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Dentistry Tooth Development And Eruption

Instructions:
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. What is the important acelluar structure that seperates the oral epithelium and the ectomesenchyme?






2. What happens during the bell stage?






3. Which teeth are nonsuccedaneous?






4. What happens during the appositional stage?






5. What are the cell layers found in the enamel organ in the bell stage?






6. What are the clinical ramifications of dens in dente?






7. How is the reduced enamel epithelium created?






8. When does macro/microdontia occur?






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






10. What are the etiological factors for dens in dente and gemination?






11. What are the clinical ramifications of concrescence?






12. Where is the dental papilla originally derived from?






13. What wll the inner enamel epithelium differentiate into?






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






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






16. What are the etiological factors for enamel pearl?






17. What are the etiological factors for supernumerary teeth?






18. What happens during the bud stage?






19. What stage does the dental tissues subsequently fully mineralize






20. What is the predominate process of the cap stage?






21. What are entrapped cementoblasts called?






22. What are the incremental lines for dentin?






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






24. What is the time span for initiation?






25. What conveys communications between the cells of the enamel organ - the dental papilla - and the dental sac allowing tissue interactions?






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






27. What is the main process involved in initiation?






28. What are the mature cells for alveolar bone?






29. The remaining ectomesenchyme surrounding the outside of the enamel organ condenses into what?






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






31. What is the inner mass in the cap stage that forms a concavity of the enamel organ?






32. What are the etiological factors of concrescence?






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






34. What are the clinical ramifications of gemination?

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






36. What is the structure responsible for root development?






37. What are the incremental lines for enamel?






38. What are the etiological factors for micro/macrodontia?






39. What is cementogenisis?






40. What is the process involved in the maturation stage?






41. Where is the dental sac originally derived from?






42. What do the odontoblasts do?






43. When does dens in dente occur?






44. What are the mature cells for cementum?






45. What is concrescence?






46. What is an enamel pearl?






47. What are the formative cells for enamel?






48. What are the etiological factors of tubercle?






49. What causes the induction of the preameloblasts to differentiate into ameloblasts?






50. What is dens in dente?