Colour of teeth stained by tetracycline appear _________ under UV light?

Related Mcqs:

1. A child with permanently stained teeth reports, He was most probably administered_____________?

   A. Disphenyl hydantoin
   B. Diphenhydramine
   C. Digoxin
   D. Doxycycline

2. Tetracycline stains appear as______________?

   A. Yellow and brown stains in enamel and dentin
   B. Yellow and brown stains only in enamel
   C. Yellow and brown stains only in dentin
   D. Only yellow stain in enamel

3. A 20yr old patient reports with multiple swelling of the jaws. Clinical examination reveals multiple hard swellings involving the jaws and intra orally several missing teeth are noticed. Panoramic radiograph reveals multiple radio opaque lesions in the maxilla and the mandible with multiple impacted teeth and supernumerary teeth indicative of Gardeners syndrome: The above mentioned condition is______________?

   A. Autosomal dominant disease
   B. Autosomal recessive disorder
   C. X-linked disease
   D. A syndrome of unknown cause

4. Patient reports with discolored teeth bearing brown stains. The teeth glow fluorescent in UV light. The most likely diagnosis is____________?

   A. Porphyria
   B. Amelogenesis imperfecta
   C. Hutchinson’s teeth
   D. Tetracycline staining of teeth

5. Tetracycline is contraindicated in_____________?

   A. Children
   B. Pregnancy
   C. Renal failure
   D. All of the above

6. The bacterial resistance to tetracycline is due to___________?

   A. Alteration of drug binding sites
   B. Alteration of dehydrofolate reductase
   C. Inactivation of drug by enzymes
   D. Decreased uptake of drug by bacteria

7. Tetracycline is more preferred in periodontics because______________?

   A. It is broad spectrum antibiotic
   B. It has anticollagenolytic effect
   C. All of the above
   D. None of the above

8. Tetracycline in children causes____________?

   A. Calcification
   B. Missing teeth
   C. Discolored teeth
   D. Peg teeth

9. Tetracycline chelates with______________?

   A. Ca salts
   B. Mg salts
   C. All salts
   D. All of the above

10. Which of the following is a characteristic of tetracycline stains ?

    A. There is less deposition in dentine as compared to enamel
    B. Is always accompanied by hypolastic defects
    C. Stains are dark brown in color
    D. Stained teeth fluoresce light yellow under U.V light