Impression making

Question 1

Sequence of procoedures in RPD creation

Answer 1

1) clinical examination and choosing of tray
2) tray modification
3) make primary impression
4) pour diagnsotic cast (LAB)
5) preliminary surveying (LAB)
6) mount diagnostic casts on articulator (LAB)
7) individual tray/s (LAB)
8) mouth preps
9) final impressin
10) pour master cast (LAB)
11) survey master cast

Question 2

classification of trays according to material

Answer 2

metal
plastic

Question 3

classification of trays according to shape and use

Answer 3

box (dentate/partially dentate)
edentulous or curved (completely edentulous)
combination (partially dentate with missing posteriors)

Question 4

retention can be provided by

Answer 4

-rim locks
-perforations
-adhesives

Question 5

materials for modifying stock trays

Answer 5

-modeling compound
-high heat wax/baseplate wax
-putty

Question 6

importance of copying limited structures

Answer 6

these are structures that hinder the extension of dentures; need to be seen

Question 7

length of inidividual (custom) tray

Answer 7

1-2mm short of limiting structures (functional limit)