Gemination of teeth occur due to______________?

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. 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

3. Cavity formation in a tooth, due to dental caries is due to______________?

   A. Destructive potential of streptococcus mutans
   B. Destructive potential of lactobacillus acidophilus
   C. Lateral spread of caries along DE junction and weakening of the outer covering enamel
   D. Mastectomy force and unrelated to the extent of carious process

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. Maximum contact between occlusal surfaces, of maxillary and mandibular teeth occur during________________?

    A. Centric occlusion
    B. Rest position
    C. Protrusive contacts
    D. Laterotrusive contacts