MDS PREP
Patients with end-stage renal disease are of increased risk when undergoing extraction of teeth because they
1. Have an increased tendency to bleed
2. Are susceptible to infections
3. Are often on steroid therapy
4. All of the above
Oral Surgery
Answer: 4
Patients with end-stage renal disease are at increased risk during tooth
extraction due to several factors. They often have an increased tendency to
bleed due to platelet dysfunction and are susceptible to infections due to
compromised immunity. Additionally, they are often on steroid therapy, which can
affect wound healing and increase the risk of infection.
The Caldwell-Luc operation is performed on the
1. maxillary sinus
2. temporal space
3. frontal sinus
4. pharynx
Oral Surgery
Answer: 1
Caldwell-Luc Operation
The Caldwell-Luc operation is a surgical procedure
performed to access the maxillary sinus. It is often used to treat chronic
sinusitis or to remove cyst s or tumors from the maxillary sinus. The
procedure involves creating an opening in the canine fossa to allow drainage
and access to the sinus cavity. The other options listed do not pertain to
this specific surgical intervention.
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.
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.
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.
Among the following which is advantage of sagittal split osteotomy over transoral vertical subcondylar osteotomy
1) Greater mandibular movement is achieved
2) Because it is intraoral procedure. No external scar is produced
3) Alone may be used to correct a mandibular retrognathism and prognathism
4) Less chance of injuring the inferior dental canal
Oral Surgery
Answer: 3
Among the given choices, the advantage of a sagittal split osteotomy over a transoral vertical subcondylar osteotomy is that it allows for greater mandibular movement. The sagittal split osteotomy is a surgical technique used in orthognathic surgery to reposition the mandible in cases of severe skeletal discrepancies. It involves splitting the mandible along the midline and moving the two halves apart, which can provide significant advancement or setback of the lower jaw. This technique may be used to correct both mandibular prognathism and retrognathism, making it a versatile option in orthognathic surgery. Additionally, it is associated with fewer complications compared to the transoral vertical subcondylar osteotomy, which involves cutting through the medullary bone of the condyle and can pose a higher risk of injury to the facial nerve and other vital structures. However, it's important to note that the choice of surgical approach is determined by the specific case and the individual patient's needs.
Gillies approach for reduction of zygomatic fractures is done through
1. Temporal fossa
2. Infra temporal fossa
3. Infra orbital fossa
4. All of the above
Oral Surgery
Answer: 1
The temporal fossa is located on the side of the skull, above the zygomatic arch and lateral to the orbit. The Gillies approach involves an incision in the temporal region to access the zygomatic bone, which is then manipulated to reduce the fracture and restore its normal anatomical position. This approach is commonly used in oral and maxillofacial surgery for the management of complex zygomatic fractures.
Which of the following local anaesthetics has intrinsic vasoconstrictive action? Or which of the following addicts are called as walking bombs
1. Cocaine
2. Procaine
3. Xylocaine
4. Bupivacaine
Oral Surgery
Answer: 1
Cocaine has intrinsic vasoconstrictive action.