MDS PREP
Which of the following diseases are characterized by absence of lamina dura, hypocalcified dentine, elongated pulp horns, periapical infection with multiple periapical fistulas
1. Paget"s disease
2. Primary hyperthyroidism
3. Vit D resistant rickets
4. Hypophosphatasia
Oral Pathology
Answer: 3
Vitamin D resistant rickets is characterized by absence of lamina dura and hypocalcified dentine.
Bell"s palsy is triggered by
1. Exposure to cold
2. Tooth extraction
3. Local and systemic infection
4. Any of the above
Oral Pathology
Answer: 4
Bell's palsy can be triggered by exposure to cold, tooth extraction, or infections.
Reduced salivary flow following irradiation is dose dependent. At what dose does the flow reach essentially zero?
1. 4000 rads
2. 5000 rads
3. 6000 rads
4. 7000 rads
Oral Pathology
Answer: 3
Reduced salivary flow reaches essentially zero at a dose of 6000 rads.
Reversible pulpitis change to irreversible pulpits primarily because of
1) Vascular strangulation
2) Reduced host resistance
3) Invasion of microorganisms
4) An increase in microbial virulence
Oral Pathology
Answer: 3
Reversible pulpitis changes to irreversible pulpitis primarily because of
invasion of microorganisms.
Reversible pulpitis is a condition where the pulp is inflamed but can
potentially heal if the causative agent is removed and the pulp remains vital.
Irreversible pulpitis, however, occurs when the inflammation is severe or
chronic, leading to irreversible damage to the pulp. The primary reason for this
progression is typically the invasion of microorganisms and their byproducts,
which can cause further inflammation and necrosis of pulpal tissue, making
healing unlikely.
A patient comes with emotional problems, increased salivation, pallor of oral mucosa and a grayish blue discolouration of the gingival. These findings are most consistent with a clinical impression of
1. Cherubism
2. Cretinism
3. Pierre-Robin syndrome
4. Lead poisoning
Oral Pathology
Answer: 4
The findings of emotional problems, increased salivation, pallor, and grayish-blue discoloration of the gingiva are consistent with lead poisoning.
Anitschow"s cells are found in histological sections of
1) Pemphigus
2) Aphthous ulcer
3) Leukoplakia
4) Lichen planus
Oral Pathology
Answer: 2
Anitschow's cells, also known as "caterpillar cells," are a type of histiocyte that can be found in the context of certain inflammatory conditions, including aphthous ulcers. These cells are indicative of a specific immune response and are often associated with the healing process of these painful oral lesions.
Radiation-induced thyroid cancer is the result of which type of radiation
1. Somatic
2. Genetic
3. Teratogenic
4. All of the above
Oral Pathology
Answer: 1
Radiation-induced thyroid cancer is the result of somatic radiation.
Radiodensity can be increased by
1. Decreasing mA
2. Decreasing kVp
3. Decreasing target-film distance
4. Increasing target-film distance
Oral Pathology
Answer: 3
Radiodensity can be increased by increasing target-film distance.