
socket. Using the adjacent tooth as a fulcrum can potentially damage it.
Which of the following is not a theory for local anaesthetic action
1. Membrane expansion theory
2. Calcium displacement theory
3. Electrical potential theory
4. None of the above
Oral Surgery
Answer: 4
Which of the following is not a theory for local anaesthetic action: None of the above.
Anterior palatine nerve is anaesthetized by anterior palatine nerve block. The subjective symptoms include
1. Feeling of numbness in the posterior palate
2. Feeling of numbness in the anterior part of the palate near the incisors
3. Feeling of numbness of whole palate
4. Little or no subjective symptoms
Oral Surgery
Answer: 1
Feeling of numbness in the posterior palate. An anterior palatine nerve block
typically anesthetizes the palatal mucosa and soft tissues anterior to the
second premolars, including the palatal mucosa of the incisor and canine areas.
The numbness felt in the posterior palate is usually due to diffusion of the
anesthetic solution to the adjacent greater palatine nerve, which innervates the
palatal mucosa in the molar area.
Longest acting local anaesthetic is
1. Bupivacaine
2. Tetracaine
3. Lidocaine
4. Both A and B
Oral Surgery
Answer: 4
Longest acting local anaesthetic is Bupivacaine.