Lecture 1 Terms Flashcards
Anterior Guidance
influence of contacting surfaces of anterior teeth on tooth limiting mandibular movement
Group Function
multiple contact relation btw maxillary and mandibular teeth in lateral movements on working side
Protrusion/ Protrusive Movement
position of mandible anterior to centric relation
Left Lateral excursion
-rotation of left side of condyle and forward, inward, and downward translation of non-working condyle
Right Lateral Excursion
rotation of the right or working side condyle and forward, inward, downward translation of the non-working condyle
Laterotrusion
movement of condyle on working side in the horizontal plane
mediotrusion
movement of non-working condyle medially
Bennett Movement
mandible shifts toward working side (0.75 mm)
Bennett Angle
angle btw anterior and medial movement of non-working condyle and the straight protrusive path
Functional Movement
Chewing, swallowing, talking within confines of movement
Maximal intercuspal position
complete intercuspation of teeth independent of condylar pos. (varies with individual)
Centric occlusion
occlusion of teeth when mandible is in centric relation (may or may not coincide with max. intercuspal position)
Centric position
position of mandible when jaws are in centric relation
Retruded contact
can be more retruded than centric position
guided relation when condyles are most retruded
Postural position
any mandibular relationship during minimal muscle contraction
occlusal vertical dimension
distance btw 2 points (nose, chin) when teeth occlude
rest vertical dimension
distance btw nose and chin when mandible is at rest position
Interocclusal distance
distance btw occluding surface of maxilla and mandible when mandible is at a specific position
Interocclusal rest space
difference btw vertical dimension of rest and vertical dimension while in occlusion
Transverse horizontal axis
how mandible rotates in sagittal plane like a hinge
hinge movement
movement in space characterized by 2 divergent points
translator movement
linear (gliding) motion with no stationary axis of rotation
Border movement
most extreme position a mandible can move (not affected by posture)
Working side
side toward which the mandible moves in lateral excursion