1. what does adult dentition consist of
    32 teeth set in the alveolar processes of the maxilla and mandible
  2. central incisors
    front teeth, chisel
  3. lateral incisors
    shaped, biting
  4. canines
    more pointed, tearing
  5. 1st bicuspid
  6. 2nd bicuspid, 1st molar, 2nd molar, 3rd molar
    • used for gringind
    • 3rd m is wisdom
  7. deciduous
    • temporary, primary or mild teeth
    • 20 teeth
    •  1. central incisor
    •  2. lateral incisor
    •  3. canine
    •  4. 1st molar
    •  5. 2nd molar
  8. nonbiological function of teeth
    • 1. dental structure contributes to the appearance of the entire face
    • 2. jaws and teeth comprise 2/3 of the face and the important determinants of facial structure
    • 3. play a role in speech
  9. 3 main parts of the tooth structure
    • 1. crown-the part of the tooth that is visible 1/3 of the tooth
    • 2. neck-region of transition between the crown and the root
    • 3. root-the part embedded in the alveolar process of the jaw 2/3 of tooth
  10. cementum
    • on the root holds the tooth firmly in its socket
    • the rest of the tooth is comprised of...
    •     dentin and enamel which is the hardest substance in the body
    •     enamel cover the exposed portion of the brown as far as the root
    •     one function of enamel is to resist abrasion
    •     enamel is thickest on the crown and gets thinner toward the neck
  11. deciduous and permanent teeth
    • develop during the embryonic or fetal life
    • deciduous at 6 weeks and permanent at 4 months of gestation
    • calcification of deciduous teeth takes place partly during intrauterine life and partly after birth
    • permanent teeth calcify during infancy and childhood
    •     the calcium for deciduous teeth may be derived in part by its withdrawl from mother's bones (NOT HER TEETH)
    • after birth, the childs' diet should be righ in calcium, phosphorus and vit d
    • after tooth development, the level of calcium in the diet does not affect tooth decay
  12. what is the most common ailment of teeth
    tooth decay and a high carb diet more than anything else favors bacteria growth and causes decay
  13. life cycle of a tooth
    4 periods

    • GROWTH
  14. life cycle of a tooth
    beginning formation of the tooth bud-specialization and arrangement of cells to outline the future tooth. also the deposition of dentin and enamel
  15. life cycle of a tooth
    hardening of the enamel and dentin matrix by deposition or inorganic salts-largely calcium
  16. life cycle of a tooth
    • movement into the oral cavity. there is variation in the time of eruption of teeth.  the time of tooth eruption is dependent in part on endocrine and nutritional conditions. wisdom teeth are often delayed by impaction and my not erupt until 25 years of age or not at all
    •     deciduous teeth erupt between 6-24 months
    •     children lose them from 5-12 years of age
    •     permanent teeth erupt between 7-25 years of age
  17. life cycle of a tooth
    the wearing away of enamel on contact surface of the tooth, once a tooth erupts, it is immediately subjected to wear
  18. what influence does condition, size or texture have on speech
    little but good indicator of...

    • 1. nutrition
    • 2. oral hygiene
    • 3. dental care

    • HOWEVER...
    • the presence or absence of teeth and subsequent effects of dental arches may influence speech. if seen may be blamed for speech problems
  19. in a normal skull, the ____________ has a slightly larger diameter than the __________.
    • maxillary arch, mandibular arch
    • normal relationship between the upper and lower teeht leads to a maxillary overbite
  20. occlusion
    • refers to the full meeting of the masticating surfaces of the upper and lower teeth
    • term also includes:
    •     the alignment of the teeth in the opposing dental arches
    •     the relationship of the upper and lower arches to each other as well as the positioning of the indiv teeth
  21. what might a abnormal occlusion result from
    an abnormal positioning of the jaws or from an abnormality in the position of the teeth
  22. angle's classification
    refers to the relationship of the upper to the lower jaw.  it is not intended to describe the relationship of the upper and lower teeth
  23. neutroclusion
    • class 1
    • the basic arch relationship is normal but you may see anomailies of indiv tooth position (jumble, rotation, etc)
  24. distoclusion
    • class II overbite
    • the lower jaw is too far back in relation to the upper arch
    • the mandibular teeth are posterior to their normal position with respect to the maxillary teeth and the rest of the skull
    • if severe enough it could affect production of bilabials and sibilants
  25. mesioclusion
    • class III underbite
    • the lower jaw is too far forward in relation to the upper dental arch and the rest of the skull
  26. medial/mesial surface
    surface of indiv tooth closest to midline point on arch
  27. distal
    surface of indiv tooth farthest from midline point on arch between central incisors
  28. buccal
    surface of a tooth that could come in contact with the buccal wall
  29. lingual surfaces
    surface of a tooth that could come in contact with the tongue
  30. occlusal surface
    the contact surface between teeth of the upper and lower arches
  31. intraosseous eruption development
    eruption of teeth through the alveolar process
  32. clinical eruption development
    eruption of teeth into the oral cavity
  33. successional teeth development
    teeth that replace deciduous teeth
  34. superadded teeth development
    teeth in the adult arch not present within the deciduous arch
  35. supernumerary, development
    teeth in excess of the normal number for an arch
  36. dental occlusion
    normal projection of upper incisors beyond lower incisors in the transverse plane
  37. dental occlusion
    normal overlap of upper incisors relative to lower incisors
  38. dental occlusion
    class i occlusal relationship
    relationship between upper and lower teeth in which the first molar of the mandibular arch is one-half tooth advanced of the maxillary molar
  39. dental occlusion
    class i malocclusion
    occlusal relationship in which there is normal orientation of the molars, but an abnormal orientation of the incisors
  40. dental occlusion
    class ii malocclusion
    relationship of upper and lower arches in which the first mandibular molars are retracted at least one tooth from the maxillary molars
  41. dental occlusion
    class iii malocclusion
    relationship of upper and lower arches in which the first mandibular molar is advanced more than one tooth beyond the first maxillary molar
  42. dental occlusion
    relative micrognathia
    condition in which the mandible is small in relation to the maxillae
  43. axial orientation
    condition in which indiv tooth is rotated or twisted on its long axis
  44. axial orientation
    condition where indiv tooth tilts toward the lips
  45. axial orientation
    condition where indiv tooth tilts to tongue
  46. axial orientation
    condition where indiv tooth tilts to cheek
  47. axial orientation
    condition where indiv tooth tilts away from midline of the dental arch
  48. axial orientation
    condition where indiv tooth tilts to the midline of dental arch
  49. axial orientation
    condition where tooth is inadequately erupted
  50. axial orientation
    condition where tooth protrudes excessively into the oral cavity, causing inadequate occlusion of other dentition
  51. axial orientation
    persistent open bite
    condition where front teeth do not occlude because of excessive eruption of posterior teeth
  52. axial orientation
    persistent closed bite
    condition where the posterior teeth do not occlude because of excessive eruption of anterior dentition
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