primary registration Flashcards
what is the purpose of recording occlusion?
to find the comfortable bite
what can you omit if you can hand articulate the casts?
recording occlusion
primary record block
what does it mean to be hand articulated?
lots of teeth present that occlude
casts can be easily hand-held in the same way every time
mirrors whats in px mouth
what should be done if you can hand articulate the cast?
can get casts mounted on articulator with wax wafer or nothing at all
examine occlusion on articulator
look for space to place rest seats
plan for preparation of rest seats if no space available
what is an inter-occlusal record?
wax wafer
what is a wax wafer?
warm wax px bites on-should see teeth meeting
what characteristic is likely to not hand articulate
free end saddles
what should be done is you cant hand articulate the casts?
- primary record blocks made on primary casts
- record occlusion using primary record block
- ask technician to mount primary casts using your registration
what are primary record blocks?
wax rims in saddle areas
lower may have lingual wire
upper has baseplate
-wax/shellac/PPMA
why is a primary record block used?
you cant see how teeth meet
used to mount casts accurately
look for space to place rest seats and baseplate
plan for prep of rest seats if no space available
what does OVD mean?
occlusal vertical dimension
how do you get OVD?
difference between dots on nose and chin
what is freeway space?
space in between teeth
what do you do if there are no teeth?
prescribe OVD using record block
how do you place record blocks?
cut notches to stick upper and lower record blocks together
place impression material in between
for registration place silicon/wax on top of notches
remove in 1 piece
-record blocks should stick together
