MDS PREP
The facial aspect of an intraoral film is determined by the  
 1. Anatomic landmarks
 2. Concavity of the embossed dot
 3. Convexity of the embossed dot
 4. Curvature of the arch
                            Oral Pathology
                            Answer: 3
                            The facial aspect of an intraoral film is determined by the convexity of the embossed dot.
A patient showing brownish pigmentation and with normal laboratory findings may be suffering from 
 1. Addison"s disease
 2. Fibrous dysplasia
 3. Neurofibromatosis
 4. None of the above
                            Oral Pathology
                            Answer: 1
                            Brownish pigmentation with normal laboratory findings may indicate Addison's disease.
Leukaemia should be high on a list of differential diagnosis when which of the following is noted? 
 1. Spontaneous bleeding
 2. Persistent headache
 3. Epigastric pain
 4. Chronic or acute arthralgia
                            Oral Pathology
                            Answer: 1
                            Spontaneous bleeding is a key indicator for considering leukemia in differential diagnosis.
The X-ray collimators commonly used in dentistry include the following except 
 1. Diaphragm collimator
 2. Tubular collimator
 3. Rectangular collimator
 4. Square collimator
                            Oral Pathology
                            Answer: 4
                            Square collimators are not commonly used in dentistry.
For extraction in a leukaemic patient 
 1. Consult physician
 2. Obtain WBC count
 3. Ontain platelet count
 4. All of the above
                            Oral Pathology
                            Answer: 4
                            For extraction in a leukemic patient, all of the above steps should be taken.
Dinesh, a 24-year-old male, complains of loose teeth in a single quadrant. His radiograph shows irregular bone loss and histopathology reveals eosinophils and histiocytes. The most probable diagnosis is 
 1. Hand-Schuller-Christian disease
 2. Paget"s disease
 3. Osteoclastoma
 4. Albright"s syndrome
                            Oral Pathology
                            Answer: 1
                            The most probable diagnosis for irregular bone loss and eosinophils is Hand-Schuller-Christian disease.
Open ended lead-lined cones reduce 
 1. Intensity of scattered radiation
 2. Intensity of primary radiation
 3. Level of scattered radiation
 4. All of the above
                            Oral Pathology
                            Answer: 3
                            Open-ended lead-lined cones reduce the intensity of scattered radiation.
Oral manifestation of infectious mononucleosis is most commonly 
 1. Bluish red spots opposite maxillary molar
 2. Pseudomembrane on gingival
 3. Pinpoint petechiae on the palate
 4. Gingival hyperplasia
                            Oral Pathology
                            Answer: 3
                            Pinpoint petechiae on the palate is the most common oral manifestation of infectious mononucleosis.