The deciduous teeth can be differentiated from permanent teeth by_____________?

Related Mcqs:

1. While charting the dentition of a child, the pedodontist finds that the following teeth are present in all the four quadrants; permanent central incisor , permanent lateral incisor , decidous cuspid , decidous first molar, decidous 2nd molar and permanent 1st molar. The eruptive pattern may be considered most nearly normal for a child aged_____________?

   A. 3-6 years
   B. 7-10 years
   C. 11-14 years
   D. 15- 18 years

2. 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

3. The first sign of future deciduous teeth as a thickening of oral ectoderm appears at about_____________?

   A. 25th day of Intra uterine life
   B. 34th day of Intra uterine life
   C. 56th day of Intra uterine life
   D. 20 wks of Intra uterine life

4. 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

5. 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

6. 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

7. The successors of deciduous teeth develops form_______________?

   A. Successional lamina
   B. Dental lamina
   C. Stellate reticulum
   D. Neutral ectodermal cells

8. In a dried skull, holes on the lingual aspects of the deciduous teeth are called_____________?

   A. Volkmann canals
   B. Canals of Hirchfeld and Zuckerland
   C. Herversian canals
   D. Gubernacular canals

9. Premature exfoliation of deciduous teeth is seen in_____________?

   A. Hypophosphatasia
   B. Hypophosphatemia
   C. Hyper phosphtasia
   D. Hyperparathryroidism

10. The apical foramen of a fully developed permanent tooth is usually lined by_____________?

    A. Dentin
    B. Cementum
    C. Epithelial rest cells
    D. The Epithelial diaphragm