Primary Registration

Question 1

how do you know if you can hand articulate the casts?

Answer 1

if you can put the casts together in occlusion accurately every time, lots of teeth present

Question 2

if you can hand articulate the casts what do you do next?

Answer 2

get casts mounted on an articulator with a wax wafer or nothing, examine occlusion on articulator, look for space to place rest seats, plan for preparation of rest seats if no space available

Question 3

what is the wax wafer used for?

Answer 3

inter-occlusal record

Question 4

when can you not hand articulate the casts?

Answer 4

not many teeth, free ended saddles, large saddle areas

Question 5

if you cant hand articulate casts what do you do next?

Answer 5

need primary record blocks made on the primary casts, record the occlusion using the primary record block, ask technician to mount the primary casts using your registration

Question 6

why do you use primary record blocks?

Answer 6

you cant obviously see how the teeth meet, use to mount the casts accurately, look for space to place rest seats and baseplate, plan for preparation of rest seats if no space available

Question 7

what makes a registration inaccurate?

Answer 7

not enough wax removed in saddle areas, too much interocclusal registration medium

Question 8

what is the result of registration inaccurate?

Answer 8

occlusal vertical dimension increased with no freeway space, casts will not be mounted accurately

Question 9

after you have completed primary registration what do you do before the next visit

Answer 9

design the denture