Oral medicine

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BDS Third Professional



Max. Marks 21 Time: 30 minutes

Total No. of MCQs 21

One mark for each

The most effective anti-plaque agent is

  1. Benzydamine

  2. Potassium Nitrate

  3. Amphotericine

  4. Chlorhexidine

  5. Chlortetracycline

Prophylactic bisphosphonates are indicated in which of the following patients

  1. Patients above the age of 50

  2. Patients with serum calcium deficiency

  3. Patients on radiation therapy of bone cancers

  4. Patients with hyperparathyroidism

  5. Patients on prednisolone ≥5mg/day for more than 3 months

A 20 year old female student presents with red patches on her tongue that move from one location to another. They have been previously symptomless but have recently become sensitive to spicy foods and tongue has become sore. Student feels tired & week. The most likely cause of these symptoms are:

  1. Progression of geographic tongue to malignancy

  2. Iron deficiency anaemia accompanying geographic tongue

  3. Patient has developed lichen planus from benign migratory glossitis

  4. Symptoms are typical of geographic tongue and no further management is required

  5. Malnutrition because of benign migratory glossitis

A 70 year old gardener presents with crusting of lower lip for the last 4-5 years which gets worse in the cold weather. It is diagnosed as actinic cheilitis which shows significant dysplasia on histopathology. Its management is:

  1. Advise the patient to apply Vaseline when going outdoors

  2. Advise the patient to avoid of sun exposure

  3. Advise the patient to apply sun blocks with high sun protection factor (SPF)

  4. Vermillionectomy or Laser ablation, sun avoidance & use of sun screens

  5. No management is required as the lesion is self healing

A 30 year old male presents with a painful ulceration on the gingiva adjacent to carious lower right 5 for the last one week. He has been placing aspirin as a remedy for toothache in this carious tooth. The management of this patient includes:

  1. Treat the carious tooth

  2. Take an incisional/excisional biopsy of the ulceration depending upon its size

  3. Anti-septic mouthwash should be added to aspirin

  4. Extraction of the adjacent tooth and application of lignocaine gel on ulceration

  5. Cessation of aspirin placement and application of topical benzydamine and chlorhexidine preparations

A 50 years old ex-smoker is referred to you by a cardiologist. He has a history of severe recurrent oral ulcerations affecting lateral borders of tongue, labial mucosa & soft palate. Ulcers are one or two at a time and persist for about 8 weeks. Patient has been on potassium channel activator (nicorandil) for unstable angina and aspirin (75mg/day) since his MI 9months ago. He has no eye, skin or genital ulcerations. The most probable cause of these major RAS ulcers is:

  1. Aspirin burn

  2. Smoking cessation

  3. Use of nicorandil (potassium channel activator)

  4. Behcet’s disease

  5. Both B & C

All of the following are etiologically associated with aphthous ulcers except:

  1. Trauma, stress

  2. Diabetes Mellitus

  3. Smoking cessation

  4. Microbial agents

  5. Genetic factors

In a patient with chronic hyperplastic candidiasis, topical antifungal treatment fails to eliminate the infection. Systemic anti-fungal (Fluconazole) was prescribed to this patient. The best dosage regime of fluconazole is

  1. 50-100mg daily

  2. 150-200mg daily

  3. 500mg daily

  4. 1g daily

  5. 2g daily

A 40 year old female presents to you with painless, indurated, dark red swelling in her mouth with glazed surface. These were diagnosed as chancres and Traponema Pallidum was isolated from these chancres. The first & second drug of choice for this patient is

  1. Tetracycline and Erythromycin

  2. Acyclovir and Fluconazole

  3. Fluconazole and tetracycline

  4. Penicillin and Tetracylince or erythromycin

  5. Penicillin only

A patient presents with soreness and bleeding of gingivae, necrosis of the gingival papillae and marked halitosis. The drug of choice in this case would be

  1. Metronidazole 200mg T.D.S with chlorhexidine mouthwash

  2. Penicillin 500mg T.D.S with amphotericin mouthwash

  3. Chlorhexidine mouthwash with lignocaine gel

  4. Systemic steroids and anti-fungals

  5. Systemic anti-virals and anti-fungals

For severe cases of RAS and ulcerations associated with Behcet’s disease and HIV that have failed to respond to topical & systemic steroids, the drug of choice for patients excluding pregnant mothers is:

  1. Colchicine

  2. Azathioprine

  3. Thalidomide

  4. Ciclosporin

  5. Fluconazole

A 65 year old male presents to you for dental treatment. He is a chronic chain smoker (30cigarettes/day) and has a croaky voice. He gives a 2 months history of increasing hoarseness. On examination, a hard, fixed, non-tender jugulo-omohyoid lymph node is palpable. Which lesion would you suspect to run further investigations?

