Supplementary bds III (Third) Prof. Annual Examination 2014-15 Course Code: bds303



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Supplementary BDS III (Third) Prof. Annual Examination 2014-15
Course Code: BDS303 Paper ID: S313103

Oral Pathology and Oral Microbiology
Time: 3 Hours Max. Marks: 70 Max Marks: 75
Note: Attempt all questions.

Part-A
1. Define premalignant lesions and conditions. Discuss the etiology, clinical features, histological features and treatment of Leukoplakia in detail. (8)

2. Classify Odontogenic cysts. Discuss dentigerous cyst in detail. (8)

3. Write short notes on: (3x3=9)

a) Geographic Tongue

b) Reversible & Irreversible pulpitis

c) Histopathology of enamel caries

4. Select the best answer for each question: - (2x5=10)


  1. A pear shaped radiolucency causing displacement of the roots of vital maxillary lateral and cuspid teeth is characteristics of:

a) Globulomaxillary cyst

b) Apical periodontal cyst

c) Primordial cyst

d) Nasoalveolar cyst

ii) The most common route by which infection may reach the pulp is through:

a) The blood stream

b) Traumatic injuries

c) Dental caries

d) Erosion
iii) A cyst occurring under the tongue, caused by obstruction of a salivary gland duct, is called a:

a) Follicular cyst

b) Dentigerous cyst

c) Ranula

d) Dermoid cyst

iv) The most common malignancy found in the oral cavity is:

a) Basal cell carcinoma

b) Transitional cell carcinoma

c) Melanoma

d) Squamous cell carcinoma


v) Koplik’s spots are an early intraoral manifestation of:

a) Varicella

b) Mumps

c) Rubella

d) AIDS
Part-B
1. Classify Odotogenic tumors. Discuss Ameloblastoma in detail. (8)
2. Classify vesiculobullous lesions. Discuss the pathogenesis, clinical features, histological features and treatment of Pemphigus. (8)
3. Write short notes on: (3x3=9)

a) Bell’s Palsy.

b) Histopathology of Fibrous Dysplasia

c) Oral candidiasis


4. Write most appropriate response: - (2x5=10)

i) White lesion of the oral mucosa are characteristic of the following except:

a) Hyperkeratosis

b) Leukoedema

c) Lichen planus

d) Medium rhomboid glossitis


ii) White interlacing lines (striae of Wickham) on the buccal mucosa are a characteristic clinical feature of:

a) Leukoplakia

b) Lupus Erythematous

c) Lichen planus

d) Psoriasis


iii) Papillary cystadenoma lymphomatosum, which occurs almost exclusive in the parotid gland, is commonly called:

a) Cylindroma

b) Pleomorphic adenoma

c) Warthin’s tumor

d) Mikulicz’s disease
iv) Inflammation of the lips is referred to as:

a) Stomataitis

b) Glossitis

c) Cheilitis

d) Vincent Angina
v) Mottled enamel is produced by:

a) Syphilis

b) Febrile diseases

c) Fluorine



d) Acids


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