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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. When the inner epithelial epithelium columnar cells elongate and repolarize they differentiate into what?






2. When does macro/microdontia occur?






3. Where is the dental sac originally derived from?






4. When root formation is completed the portion of the basement membrane disintegrates its cells may become what?






5. What happens during the apposition stage?






6. What happens during the cap stage?






7. What are the clinical ramifications of concrescence?






8. What are the clinical ramifications of enamel dysplasia?






9. What are the etiological factors for anodontia?






10. What is microdontia?






11. Do odontoblasts start their secretion of matrix before the ameloblasts?






12. What is matrix?






13. What are the mature cells for alveolar bone?






14. What hard tissue has vascularity?






15. What are the incremental lines for dentin?






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






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






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






19. The oral epithelium is induced by the ectomesenchyme to produce what?






20. What are the major components of the tooth germ?






21. What is the important acelluar structure that seperates the oral epithelium and the ectomesenchyme?






22. What are the formative cells for cementum?






23. What is the main process involved in initiation?






24. What is an enamel pearl?






25. Where is the dental papilla originally derived from?






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






27. What are the processes involved in the cap stage?






28. What is fusion?






29. What is the function of the Hertwig's epithelial root sheath?






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






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






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






33. What are the incremental lines for enamel?






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






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






36. What are succedaneous teeth?






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






38. What is amelogenisis?






39. What is macrodontia?






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






41. What is dens in dente?






42. What are the formative cells for dentin?






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






44. How many types of cells are found in the enamel organ in the bell stage?






45. What layer serves as protection for the enamel organ?






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






47. What processes are involved in the bell stage?






48. What are the formative cells for enamel?






49. What are the clinical ramifications of micro/macrodontia?






50. The preameloblasts induce dental papilla cells to differentiate into what?