MDS PREP
To luxate a tooth with a forceps the movements should be
1. Firm and deliberate primarily to the facial surface with secondary movements to the lingual surface
2. Sharp and definite so periodontal ligament tears easily
3. Figure of "eight" motion
4. None of the above
Oral Surgery
Answer: 1
To luxate a tooth with forceps, the movements should be firm and deliberate primarily to the facial surface with secondary movements to the lingual surface.
It is difficult to obtain local infiltration anaesthesia in the presence of inflammation/infection because of
1. A decreased pH
2. Increased vascularity
3. Oedema
4. Pain
Oral Surgery
Answer: 1
It is difficult to obtain local infiltration anaesthesia in the presence of inflammation/infection because of a decreased pH.
Which is the best method to counteract severe acidosis following cardiopulmonary resuscitation?
1) Administration of adrenaline by IV routes
2) Administration of sodium bicorbonate intravenously
3) Administration of adrenaline intramuscularly
4) No treatment is necessary because it is self-limiting
Oral Surgery
Answer: 2
Severe acidosis, particularly metabolic acidosis, can occur following
prolonged cardiac arrest and subsequent CPR. The primary goal in managing such
cases is to restore normal pH levels in the body, which is crucial for proper
cellular function and overall physiological homeostasis.
1. Sodium bicarbonate Sodium bicarbonate is a strong base that reacts with
hydrogen ions (H+), which are responsible for acidity in the blood, to form
carbon dioxide (CO2) and water (H2O). This reaction helps to neutralize the
excess hydrogen ions, thereby raising the pH of the blood. It is administered
intravenously because it allows for rapid distribution throughout the body and
direct access to the circulatory system where it can counteract acidosis most
effectively. The intravenous route ensures that the medication reaches the
bloodstream quickly and in a controlled manner, making it the preferred method
for acute and severe cases.
2. Adrenaline (epinephrine)*: Although adrenaline is a crucial medication used
in CPR for its vasopressor and cardiac stimulant effects, it is not the primary
treatment for severe acidosis. Adrenaline is typically administered to improve
cardiac output and blood pressure during CPR.
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.
The addition of hyaluronidase to a local anaesthetic solution might
1. Increase the duration of anaesthesia
2. Limit the area of anaesthesia
3. Reduce bleeding
4. Enhance diffusion of local anaesthetic
Oral Surgery
Answer: 4
The addition of hyaluronidase to a local anaesthetic solution might enhance diffusion of local anaesthetic.
Under general anaesthesia patient needs oropharyngeal
1. Lap pad
2. 4 * 4 gauge
3. Ferguson mouth gag
4. Pick up forceps
Oral Surgery
Answer: 2
Under general anaesthesia, a patient needs a 4 * 4 gauge.
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.
In a 19-years-old patient with a swelling over the left angle of the mandible, temperature of 38 degree celcius and negative history of trauma, one should suspect
1) Spontaneous fracture of the mandible
2) Pericoronal infection
3) Mumps
4) Sjorgen"s syndrome
Oral Surgery
Answer: 2
Explanation:In this scenario, the presence of swelling and fever in a young adult, particularly in the area of the mandible, suggests a pericoronal infection, which is often associated with the eruption of third molars (wisdom teeth). The lack of trauma further supports this diagnosis, as pericoronal infections are common in the absence of direct injury.