MDS PREP
All of the following statements about an intraoral dental X-ray film are true except
1. It is composed of a cellulose acetate base coated with a silver bromide emulsion
2. It has a thin sheet of lead foil that lies in front of the film to prevent overexposure
3. It has an embossed dot on it which should be orientated towards the source of X-rays
4. It is exposed by the direct action of X-rays on the emulsion
Oral Pathology
Answer: 2
The statement about the lead foil is incorrect; it lies behind the film to prevent backscatter.
Which of the following intraoral sites is taken as confirmation biospy for amyloidosis
1. Tongue
2. Gingiva
3. Palate
4. Buccal mucosa
The gingiva is taken as the confirmation biopsy site for amyloidosis.
When treated with simple curettage which odontogenic tumour is most likely to recur
1) Complex odontoma
2) Compound odonotoma
3) Odentogenic myxoma
4) Ameloblastic fibroma
Oral Pathology
Answer: 3
Explanation: Odontogenic myxoma is known for its aggressive behavior and tendency to recur after treatment, including curettage. It is a benign but locally invasive tumor, and simple curettage often does not remove the entire tumor, leading to recurrence.
Osteomalacia is
1. Defective osteoid + normal mineralization
2. Normal osteoid + defective mineralization
3. Abnormal osteoid + abnormal mineralization
4. Normal osteoid and demineralization
Osteomalacia is characterized by abnormal osteoid and abnormal mineralization.
Darier"s disease is the other name for
1. Pernicious anaemia
2. Deficiency of Vit A involving mucosa and epithelium
3. Rickets involving teeth and bones
4. Protein malnutrition
Oral Pathology
Answer: 2
Darier’s disease is associated with a deficiency of Vitamin A involving mucosa and epithelium.