MDS PREP
For a 8-year-old child with TMJ ankylosis, the treatment of choice is
1. Gap arthroplasty
2. Condylectomy
3. Gap arthroplasty with costochondral grafting
4. Treatment not required
Oral Surgery
Answer: 3
For an 8-year-old child with TMJ ankylosis, the treatment of choice is gap arthroplasty with costochondral grafting.
In children jaw fractures are normally immobilized for
1. 3 months
2. 6-8 weeks
3. 3-4 weeks
4. 5-10 days
Oral Surgery
Answer: 3
In children, the healing process for fractures is faster due to the high vascularity and rapid bone turnover in growing tissues. Mandibular fractures in children are typically immobilized for a shorter duration compared to adults, as prolonged immobilization can interfere with the growth of the jaw. Immobilization for 3-4 weeks is generally sufficient to allow proper healing without compromising growth.
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.
Among the following, which condition is a containdictation to the use of local anaesthetic agent?
1. Parkinson"s disease
2. Liver damage
3. Pregnancy
4. Hypersensitivity to the drug
Oral Surgery
Answer: 4
Hypersensitivity to the drug is a contraindication to the use of local anaesthetic agent.
Number 16 cowhorn forceps are specially designed to extract
1. Maxillary first and second premolars
2. Mandibular central incisors
3. Mandibular molars
4. Maxillary molars
Oral Surgery
Answer: 3
Number 16 cowhorn forceps are specially designed to extract mandibular molars.
Lidocaine is an example of an
1. Acid
2. Amide
3. Ester
4. Aldehyde
Oral Surgery
Answer: 2
Lidocaine is an example of an amide.
A contraindication to local infiltration technique
1. Hypertension
2. Diabetic patient in whom urine sugar present
3. Infection in the arch
4. Kidney problems
Oral Surgery
Answer: 3
Local infiltration is a safe and effective technique for achieving anesthesia in
most situations. However, it is contraindicated in the presence of infection in
the arch because it can spread the infection further or lead to complications
like an abscess. Hypertension and kidney problems are not direct
contraindications to local anesthesia, but they may require careful monitoring
of the patient's condition. Diabetes with urine sugar present does not directly
contraindicate the use of local anesthetics unless there are severe
complications or neuropathy involved.
One wants to anaesthetise the inferior alveolar nerve at the point at which it exits from the mandibular canal, so the injection site most often located in
1) Between first and second molars inferior to the root apices
2) Between first and second molar superior to root apices
3) Between first and second premolars inferior to root apices
4) Between first and second premolars superior to root apices
Oral Surgery
Answer: 3
The inferior alveolar nerve block (IANB) is a common technique used in dentistry to anesthetize the mandibular teeth, including the molars. The nerve exits the mandibular foramen and runs along the mandibular canal before it branches into the incisive and mental nerves. For effective anesthesia, the injection site is typically located between the first and second premolars, aiming towards the medial surface of the ramus of the mandible, and the needle is inserted until it is just inferior to the root apices of these teeth. This position allows the anesthetic solution to reach the nerve as it emerges from the bone and before it gives off its major branches, thus achieving profound anesthesia for the procedure.