MDS PREP
Silver tattoo is due to
1. Deposition of Ag amalgam in mucosa
2. Deposition of Ag amalgam in bone
3. Deposition of Ag amalgam in dentin
4. Deposition of Ag amalgam in enamel
Oral Pathology
Answer: 1
Silver tattoo is due to the deposition of Ag amalgam in the mucosa.
A young patient who has a long standing habit of sucking lemons has loss of tooth substance affecting the anterior teeth. The correct term for this gradual loss of tooth substance is called
1. Abrasion
2. Attrition
3. Erosion
4. Intrusion
Oral Pathology
Answer: 3
The gradual loss of tooth substance due to sucking lemons is called erosion.
The epithelium which covers a healed ulcer is derived from
1. undifferentiated mesenchymal cells of the ulcer
2. intact epithelium at the ulcer margin
3. transformation of fibroblasts to epithelial cells
4. endothelial cells via the blood stream
Oral Pathology Answer: 2
The epithelium which covers a healed ulcer is derived from intact epithelium at the ulcer margin
Aplastic anaemia is common with
1. Chloramphenicol
2. Cephalosporin
3. Tetracycline
4. Pencillin
Oral Pathology
Answer: 1
Aplastic anemia is commonly associated with chloramphenicol.
X-rays films are insensitive to which light
1. Yellow and red
2. Red
3. White
4. Blue and green
X-ray films are insensitive to yellow and red light.
An odontogenic neoplasm that may be mistaken for an ameloblastoma but is of mixed tissue origin and considerably less aggressive is
1) A cementoblastoma
2) An odontogenic fibroma
3) A cementifying fibroma
4) An ameloblastic fibroma
Oral Pathology
Answer: 4
An ameloblastic fibroma is a benign odontogenic tumor that contains both epithelial and mesenchymal components, making it a mixed tissue neoplasm. While it can resemble an ameloblastoma histologically, it is generally less aggressive and has a better prognosis. Ameloblastic fibromas are often found in younger patients and can be treated effectively with surgical excision.
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.
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.