MDS PREP
A fracture resulting from the destruction of bone by local or systemic disease is termed
1. greenstick fracture
2. impacted fracture
3. complicated fracture
4. pathological fracture
Oral Surgery
Answer: 4
A pathological fracture occurs when a bone breaks in an area weakened by disease, such as cancer, osteoporosis, or infection. Unlike traumatic fractures, which result from an external force, pathological fractures occur due to underlying conditions that compromise the structural integrity of the bone.
Xylocaine strength used in dentistry is
1. 2 %
2. 5 %
3. 8 %
4. 10 %
Oral Surgery
Answer: 1
Xylocaine strength used in dentistry is 2%.
Compbell line is seen in
1) Transpharyngeal view
2) Transorbital view
3) Occipitomental view
4) Towne view
Oral Surgery
Answer: 3
The Campbell line is an important anatomical reference line
used in radiology, particularly in the context of the occipitomental
view (also known as the Water's view). This line is drawn from the
outer canthus of the eye to the midpoint of the maxillary sinus and is used to
assess the position of the maxillary sinuses and other related structures in the
skull.
Occipitomental view: This view is commonly used in
maxillofacial imaging to visualize the maxillary sinuses, orbits, and nasal
cavity. The Campbell line helps in evaluating the relationship of these
structures.
Transpharyngeal view: This view is used to visualize the
pharynx
Transorbital view: This view focuses on the orbits and
surrounding structures
Towne view: This view is used to visualize the occipital
bone and the base of the skull
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.
The elevator can be used to advantage when
1. The tooth to be extracted is isolated
2. The interdental bone is used as a fulcrum
3. The adjacent tooth is not to be extracted
4. Multiple adjacent teeth are to be extracted
Oral Surgery
Answer: 4
The elevator can be used to advantage in scenarios where multiple adjacent teeth
are to be extracted, as it provides a more precise and controlled method of
elevating the teeth, especially when they are closely spaced or have converging
roots.
Open reduction and internal fixation of fracture fragments in the older patients is risky because
1) Of their old age, they less likely tolerate the major procedure under general anaesthesia
2) Fixation is difficult because bone will become more dense as age advances
3) Both of the above are correct
4) None of the above are correct
Oral Surgery
Answer: 4
The risk associated with open reduction and internal fixation (ORIF) in older patients is not solely due to their age or increased bone density. It's important to consider their overall health, including potential comorbidities and reduced healing capacity. The risks might be higher due to factors like poor bone quality, increased surgical time, and the potential for complications such as infection and nonunion.
The prime purpose of bibevel chisel is
1. Split teeth
2. Sharpen the angles
3. Remove bone
4. Engage point establishment
Oral Surgery
Answer: 1
The prime purpose of bibevel chisel is to split teeth.
To drain pus from an abscess, the surgeon should
1) Cut an eclipse from the abscess surface to allow for a drain
2) Aspirate the contents
3) Penetrate into abscess cavity & probe with an artery forceps to allow for flow of pus
4) Cut only the mucosa and skin
Oral Surgery
Answer: 3
Proper abscess drainage involves creating an incision to allow pus to drain completely. Probing with an artery forceps ensures complete evacuation of the cavity. Other methods, like simple aspiration or superficial incisions, may not adequately drain the abscess.