11q: a 60 year old man presents with an ulcer on lateral margin of tongue also complaints of ear pain , most probable diagnosis ?
- dental ulcer
- carcinomatous ulcer
- tuberculous ulcer
- syphilitic ulcer
answer: b . carcinomatous ulcer. The clue in the question is the site of the ulcer and the age of the patient with pain reference . the most common site of carcinoma of tongue is the anterior 2/3 rd or middle 1/3 rd of the tongue .
12q: anatomical structure injured in excision of ranula ?
- lingual vein
- lingual artery
- submandibular duct
- parotid duct
answer: c . submandibular duct .
13q: areas of carcinoma of oral mucosa can be identified by staining with ?
- 1% zinc chloride
- 2% silver nitrate
- Gentian violet
- 2 % toluidene blue
Answer: d . 2 % toluidene blue .
14q: radiographic finding of floating teeth can be seen in ?
- ectodermal dysplasias
- cleidocranial dysplasias
- histiocytosis – X
answer: d . histiocytosis – X .
15q: dentigerous cyst arises from ?
- an unerupted tooth
- apex of an infected tooth
- nasopalatine cysts
- solitary bone cysts
- multi locular keratocytes
answer: a . an unerupted tooth .
16q: the commonest pre-malignant condition of oral cancer is ?
- apthous ulcer
- lichen planus
answer: a . leukoplakia .
17q: multiple painful ulcers on tongue are seen in all except ?
- apthous ulcers
- tuberculous ulcers
- herpes ulcers
- carcinomatous ulcers
answer: d . carcinomatous ulcers are normally painless in the early stages , but in advanced cases due to involvement of surrounding structures they become painful .
18q: predisposing factors for development of oral carcinoma is ?
- all the above
answer: d . all the above .
19q: a full thickness loss of middle one third of the upper lip is best reconstructed by?
- nasolabial flap
- cheek flap
- abbey flap
- estlander flap
answer: c,d . abbey-estlander flap is most commonly used in the reconstruction of the upper lip .
20q: which of the following best represents ranula ?
- a type of epulis
- a thyroglossal cyst
- cystic swelling in the floor of mouth
- forked uvula
answer: c . cystic swelling in the floor of mouth .