MDS PREP
Patient reports with discoloured teeth bearing brown stains. The teeth glow fluorescent in UV light. The most likely diagnosis is
1. Porphyria
2. Amelogenesis imperfecta
3. Hutchinson"s teeth
4. Tetracycline staining of teeth
Oral Pathology
Answer: 4
The most likely diagnosis for discolored teeth that glow fluorescent in UV light is tetracycline staining of teeth.
Aplastic anaemia is common with
1. Chloramphenicol
2. Cephalosporin
3. Tetracycline
4. Pencillin
Oral Pathology
Answer: 1
Aplastic anemia is commonly associated with chloramphenicol.
Precancerous potential in Plummer-Vinson syndrome may be due to change in the epithelium like
1. Atrophy
2. Hypertrophy
3. Acanthosia
4. All the above
Oral Pathology
Answer: 1
Plummer-Vinson syndrome is associated with atrophic changes in the
epithelium, which can lead to an increased risk of cancer
Plummer-Vinson syndrome is characterized by a classic triad of
clinical features: dysphagia (difficulty swallowing), iron-deficiency anemia,
and esophageal webs. Additional symptoms may include glossitis (inflammation of
the tongue), koilonychia (spoon-shaped nails), and cheilitis (inflammation of
the lips).
Clinical Features of Plummer-Vinson Syndrome:
Dysphagia:
Difficulty swallowing due to the presence of esophageal webs, which
can obstruct the esophagus.
Iron-Deficiency Anemia:
Resulting from chronic blood loss or malabsorption, leading to
fatigue and weakness.
Esophageal Webs:
Thin membranes that form in the esophagus, contributing to
swallowing difficulties.
Glossitis:
Inflammation of the tongue, which may appear smooth and swollen.
Koilonychia:
Spoon-shaped nails that can indicate iron deficiency.
Cheilitis:
Inflammation and cracking of the lips, often associated with
nutritional deficiencies.
Fatigue and Weakness:
Common symptoms due to anemia and nutritional deficiencies.
Associated Risks:
Esophageal Cancer:
There is an increased risk of developing esophageal cancer in
individuals with Plummer-Vinson syndrome.
Prevention:
Iron Intake:
Ensuring adequate dietary iron may help prevent the onset of this
syndrome. Diagnosis and Management:
Diagnosis:
Diagnosis is typically made through clinical evaluation, endoscopy,
and imaging studies to identify esophageal webs and assess for anemia.
Management:
Treatment often involves iron supplementation to address anemia and
dietary modifications to improve iron intake. In some cases, dilation of
esophageal webs may be necessary to alleviate dysphagia
A patient exhibits radiolucent areas in the jaw bones which stimulate both periapical and periodontal lesions. The serum calcium is 13.5 mg% and serum phosphorus is 2.3 mg%. A biopsy from one of the radiolucent areas reveals a giant cell lesion. The most likely diagnosis is
1. Hyperparathyroidism
2. Hypoparathyroidism
3. Hultiple myeloma
4. Muxoedema
Oral Pathology
Answer: 1
The most likely diagnosis for the patient is hyperparathyroidism, given the symptoms and lab findings.
In radiobiology, the "latent period" represents the period of time between
1. Cell rest and cell mitosis
2. The first and last dose in radiation therapy
3. Film exposure and image development
4. Radiation exposure and its biological effects
In radiobiology, the "latent period" represents the time between radiation exposure and its biological effects.
Radiation caries is caused by irradiation of
1. Salivary glands
2. Enamel
3. Enamel and dentin
4. Oral mucosa
Oral Pathology
Answer: 1
Radiation caries is caused by irradiation of salivary glands.
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.
The main purpose of intensifying screens in extraoral radiographic films is
1. To increase the contrast of film
2. To increase the exposure time
3. To decrease the speed of film
4. Decrease secondary radiation to patient
Oral Pathology
Answer: 4
The main purpose of intensifying screens is to decrease secondary radiation to the patient.