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  1. ´╗┐Excursion or excursive movement
    ** any movement of the mandible out of ICP
  2. Left laterotrusion Mandible diagram
    Image Upload 1
  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
    • Image Upload 2
  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.

    Image Upload 3
  17. maxillary diagram
    mandibular movement is in the direction of the arrow
  18. mandibular diagram
    • mandibular movement is opposite the direction of the arrow
    • Image Upload 4
Card Set
Morphology Final 2
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