August 18, 2016 Flashcards
Diagnostic casts should be mounted in relation to what?
TMJ
Alginate is aka:
irreversible hydrocolloid
What material besides alginate can be used to take impression for diagnostic cast?
PVS based alginate substitute
Facebows record:
A-P and M-L spatial position of max occlusal surfaces relative to the hinge axis
Hinge axis:
transverse opening and closing axis
2 types of facebows (different axes):
Kinematic hinge axis and arbitrary hinge axis
True hinge axis facebow:
Kinematic, use limited to extensive prosth work
When to use arbitrary facebows:
most procedures
Facebows measure:
avg position of the hinge axis
Ant ref pt for fb:
infraorbital foramen, nasion, etc.
What does the Bite-Fork of the Hanau Spring -Bow support?
max cast
How to align the bite registration record using the fb:
line on pole attached to arch should be centered in pts midline
How to trim the bite registration for fb:
leave cusp tips
Why trim the bite reg for fb:
max would not occlude properly
When taking bite reg for fb, is the rod on the pts R or L?
L
Tighten the knobs of fb in this order:
vert, hor, A-P (follow the fb back from the earplugs and tighten in the order that you reach them)
Which of the 3 adjustments to use to elevate the ant ref point:
vertical adjustment
ant reference point should be:
parallel to the orbitale
TF? The max cast is mounted to the man cast.
F. opposite
2 categories of interocclusal registrations:
Centric and eccentric
Centric reg is aka:
static
Eccentric reg is aka:
dynamic
Centric reg includes:
centric relation records and MI records
Eccentric reg includes:
Lateral excursive records and protrusive records
