Ch. 15 overview of the dentition

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  1. what is the correct sequence of words when describing a tooth based on D-A-Q-T system?
    • D- Dentition
    • A- Arch
    • Q- quadrant
    • T- tooth type
  2. What are the Dentitions?
    • Primary
    • Permanent
  3. What are the Arches?
    • maxillary
    • mandibular
  4. What are the Quadrants
    • looking for left or right
    • (already stated maxillary or mandibular)
    • I maxillary right
    • II maxillary left
    • III mandibular left
    • IV mandibular right
  5. What are the tooth types?
    • Permanent Dentition Primary Dentition
    • central incisors
    • lateral incisors
    • canines
    • 1st & 2nd pre molars 1st & 2nd molars
    • 1st, 2nd & 3rd molars
  6. CEJ what does this stand for?
    what meets here?
    what does it look like?
    • cementoenamal junction
    • the enamel of the crown and cementum of the root
    • external line at the neck or cervix of the tooth
  7. there are 3 possible interfaces at the CEJ what are they?
    • cementum over the neck fo each tooth may overlap the enamel
    • the enamel may meet the cementum edge to edge
    • small area of underlying dentin may be exposed because of gap between the enamel and cementum
  8. anatatomical crown is?

    clinical crown is?
    the part covered by enamel (constant)

    part of the anatomical crown that is visible and not covered by the gingiva (can change over time)
  9. there is an accepted sequence of combined names of involved surfaces.
    with mesial and distal which comes first?
    and do these procede all other terms?
    • mesial comes before distal always
    • yes these are always first
  10. mesial or distal comes first then
    what 3 terms come next?
    labial, buccal and lingual follow
  11. after mesial and distal
    labial, buccal and lingual follow they always precede
    what two terms?
    incisal or occlusal in any combination
  12. when labeling the first word always change distal & medial to? labial, buccal & lingual?
    If following a vowel such as on occlusal what do you do?
    • disto, mesio, labio, bucco & liguo
    • hyphenate (mesio-occlusal)(bucco-occlusal)
  13. Dentition Periods
    begins with the eruption of?
    ends when the ?
    this period occurs between?
    full eruption is completed at?
    • primary mandibular central incisors
    • first permanent tooth erupts, usually the permanent mandibular first molar
    • 6 months and 6 years
    • 30 months
  14. Dentition Periods
    begins with the eruption of?
    ends when the?
    this period occurs between?
    • first permanent tooth permanent mandibular first molar
    • last primary tooth is shed at age 11 or 12
    • 6 and 12 years of age
  15. Dentition Periods
    Why are the primary crowns lighter than the darker permanent crowns?
    perm teeth have less opaque enamel, thus the underlying yellow dentin is more visible.
  16. Dentition Periods
    do males or females shed primary teeth faster and why?
    females because the earlier overall physical maturation achieved.
  17. Dentiton Period
    begins with?when?
    includes all what teeth except?
    tooth types erupt in -----?
    • shedding of the last primary tooth. after age 12
    • all permanent teeth except teeth that are congenitally missing or impaced and cannot erupt usually involving the third molars (age 17-21).
    • pairs
  18. Tooth types and fuctions
    biting and cutting
  19. tooth types and functions
    piercing and tearing
  20. tooth types and fuctions
    • assist canines- pierce and tear
    • assist molars- grinding food
  21. tooth types and fuctions
    grinding food
  22. compared with permanent teeth primary teeth have
    • relatively short crown
    • relatively longer roots
    • large pulp horns and chambers
    • thinner dentin
    • whiter enamel
  23. clinical consideration with the primary dentition
    placeholders for?
    increased risk of ----- during restoration.
    • permanent teeth
    • pulpal exposure
  24. clinical considerations with the primary dentition
    ------ progressing caries
    anodontia is?
    • rapidly
    • retained primary teeth
  25. clinical considerations with the primary dentition
    nasmyths membrane is?
    agressive perio is?
    • tissue membrane on perminant teeth (yellow) must be polished off
    • inflam or bone loss with little dental biofilm
  26. Bifurcated teeth
    what is this?
    • most maxillary first premolars are bifurcated, having two root branches in the apical third, with a buccal root and a lingual root.
    • other premolars are single rooted.
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Ch. 15 overview of the dentition
dental anatomy ch 15 bath
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