  1. Oral Squamous cell carcinoma

  2. Spread of dental infection (abscess) to larynx

  3. Severe tonsillitis

  4. Lymphadenopathy of jugulo-omohyoid region

  5. Squamous cell carcinoma of larynx

The most frequent cause of xerostomia is:

  1. Aplasia or atresia

  2. Drugs

  3. Sjogren’s syndrome

  4. Therapeutic irradiation

  5. Mouth breathing

An 18 year old male presents with a swelling of the right side of his neck. The differential diagnosis includes all except:

  1. Cervical lymphadenopathy

  2. Thyroglossal cyst

  3. Carotid body tumour

  4. Pharyngeal pouch

  5. Cystic hygroma

The normal flow rate of unstimulated whole saliva is approximately

  1. 0.1ml/minute

  2. 0.3ml/minute

  3. 1-2ml/minute

  4. 4-6ml/minute

  5. 5-10ml/minute

Carlson-Crittenden collector is used in

  1. Sialometry to collect saliva

  2. Sialography to inject radio-opaque dye into the gland

  3. Scintigraphy to label 99Tm

  4. Sialochemistry

  5. Ultrasonography

All of the following are true about chewing xylitol containing sugar free gums in patients of xerostomia, except:

  1. Increases flow of stimulated saliva to levels 3-10 times the normal value

  2. Helps preventing caries, enhancing buffering capacity & remineralization

  3. Increases resting salivary flow rate for up to 30 minutes beyond period of chewing

  4. Has anti-microbial, anti-caries effect

  5. Regeneration of lost secretory units in the salivary glands

A 55 year old female presents to you with xerostomia, xerophthalmia and rheumatoid arthritis. This patient is diagnosed with secondary sjogren’s syndrome. She has developed a persistent parotid enlargement. What lesion do you suspect in this gland to run further investigation?

  1. Hodgkin’s lymphoma

  2. Non-Hodgkin’s lymphoma

  3. Burkit’s lymphoma

  4. Systemic sclerosis

  5. SLE

A 51 year old Jewish man presents with a 9 months history of mouth ulceration causing discomfort in eating. He reports of large blisters inside his lips that rapidly burst. He has also developed skin lesions on his back & eroded skin can be seen clinically. There are no ocular or genital symptoms. Nikolsky sign is positive. The investigation to make definitive diagnosis include:

  1. Direct immunoflourescence(IMF) of peri-lesional tissue & indirect immunoflourescence(IMF) of blood serum

  2. Indirect IMF of peri-lesional tissue & direct IMF of blood serum

  3. Indirect IMF of lesional tissue & indirect IMF of blood serum

  4. Direct IMF of lesional tissue & indirect IMF of blood serum

  5. Nikolsky sign is positive and no further investigation is required

A 5 year old girl is referred to you by a dermatologist for dental treatment. On oral examination, you find hypoplastic teeth, scarring caused by trauma from suckling, eating & tooth brushing resulting into immobility of tongue & lips, cracks at corners of mouth & limited mouth opening. What is the most probable diagnosis is this case?

  1. Mucous membrane pemphigoid

  2. Pemphigus vulgaris

  3. Epidermolysis bullosa

  4. Bullous pemphigoid

  5. Erosive lichen planus

A 40 year old male presents to you with paroxysmal, sharp, lancination pain affecting one side of the throat and base of the tongue that is precipitated by swallowing, chewing & coughing. The most probable diagnosis in this case is:

  1. Trigeminal neuralgia

  2. Glossopharyngeal neuralgia

  3. Post herpetic neuralgia

  4. Giant cell arteritis

  5. Frey’s syndrome























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