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 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.
Precocious puberty is most characteristic of which of the following/
1. Jaffe"s syndrome
2. Monostotic fibrous dysplasia
3. Polyostotic fibrous dysplasia
4. Albright"s syndrome
Oral Pathology
Answer: 4
Precocious puberty is most characteristic of Albright's syndrome.
Which of the following is associated with a low concentration of ionized calcium in the serum?
1. Hypothyroidism
2. Osteogenesis imperfecta
3. Paget"s disease of the bone
4. Tetany
Oral Pathology
Answer: 4
Tetany is associated with a low concentration of ionized calcium in the serum.
Initiator in developing solution is
1. Acetic acid
2. Sodium thiosulphate
3. Hydroquinone
4. Potassium bromide
Oral Pathology
Answer: 3
Hydroquinone is the initiator in developing solutions for photographic films.
Chemotherapy can be successful during treatment of
1. Ameloblastoma
2. Leukaemia
3. Fibrosarcoma
4. Basal cell carcinoma
Oral Pathology
Answer: 2
Chemotherapy can be successful in the treatment of leukemia.
Which of the following has been implicated due to sunlight
1. Basal cell carcinoma
2. Lymphoepithelioma
3. Junctional nevus
4. Verruca vulgaris
Oral Pathology
Answer: 1
Basal cell carcinoma (BCC) is a type of skin cancer that is strongly associated with prolonged exposure to ultraviolet (UV) radiation from sunlight.
Asymptomatic facial swelling is seen in
1. Ludwings angina
2. Angioneurotic oedema
3. Bell"s palsy
4. All of the above
Oral Pathology
Answer: 2
Angioneurotic edema is characterized by asymptomatic facial swelling.