MDS PREP
A surgical procedure required bilateral block. A bilateral inferior alveolar nerve block is
1. Not contraindicated
2. Should rarely be preformed
3. May cause space infection
4. None of the above
Oral Surgery
Answer: 1
A bilateral inferior alveolar nerve block is not inherently contraindicated. It
is commonly performed in cases requiring surgery on both sides of the mandible.
However, it should be done with caution in patients with certain medical
conditions or anatomical variations that could increase the risk of
complications. It is important to assess each patient individually before
administering the block.
Among the following which is advantage of sagittal split osteotomy over transoral vertical subcondylar osteotomy
1) Greater mandibular movement is achieved
2) Because it is intraoral procedure. No external scar is produced
3) Alone may be used to correct a mandibular retrognathism and prognathism
4) Less chance of injuring the inferior dental canal
Oral Surgery
Answer: 3
Among the given choices, the advantage of a sagittal split osteotomy over a transoral vertical subcondylar osteotomy is that it allows for greater mandibular movement. The sagittal split osteotomy is a surgical technique used in orthognathic surgery to reposition the mandible in cases of severe skeletal discrepancies. It involves splitting the mandible along the midline and moving the two halves apart, which can provide significant advancement or setback of the lower jaw. This technique may be used to correct both mandibular prognathism and retrognathism, making it a versatile option in orthognathic surgery. Additionally, it is associated with fewer complications compared to the transoral vertical subcondylar osteotomy, which involves cutting through the medullary bone of the condyle and can pose a higher risk of injury to the facial nerve and other vital structures. However, it's important to note that the choice of surgical approach is determined by the specific case and the individual patient's needs.
Biopsy specimens removed for examinations are immediately placed in
1) 10 % ethanol
2) 10 % formalin
3) Hydrogen peroxide
4) 1 % formalin
Oral Surgery
Answer: 2
Formalin, specifically 10% neutral buffered formalin, is the standard fixative used for preserving biopsy specimens. It helps to maintain the tissue architecture and cellular details, making it suitable for histopathological examination. Ethanol is not typically used for routine tissue fixation as it can cause tissue shrinkage and distortion. Hydrogen peroxide is not a fixative and is used for different purposes, such as disinfection. A 1% formalin solution is too dilute for effective fixation.
Which surgical procedure is carried out to treat TMJ ankylosis?
1. Arthroplasty
2. Condylectomy
3. Discoplasty
4. Capsulorrhaphy
Oral Surgery
Answer: 1
The surgical procedure carried out to treat TMJ ankylosis is arthroplasty.
Inferior alveolar nerve block is given in
1. Retromolar area
2. Pterygomandibular space
3. Submandibular space
4. Submental space
Oral Surgery
Answer: 2
Inferior alveolar nerve block is given in the pterygomandibular space.
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.
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.
A patient who is a grand mal epileptic requires emergency extraction. One should
1. Advise the patient that procedure requires admission to the hospital
2. Proceed with extraction using xylocaine without adrenaline
3. Proceed with extraction if anticonvulsive medication is employed by patient
4. None of the above
Oral Surgery
Answer: 3
In a grand mal epileptic patient requiring emergency extraction, it is essential
to proceed with caution and ensure that the patient is on a stable
anticonvulsive medication regimen. The patient should be monitored closely and
have immediate access to medical support in case of a seizure during the
procedure.