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






2. What are the mature cells for cementum?






3. What are the formative cells for alveolar bone?






4. After the enamel apposition ceases the crown area of each primary or permanent tooth what happens?






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






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






7. When does dens in dente occur?






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






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






10. What is anodontia?






11. When does macro/microdontia occur?






12. What stage does supernumerary teeth occur?






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






14. What is cementogenisis?






15. What stage does the dental tissues subsequently fully mineralize






16. What hard tissue has vascularity?






17. What type of tissue is enamel?






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






19. What processes are involved with the apposition stage?






20. What are entrapped cementoblasts called?






21. What do the odontoblasts do?






22. What is another name for the dental sac?






23. What are the clinical ramifications of concrescence?






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






25. What kind of cells occur in the outer enamel epithelium in the bell stage?






26. What are the incremental lines for cementum and alveolar bone?






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






28. Active eruption






29. What does the cervical loop consist of?






30. Where is the dental sac originally derived from?






31. The stratum intermediate is located inner or outer?






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






33. Which teeth are nonsuccedaneous?






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






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






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






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






38. Where is the enamel matrix secreted from by the ameloblasts?

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






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






41. What are the mature cells for dentin?






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






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






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






45. What are the mature cells for alveolar bone?






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






47. The stellate reticulum is located inner or outer?






48. What is the time span for the cap stage?






49. What is the cementum matrix called?






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