Morphology2.txt

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Author:
emm64
ID:
122126
Filename:
Morphology2.txt
Updated:
2011-12-09 02:29:48
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Morphology Final
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Morphology Final 2
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  1. ´╗┐Excursion or excursive movement
    ** any movement of the mandible out of ICP
  2. Left laterotrusion Mandible diagram
  3. Protrusion
    • movement anteriorly
    • 1.Guided by: facial surfaces of mandibular incisors contacting lingual surfaces of maxillary incisors
  4. Retrusion
    movement posteriorly
  5. Laterotrusion:
    movement laterally
  6. Working side
    • Latertrusion side
    • side of the mandible moving away from the midline
  7. Mediotrusive side
    • Non-working Side
    • lateral movement towards midline
  8. Interference
    • an overly large ICP or excusive contact that prevents other teeth from contacting
    • i.“high” filing
    • ii.Overly long incisal edge
  9. Wear Facet:
    • worn or shiny area at the site of heavy contact on a restoration or natural tooth
    • i.Natural tooth becomes flat
  10. Canine Guidance
    teeth are guided out of occlusion through contact between opposing canines
  11. Canine-Segment Guidance
    deals with canine and 1st premolars; canines and adjacent teeth guide arches out of occlusion
  12. Group Function
    a group of teeth touching; multiple teeth contact during laterotrusion
  13. Curve of Spee
    • curvature, viewed from the facial, that begins at the canine cusp tips and follows the buccal cusp tips of the premolars and molars posteriorly
    • b.Upward curvature as you go posteriorly
  14. Clinical Applications of Protrusive Guidence
    • Optimal placement of cusps during wax-ups of indirect restorations
    • Occlusal adjustment during placement of a restoration
    • Interpretation of wear facets on a newly placed restoration
    • Evaluation of bruxism(clench/grinding) habits from pattern of tooth wear
  15. Laterotrusive pathways
    • perpendicular to the central fossa line
    • correspond to the lingual grooves of mandibular molars and buccal grooves of maxillary molars
  16. Mediotrusive pathways
    • oblique to the central fossa line
    • correspond to DL groove of maxillary molars and DB groove of the mandibular first molar.
    • parallel “oblique anatomical features” of each molar, including the distobuccal groove of the mandibular molar and the oblique ridge of the maxillary first molar.

  17. maxillary diagram
    mandibular movement is in the direction of the arrow
  18. mandibular diagram
    • mandibular movement is opposite the direction of the arrow

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