A developmental abnormality characterized by the presence of fewer than the usual number of teeth is_____________?

Related Mcqs:

1. 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

2. The usual order of appearance of the primary teeth in the mouth is____________?

   A. Central incisors, first molars, lateral incisors, second molars, canines
   B. Central incisors, lateral incisors, canines, second molars, first molars
   C. Central incisors, lateral incisors, first molars canines, second molars
   D. Central incisors, lateral incisors, first molars second molars, canines

3. Biochemical abnormality associated with osteogenesis imperfecta is increase in______________?

   A. Alkaline phosphatase
   B. Acid phosphatase
   C. Bicarbonate ion
   D. Phosphorylase enzyme

4. A 4-year old child has a normal complemented of primary teeth but they are gray and exhibit extensive occlusal and incisal wear. Radiographic examination indicates extensive deposits of secondary dentin in these teeth. Most likely this condition is______________?

   A. Neonatal hypoplasia
   B. Amelogenesis imperfecta
   C. Cleidocranial dysplasia
   D. Dentinogenesis imperfecta

5. An abnormal resorption pattern in primary teeth, delayed eruption of permanent teeth and a large tongue are the feature of_____________?

   A. Addison’s disease
   B. Hypothyroidism
   C. Hyperthyroidism
   D. Von-Recklinghausen disease

6. 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

7. The primary teeth that present the most outstanding morpholgic deviations from permanent teeth are______________?

   A. Central incisors
   B. Mandibular first molar
   C. Mandibular second molar
   D. Canines

8. Primary teeth differ from permanent teeth in following aspects ?

   A. Thickness of enamel and dentin
   B. Pulp chambers are longer
   C. Roots are flaring
   D. All of the above

9. The deciduous teeth can be differentiated from permanent teeth by_____________?

   A. Enamel prismatic arrangement
   B. Dentinal tubule arrangement
   C. Primary and secondary dentin
   D. Mineral content

10. A patient who has had a recent amalgam filling in the upper teeth has a gold filling in the lower teeth, the patient complains of pain. The reason for this can be mainly_____________?

    A. Improper amalgam filling
    B. Pulp exposure
    C. Galvanism
    D. None of the above