MDS PREP
The scalpel blade most commonly used for oral surfical procedures is
1. No. 22
2. No. 12
3. No. 11
4. No. 15
Oral Surgery
Answer: 4
The scalpel blade most commonly used for oral surgical procedures is No. 15.
Myelinated nerve fibres have all of the following properties except
1. Conduction is slower in myelinated than in non-myelinated fibres
2. Current discharges at nodes of Ranvier
3. Outer layer is of lipids
4. None of the above
Oral Surgery
Answer: 1
Myelinated nerve fibres have all of the following properties except conduction is slower in myelinated than in non-myelinated fibres.
Bell’s palsy is associated with
1. inflammation of the maxillary sinus
2. muscles of mastication
3. arthritis of the temporomandibular joint
4. facial nerve
Oral Surgery
Answer: 4
Bell's palsy is a form of temporary facial paralysis or weakness on one side of the face resulting from damage or trapping of the facial nerve (cranial nerve VII), which is the nerve that controls the muscles of facial expression.
In dislocation of the jaw, displacement of the articular disc beyond the TM joint results from spasm of excessive contraction of the following muscle
1. Buccinator
2. Lateral pterygoid
3. Masseter
4. Temporalis
Latreal Pterygoid is inserted on Mandible
Scrub technique refers to a method of scrubbing the
1. Surgical instruments after a contaminated case
2. Patient body surface before placing surgical incison, to decrease bacterial flora
3. Operating room
4. Operator"s hands and forearms before donning gown and gloves
Oral Surgery
Answer: 4
Scrub technique refers to the method of scrubbing the operator's hands and
forearms before donning gown and gloves. This is essential for maintaining a
sterile environment and reducing the risk of surgical site infections.
Mental foramen opening is directed in
1. Forward and medial direction
2. Backward and medial direction
3. Forward and lateral direction
4. Backward and lateral direction
Oral Surgery
Answer: 4
The mental foramen is found on the buccal aspect of the mandible, typically
between the first and second premolars or the second premolar and the first
molar. The opening of the mental foramen is directed backward and lateral,
allowing the mental nerve to exit and innervate the lower lip and chin.
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.
A fracture resulting from the destruction of bone by local or systemic disease is termed
1. greenstick fracture
2. impacted fracture
3. complicated fracture
4. pathological fracture
Oral Surgery
Answer: 4
A pathological fracture occurs when a bone breaks in an area weakened by disease, such as cancer, osteoporosis, or infection. Unlike traumatic fractures, which result from an external force, pathological fractures occur due to underlying conditions that compromise the structural integrity of the bone.