border movement Flashcards
border movement
movements in the most extreme position
rotational movement
movement of a body around an axis
horizontal axis of rotation
opening and closing motion of the mandible
opening and closing the mandible
hinge movement
pure rotational movement
terminal hinge axis
where condyle positioned in mandibular fossa
frontal axis of rotation
occurs when the condyle moves anteriorly out of the terminal hinge position. the opposite condyle stays in the terminal hinge position because of the ligaments and musculature of the TMJ
translations happens
with rotation simultaneously
what limits single plane movements
ligaments and articular surfaces of the TMJ
sagittal plane movements
- posterior opening
- anterior opening
- superior contact border
- functional movement
superior contact ports
- centric relation
- maximum intercuspation
- edge to edge contacts
- protrusion
centric relation positon
tooth contacts are found on one or more pairs of posterior teeth; this is the first contact when the mandible closes in terminal hinge closure
movements of the mandible in a horizontal manner
laft lateral
left lateral and protrusion
right lateral
right lateral + protrusion
where does pt start in horizontal border movement
CR
rotating condyle
working side
orbiting condyle
non-working side