All Free Oral Pathology and Medicine MCQs with Answers

• A. Culture with giemsa stain:
• B. Culture with wright strain
• C. Flourescent stain for cytology
• D. Routing cytology

Explanation: Herpes simplex can be demonstrated in a cytological smear by immunofluorescent staining, which detects viral antigen in infected cells.

• A. Ranula
• B. Diabetes mellitus
• C. Pernicious anaemia
• D. Local irritation

Explanation: Burning tongue may accompany diabetes, pernicious anaemia and local irritants, but a ranula is a mucous retention pseudocyst and does not…

• A. Molluscum contagiosum
• B. All of the above
• C. Squamous papilloma
• D. Focal epithelial hyperplasia

Explanation: Molluscum contagiosum, focal epithelial hyperplasia and squamous papilloma are all virus-induced epithelial proliferations caused by…

• A. Trigeminal neuralgia
• B. Sicca syndrome
• C. Dry socket
• D. Myospherulosis

Explanation: Alveolitis sicca dolorosa is the painful post-extraction condition caused by loss or breakdown of the socket blood clot, commonly called…

• A. Lip reading
• B. Lip Schutz bodies
• C. Lip pits
• D. Lip prints

Explanation: The grooves and patterns of lip prints, known as cheiloscopy, can be recorded and compared for forensic identification.

• A. Corynebacterium
• B. Staphylococcus aureus
• C. Candida
• D. Vincent's angina

Explanation: Corynebacterium diphtheriae, Candida, and Vincent’s angina can produce adherent membranes or pseudomembranes in the pharynx.

• A. Recurrent herpetiform ulcers
• B. Recurrent aphthous minor
• C. Recurrent aphthous major
• D. Acute herpetic gingivostomatitis

Explanation: Recurrent aphthous major ulcers are deep, persist for several weeks, and commonly heal with scarring.

• A. Sarcoidosis
• B. Histoplasmosis
• C. Candidiasis
• D. Behcet's disease

Explanation: A positive pathergy test, in which minor trauma produces a papule or pustule, is a classic feature of Behçet’s disease.

• A. symptoms are similar
• B. life long immunity results
• C. vesicles occur with both diseases
• D. intranuclear inclusion bodies are present

Explanation: Recurrent aphthae and recurrent herpes can both produce repeated painful oral ulcerative episodes, making their symptoms clinically…

• A. Biopsy
• B. Blood studies
• C. Bacterial smear
• D. Blood chemistry

Explanation: Lupus vulgaris is a chronic form of cutaneous or mucosal tuberculosis, and biopsy can demonstrate the characteristic granulomatous…

• A. Recurrent herpetic gingivitis
• B. Recurrent apthous ulcer
• C. Acute necrotizing ulcerative gingivitis
• D. Recurrent herpes labialis

Explanation: A canker sore is the common name for a recurrent aphthous ulcer, usually a painful, shallow ulcer on non-keratinised oral mucosa.

• A. Condylomata lata
• B. Mucous patches
• C. lupus vulgaris
• D. Lues maligna

Explanation: Lues maligna is a severe, explosive form of secondary syphilis associated particularly with immunocompromised patients.

• A. Syphilis
• B. Tuberculosis
• C. Histoplasmosis
• D. Actinomycosis

Explanation: A painless, slowly progressive or burrowing oral ulcer, particularly a syphilitic chancre or gumma, points toward syphilis.

• A. Fungal
• B. Bacterial
• C. Viral
• D. Parasitic

Explanation: Despite its fungus-like name, botryomycosis is a chronic bacterial infection, commonly caused by Staphylococcus aureus.

• A. pyogenic granuloma
• B. fibrous dysplasia
• C. ancrum oris
• D. vincent's disease

Explanation: Noma, also called cancrum oris, is a rapidly destructive gangrenous infection of the orofacial tissues, usually in severely malnourished…

• A. Chancre
• B. Mucous patch
• C. Gumma
• D. Syphilitic glossitis

Explanation: Syphilitic glossitis is a late, destructive manifestation of syphilis that can undergo malignant transformation, particularly to squamous…

• A. Streptococcus sangius
• B. Streptococcus mutans
• C. Borellia vincentii
• D. Staphylococci albus

Explanation: Streptococcus sanguis, now usually called Streptococcus sanguinis, has historically been implicated in recurrent aphthous stomatitis.

• A. ANUG
• B. Secondary stage of syphilis
• C. Diphtheritic lesion
• D. Desquamative gingivitis

Explanation: Diphtheria produces a thick gray pseudomembrane that is firmly adherent, so attempted removal is painful and may cause bleeding.

• A. Candida albicans
• B. Histoplasma capsulatum
• C. Nocarda braziliances
• D. Actinomyces israelii

Explanation: Sulfur granules are yellow colonies of Actinomyces, classically Actinomyces israelii, within draining pus.

• A. Trepenoma pallidium
• B. Actinomycosis
• C. Mycobacterium tuberulosis
• D. Streptococcus

Explanation: Leutic glossitis is a late oral manifestation of syphilis caused by Treponema pallidum.