morphology1

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Author:
emm64
ID:
104838
Filename:
morphology1
Updated:
2011-09-28 00:49:43
Tags:
dental morphology
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Description:
dental morphology lecture 1
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  1. ISO
    • Binomial system
    • First number identifies the quadrant and dentition:
    • 1 � Permanent maxillary right 5 � Primary maxillary right
    • 2 � Permanent maxillary left 6 � Primary maxillary left
    • 3 � Permanent mandibular left 7 � Primary mandibular left
    • 4 � Permanent mandibular right 8 � Primary mandibular right
    • Second number identifies specific tooth in quadrant (1-8 permanent) and 1-5 primary
  2. Height of contour
    • location of greatest curvature on each tooth surface
  3. Line angle
    • junction between adjacent surfaces on the same tooth
  4. Proximal contact
    area where adjacent teeth contact each other
  5. Embrasure
    • v-shaped space around proximal contacts between two teeth
  6. Anterior Teeth Features
    • Incisal edge or one cusp
    • Cingulum and lingual fossa(e)
    • Marginal ridges parallel long axis
    • Facial and lingual heights of contour in cervical third
  7. Incisor Functions
    • Mastication:�incising� or biting, holding
    • Phonetics: forming certain sounds
    • Esthetics: most visible when smiling
  8. Incisor Features
    • Incisal edge
    • Single root
    • Cingulum and lingual fossa
    • Marginal ridges parallel to long axis
    • Wider mesiodistally than faciolingually
    • Facial and lingual heights of contour in cervical third
    • CEJ curvature greater on mesial than distal surface
  9. Incisors: Relative Sizes
    • From largest to smallest:
    • Maxillary central
    • Maxillary lateral
    • Mandibular lateral
    • Mandibular central
  10. Maxillary Central Incisor
    • Mesioincisal angle is very sharp
    • Distoincisal angle slightly more rounded
    • Incisocervical and mesiodistal dimensions are most nearly equal
    • Prominent cingulum
  11. Maxillary Lateral Incisor
    • More convex labial surface
    • More rounded incisal angles
    • Longer root relative to crown length
  12. Mandibular Central Incisor
    • Smallest permanent tooth
    • Smooth lingual surface
    • Most symmetrical incisor
    • Mesio- and distoincisal angles both sharp
    • Curvature of CEJ is greater on mesial than on distal
  13. Mandibular Lateral Incisor
    • Larger than central
    • Mesioincisal angle sharper than distal
    • Crown twisted on root base
  14. thirds
  15. CEJ
    • Pattern of Cementoenamel Junction (CEJ) Curvature
  16. tooth surfaces
  17. Palmer Notation
  18. Universal Notation

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