MDS PREP
The prothrombin levels that is of concern to dentist extraction is
1) 20 % normal PT
2) 40 % normal PT
3) 50 % normal PT
4) 100 % normal PT
Oral Pathology
Answer: 1
Prothrombin time (PT) is a measure of the blood's clotting ability. In dentistry, a PT level of 20% below normal is often considered a threshold for increased risk of bleeding during surgical procedures such as tooth extraction. At this level, the patient may be at risk for prolonged bleeding or hemorrhage. Dentists typically assess a patient's coagulation status before performing invasive procedures, especially if the patient has a known bleeding disorder or is on medications that affect clotting.
Serum alkaline phosphatase levels are increased in
1. Osteoarthritis
2. Dentinogenesis imperfecta
3. Paget"s disease
4. Rheumatoid arthritis
Oral Pathology
Answer: 3
Serum alkaline phosphatase levels are increased in Paget's disease.
Agranulocytosis may involve early lesions of the oral mucosa and the gingiva that are non-spcific but resemble
1. Erythematous stomatitis
2. Acute herpetic stomatitis
3. Necrotizing ulcerating gingivitis
4. Non specific vesiculobullous stomatitis
Oral Pathology
Answer: 3
Agranulocytosis may resemble necrotizing ulcerative gingivitis.
Carcinoma of lip
1. Occurs mostly in males
2. Metastases easily
3. Occurs mostly in the lower lip
4. Is mostly basal cell type
Oral Pathology
Answer: 1
Carcinoma of the Lip
Occurs mostly in males: Lip carcinoma, particularly
squamous cell carcinoma, is more common in males than females. This is often
attributed to higher rates of tobacco and alcohol use, as well as increased
sun exposure without protection.
Metastases easily: While lip carcinomas can
metastasize, they do not typically do so as easily as other cancers.
Squamous cell carcinoma of the lip can metastasize, but it is often
localized initially.
Occurs mostly in the lower lip: This is true; the lower
lip is the most common site for lip carcinoma due to greater sun exposure
and thinner skin.
Is mostly basal cell type: This statement is
misleading. While basal cell carcinoma is the most common skin cancer
overall, squamous cell carcinoma is more prevalent in the lip region.
Diabetes insipidus, exophthalmous and radiolucent bone defects within the skull are most suggestive of which of the following conditions
1. Sickle cell anaemia
2. Niemann-pick disease
3. Letterer-Siwe disease
4. Hand-Schuller-Christian disease
Oral Pathology
Answer: 4
Diabetes insipidus, exophthalmos, and radiolucent bone defects suggest Hand-Schuller-Christian disease.
Infectious mononucleosis has
1. Multiple draining sinuses
2. Ulcers which bruise easily
3. Palatal perforation
4. Alveolar bone loss
Oral Pathology
Answer: 2
Infectious mononucleosis is characterized by ulcers that bruise easily.
Commonly used collimating device
1. Aluminium filter
2. Lead diaphragm
3. Molybdenum cup
4. Tungsten filament
Oral Pathology
Answer: 2
Lead diaphragms are commonly used collimating devices.
Penetration power of X-ray is measure of
1. Exposure time
2. Milliamperage
3. Kilovoltage
4. None of the above
Oral Pathology
Answer: 3
Penetration power of X-ray is primarily measured by kilovoltage.