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

Related Mcqs:

1. 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

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 successors of deciduous teeth develops form_______________?

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

4. 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

5. Premature exfoliation of deciduous teeth is seen in_____________?

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

6. Generalised thickening of cortical and cancellous bones is seen in_______________?

   A. Osteopetrsis
   B. Pagets disease
   C. Osteogenesis imperfecta
   D. Infantile hyperostosis

7. Oral lesions on the tongue and other mucosal surfaces of the oral cavity is caused by the deficiency of_______________?

   A. Vit – B1
   B. Niacin
   C. Vit – C
   D. Vit – K

8. A 9 year old child’s mother comes to dental clinic with the complaint of oral ulceration, fever and shedding of skin of palms and soles: she is giving history of premature shedding of teeth and increased sweating she is also giving one month history of using any new teething gel available in market. The child is suffering form____________?

   A. Acrodynia
   B. Pemphigus vulgaris
   C. Epidermolysis Bullosa
   D. Erosive lichen planus

9. A twenty-one-year-old woman complains that regular, gentle brushing of her teeth is painful besides causing profuse bleeding. Oral examination reveals the loss of epithelium from the attached gingival of both arches. Which of the following dermatological problems is this patient most likely to have?

   A. Benign mucous membrane pemphigiod
   B. Chronic discoid lupus erythematosus
   C. Pemphigus
   D. Psoriasis

10. The normal pH of the saliva is about_____________?

    A. 5.5
    B. 9.5
    C. 7.5
    D. 8.5