distal extension cases

1. IMPRESSION PROCEDURE
FOR DISTAL EXTENSION
RPD
DR.Shiva

2. RPD/CPD

3. Distal extension
• Kenndeys class 1&2

6. How many impression do we for distal extension?

7. