DIG - Lec 3, AGEING & TEETH

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Across
  1. 3. the upper _____ quadrant of the jaw (used in numbering teeth) is quadrant 1. (rest are numbered clockwise from here).
  2. 5. in this animal, incisors erupt between age 1 - 4. starting from I1.
  3. 8. this substance surrounds the enamel in a HORSES teeth, due to continuous eruption (in dogs, cats, humans etc is below gingival junction, part of root)
  4. 9. also known as the '____' the infundibulum is present in incisors of HORSES, and is surrounded by a continuous ring of enamel. eventually worn down as teeth age
  5. 11. in HORSE ageing, '_____' refers to the enamel over the surface of the tooth being worn until there is a contnuous ring of dentine between two circular enamel rings.
  6. 13. space between incisors and cheek teeth in ruminants and horses.
  7. 14. __________ in the PIG continuosly erupt, and are used for tearing.
  8. 16. these cell types secrete enamel, and (cell type) are usually worn away when tooth erupts (enamel can't regenerate if damaged)
  9. 18. at age 16-18 a horses incisors become ________ shaped.
  10. 20. at age 9-10 a horses incisors become ______ shaped. at age 10 galvaynes groove can appear.
  11. 22. this groove appears on a horses upper incisor 3 around age 10, and disappears by around age 30.
  12. 23. unlike horses, the incisors of ruminants do not exibit continuous _____________
  13. 26. 'high crowned' teeth
  14. 28. _______________s secrete dentine
  15. 30. a dogs temporary teeth take between 3 and 6 ______ to erupt (premolars slowest, canines fastest)
  16. 33. Rabbit incisors can be clipped. they are insensitve, lacking a ____ _______ (2 words)
  17. 35. age when the dental star appears in horses
  18. 38. the _______ cheek teeth are larger than the rostral cheek teeth in the OX
  19. 40. enamel, dentine and cementum all wear at different _____ causing a convulted enamel ridge to appear in cheek teeth of herbivores.
Down
  1. 1. a DOGS incisors are ___cuspid. but lose their definition with age (particularly bottom ones)
  2. 2. this animal has 30 permanent teeth (reduced no. of grinding teeth)
  3. 3. enamel on the RODENT and RABBIT incisors is present only on the _______ surface. Therefore wear of these teeth creates a sharpened chisel-like appearance.
  4. 4. ______ teeth in the PIG don't erupt continuously, they have rounded cusps and are used for crushing and grinding.
  5. 6. these teeth in DOGS erupt between the ages of 3 and 7 months (canines and molars slowest, incisors fastest)
  6. 7. (two words) a hard fibrous structure that replaces the upper incisors and canines in ruminants
  7. 10. the first upper ________ in a HORSE is called a wolf tooth and is only present in some animals.
  8. 11. in the ageing of an ox, 'level' refers to the wearing of the incisors until the ________ surface becomes smooth and convex (in younger animals there are ridges on the _________ surface that make the worn edge appear zig-zag)
  9. 12. starting from age ___ - nine years of age, the incisors of the OX become 'level' (I1 first, then I2 etc)
  10. 13. PIGS use their lower incisors for _______
  11. 15. name for teeth in DOG that are very rostrally sharp (cutting), and caudally blunt (crushing).
  12. 17. number of roots in a DOGs upper premolar 4, and upper molars 1 and 2.
  13. 19. in DOG teeth, the incisors, canines and first premolars each have ___ root.
  14. 21. HORSE incisors and cheek teeth, PIG canines, and OX cheek teeth (NOT incisors) exhibit __________ eruption.
  15. 24. ________ and rodents don't have canines
  16. 25. just over the age of ____ a DOGS lower incisors are worn, with the upper ones still quite well defined in tricuspid state.
  17. 27. dogs lack temporary _______, as well as a temporary premolar 1.
  18. 29. in this animal, incisors erupt between age 1.5 - 4. starting from I1.
  19. 31. at the age of around 15, the spots of _______ that formed the border of the infundibulum have disappeared.
  20. 32. the _______ year hook in horses may or may not appear on UPPER INCISOR 3 at 7 years
  21. 34. HORSE AGEING: at the age of 2.5, ______ 1 has erupted. at age 3.5 _________ 2 has erupted. at age 4.5 ________ 3 has erupted.
  22. 36. at ___ years, DOGS lower incisors and canines worn significantly, upper incisor 1 worn, and upper incisors and canines losing definition.
  23. 37. the dental ____ appears around the age of EIGHT in HORSES. due to secondary dentine formation.
  24. 39. this animal generally has 42 permanent teeth