What is the histologic change in muscles in myasthenia gravis? 1. Gradual disappearance of muscle fibers 2. Widespread degeneration and hyalinization of muscle fibers 3. Hypertrophy of all muscle fibers 4. No demonstrable changes in muscles
Oral PathologyAnswer: 4
Delayed eruption of at least part of the dentition is a recognized feature of all of the following except 1) Rickets 2) Congenital hyperthyroidism 3) Cleidocranial dysplasia 4) Cherubism
Oral PathologyAnswer: 2
Radiation energy acts as carcinogenic agent by:
1. Chromosomal breakdown
2. Translocations
3. Point mutations
4. All of the above
PathologyAnswer: 4
Splitted papule at corner of mouth is seen in 1) Recurrent herpes labialis 2) Recurrent herpetic stomatitis 3) Increased vertical dimension 4) Secondary syphilis
Oral PathologyAnswer: 4
Which of the following tumours is characterized by the presence of Leisengang rings and Driven Snow radiological feature 1. Ameloblastoma 2. Calcifying epithlial odontogenic tumour 3. Odontoma 4. Adamatoid odontogenic tumour
Oral PathologyAnswer: 2
All of the following lesions may cause pain, except
1. primary herpetic stomatitis
2. cutaneous lesions of psoriasis
3. traumatic neuroma
4. oral lesions of Reiter’s syndrome
Oral PathologyAnswer: 4
Persons with the greatest risk of oral cancer 1) Have a poor oro-dental hygiene, nutritional deficiencies and are chronic alcoholics 2) Are middle aged, have a poor oro-dental hygience and regularly use tobacco 3) Are old, chronic alcoholics and regularly use tobacco 4) Are yound, have poor oro-dental hygiene and are heavy smokers
Oral PathologyAnswer: 3
Compound odontoma shows on a radiograph as 1. Supernumerary teeth 2. Radiolucent and radiopaque areas 3. Masses of calcified areas 4. Distinguishable tooth-like structures
