CH 21 Tooth Anomalies

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Across
  1. 3. lack of development or defective development of the enamel of the tooth before it's eruption
  2. 6. conical-shaped crown, short root, single or multiple, may erupt
  3. 9. hereditary disease resulting in defective dentin formation; dentin is soft and pulp chambers show obliteration; appear in discolored shades of brown-gray w/ a silvery sheen
  4. 13. enamel covering crowns of the teeth is found to be defective; effects multiple teeth with significant discoloration and pitting; thinner enamel; enamel "flakes off"
  5. 17. large carious lesion destroys the roof of the pulp chamber
  6. 19. extra cusp that emanates from the central groove on the occlusal surface of posterior teeth; affects md teeth more so with bilateral involvement
  7. 20. small sphere of enamel on root surface; attached to cementum or CEJ
  8. 21. extra tooth buds or cleavage of tooth buds
  9. 22. usually bilateral; short roots; familial; a form of microdontia
  10. 23. calcification occurs around nidus and of cells in the pulp chamber
  11. 24. teeth exhibit elongated, large pulp chambers and short roots
  12. 25. enamel organ invaginates into the crown before mineralization
Down
  1. 1. "rootless teeth" ; radicular and coronal dentin dysplasia
  2. 2. Inflamed dental pulp caused by external trauma, caries, invasive dental procedures and extreme temperatures
  3. 4. a decrease in the number of teeth; most common missing teeth are 3rd molars and mx lateral incisors
  4. 5. single tooth germ attempts to divide and produce two teeth; two crowns joined by a notched incisal area; one root, one pulp canal
  5. 7. "ghost teeth" ; very thin enamel and dentin; large pulp chambers
  6. 8. 1-5 teeth do not develop
  7. 10. disturbance in the maturation of the enamel matrix from trauma; localized, chalky white spot or brown lesion
  8. 11. destruction of the tooth structure, initiated on the outside of the tooth, generally the root; initiated by cells that originate in the PDL leading to osteoclastic-like activity
  9. 12. two adjacent teeth united by cementum only
  10. 14. horizontal rows of enamel pitting of crowns of teeth that are forming at that time
  11. 15. destruction of tooth structure within the pulp chamber or root canal
  12. 16. accessory cusp near cingulum of permanent incisor
  13. 18. union of two separate tooth germs caused by hereditary, pressure, or crowding; single large tooth where two teeth should be; roots may be separate or fused; usually primary incisors