Ectodermal cells in tooth bud are responsible for_______________?

Related Mcqs:

1. The bud, cap and bell stage of the developing tooth are based, on growth of the______________?

   A. Stellate reticulum
   B. Dental papilla
   C. Enamel organ
   D. Dental sac

2. The tooth bud for the third molar is initiated at about the age of______________?

   A. 6th month I.U
   B. 1st year of life
   C. 2nd year of life
   D. 8th year of life

3. Which of the following structures is not of ectodermal origin_______________?

   A. Hunter schreger bands
   B. Enamel spindles
   C. Enamel tufts
   D. Enamel lamellae

4. Periodontal fibres joining cemental surface of one tooth, to cemental surface of adjacent tooth are called____________?

   A. Gingivodental
   B. Cemental fibres
   C. Horizontal fibres
   D. Transseptal fibres

5. A infant with cleft lip, palate, polydactly, microcephaly with holoprosencephaly, ectodermal scalp defect is suffering from ?

   A. Trisomy 21
   B. Trisomy 18
   C. Trisomy 13
   D. Turner syndrome

6. In ectodermal dysplasia all of the following structures are affected except:___________?

   A. Hair
   B. Nails
   C. Teeth
   D. Salivary glands

7. Which of the following are seen in ectodermal dysplasia?

   A. Hyperpyrexia
   B. Protuberant lips and frontal bossing
   C. Defective or absence of sweat glands
   D. Any of the above

8. Ectodermal dysplasia is:___________?

   A. Autosomal recessive
   B. Autosomal dominant
   C. X-linked dominant
   D. X-linked recessive

9. The condition involved with an unerupted tooth or impacted tooth is _________________?

   A. Dentigerous cyst
   B. Mural ameloblastoma
   C. Adenomatoid odontogenic tumor
   D. All of the above

10. An asymptomatic tooth has deep has deep caries on occlusal surface. Radiograph shows radiopaque mass at apex of the tooth: this mass is most likely to be:____________?

    A. Cementoma
    B. Condensing Osteitis
    C. Chronic apical periodontitis
    D. Acute apical periodontitis