MDS PREP
Walshama"s forceps are used to
1) Remove teeth
2) Remove root
3) Clamp blood vessels
4) Reduce nasal bone fractures
Oral Surgery
Answer: 4
Walsham's forceps are a surgical instrument commonly used in maxillofacial surgery. They are designed to reduce and manipulate small, fine bony structures, such as the nasal bones in the case of nasal fractures.
Of the following which tooth is most difficult to anaesthetize by infiltration technique alone
1. Maxillary canine
2. Macillary central incisors
3. Maxillary first molar
4. Maxillary first premolar
Oral Surgery
Answer: 3
Of the following, the maxillary first molar is the most difficult to anaesthetize by infiltration technique alone.
The following areas are anaesthetized by the anterior palatine nerve block
1. Part of the upper lip, lateral surface of nose and lower eyelid
2. Posterior portion of hard palate and overlying tissues upto the first premolar
3. Incisors canine and first premolar
4. Both hard and sort palates completely
Oral Surgery
Answer: 2
The anterior palatine nerve block anaesthetizes the posterior portion of the
hard palate and the overlying tissues up to the first premolar. It does not
typically anaesthetize the upper lip, lateral surface of the nose, or lower
eyelid, which are innervated by different branches of the trigeminal nerve.
Which is most frequently performed to correct a skeletal mandibular retrognathia
1) "C" type osteotomy
2) Horizontal osteotomy of the ramus
3) Oblique subcondylar
4) Sagittal split osteotomy of the ramus
Oral Surgery
Answer: 4
Skeletal mandibular retrognathia, characterized by a backward positioning of the mandible relative to the maxilla, is commonly corrected using a sagittal split osteotomy (SSO) of the ramus. This surgical procedure involves making a cut in the ramus of the mandible, allowing the surgeon to reposition the mandible forward. The SSO is favored because it provides good access, allows for significant advancement of the mandible, and has a relatively low complication rate. Other options, such as "C" type osteotomy or horizontal osteotomy of the ramus, are less commonly performed for this specific condition.
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.
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.
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.
Subjective symptom of buccal nerve block is
1. Numbness and tingling sensation of the buccal mucosa
2. Numbness of the lingual mucosa near molars
3. No subjective symptoms
4. A & B
Oral Surgery
Answer: 3
While the buccal nerve block is used to anesthetize the buccal mucosa and buccal
gingival tissues of the maxillary molars, the actual technique does not
typically produce any specific subjective symptoms in the patient other than the
sensation of the needle. The patient may feel numbness if the anesthetic
solution is inadvertently placed in the oral mucosa or if the block is done
improperly.