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Dentistry Tooth Development And Eruption

Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Where is the dental sac originally derived from?






2. When the undifferentiated cells of the dental sac come into contact with the root dentin they differentiate into what?






3. What are succedaneous teeth?






4. What will the dental sac give rise to?






5. What is matrix?






6. What is tubercle?






7. What are the etiological factors for enamel pearl?






8. What are the etiological factors for anodontia?






9. How is the dentinocemental junction formed?






10. What cell bodies are involved in the eruption and mineralization process but will be lost after eruption?






11. Which layer in the bell stage has star shaped cells?






12. What is the embryological background for enamel?






13. What is gemination?






14. What is the outer portion of the ectoderm in the initiation stage?






15. What is enamel dysplasia?






16. What are the etiological factors of concrescence?






17. What are the development disturbances of the apposition and maturation stages?






18. What are the clinical ramifications of anodontia?






19. What are the mature cells for alveolar bone?






20. What is cementogenisis?






21. What will the inner cells of the dental lamina differentiates into?






22. What happens to the thickened non tooth producing portions of the dental lamina eventually?






23. What is amelogenisis?






24. When does macro/microdontia occur?






25. The buds of the dental lamina - together with the surrounding ecto mesenchyme - will develop into what?






26. Odontoblasts leave attached cellular extensions in the length of the predentin called what?






27. What type of tissue is dentin - cementum - and alveolar bone?






28. What is the predominate process in the bell stage?






29. In the cap stage the tooth bud does not grow - what happens?






30. What is the embryological background for dentin - cementum and alveolar bone?






31. What happens during the apposition stage?






32. When does the tooth bud become a tooth germ?






33. What are the clinical ramifications?






34. When does the process of root development take place?






35. What else undergoes proliferation in the bud stage besides the dental lamina?






36. What is the time span for the bud stage?






37. Where is the enamal organ originally derived from?






38. What is dens in dente?






39. The stratum intermediate is located inner or outer?






40. What are the etiological factors for fusion?






41. What are the 2 layers in the dental papilla within the concavity of the enamel organ?






42. Active eruption






43. What hard tissue is can not have tissue formation after eruption?






44. What is the site for the future dentioenamel junction?






45. What are the clinical ramifications of supernumerary teeth?






46. What are the mature cells for dentin?






47. What kind of cells occur in the inner enamel epithelium?






48. The stage named for extensive proliferation of the dental lamina into oval masses penetrating into the ectomesenchyme?






49. What kind of cells reside in the stratum intermediate?






50. What hard tissue has vascularity?