Importance of Articulator Mounting
Easy to link 1 and 2 together, as they don’t move.
link 3 to 2 later on. Simplistic, but helps.
Frankfort horizontal plane
Line that
defines the horizontal plane of the skull (i.e., 0o) so that other measures can be made more accurately.
Forion
upper ear and (lower rim of orbit (orbital) (for frankfort horizontal plane)
Ala-Tragus plane (Camper’s Plane)

Aesthetic line - get teeth
horizontal to this plane.
This is based on soft tissue, not
bone or anthropology.
Arcon articulator question
Famous exam question - made up term from articlating condyle. In essence,
condyle in articulator matches human anatomy. If you were to unlock your machine,
you find that they match.
Non-arcon articulators
Condyle part of maxillary - in essence, articulator in reverse. Same function.
Bennett’s side shift
As it moves/rotates, it looks like it shifts sideways.
Mandibular lateral translation/Bennett’s side shift
forward, downward, right. This can reflect in cusp heights.
Triangular ridges
convex in all directions
Increased VO vertical overlap
allows longer cusps
Decreased VO
requires shorter cusps
Increased HO requires horizontal overlap
shorter cusps
Decreased HO
allows longer cusps

