MDS PREP
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.
In depressed zygomatic arch fracture, difficulty in opening the mouth is caused by impingement of
1. Condyles
2. Ramus
3. Petrous temporal
4. Coronoid process
Oral Surgery
Answer: 4
The coronoid process can become impinged due to
displacement of the zygomatic arch, restricting the movement of the mandible and
causing trismus (difficulty in mouth opening).
The following is least toxic of all local anaesthetics
1. Tetracaine
2. Mepivacaine
3. Prilocaine
4. 2-Chloroprocaine
Oral Surgery
Answer: 4
The following is least toxic of all local anaesthetics: 2-Chloroprocaine.
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.
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.
Early movements of TMJ following surgery for TMJ ankylosis is
1. Desirable
2. Harmful
3. Contraindicated
4. B & C
Oral Surgery
Answer: 1
Early movements of TMJ following surgery for TMJ ankylosis is desirable.
In Le Fort I fracture, the fracture fragment includes all of the following except the
1. Bridge of the nose
2. Nasal spine
3. Lower portions of the pterygoid processes
4. Upper teeth and palate
Oral Surgery
Answer: 1
Le Fort I Fracture
Le Fort I fracture involves the maxilla and typically
includes the upper teeth and palate, lower portions of the pterygoid
processes, and the nasal spine. However, it does not involve the bridge of
the nose, which is part of the facial skeleton above the maxilla.
Double contrast phase contrast arthroscopy is used to study
1. Clicking of TMJ
2. Deviation of TMJ
3. Joint space
4. Disc
Oral Surgery
Answer: 3
Double contrast phase contrast arthroscopy is used to study the joint space.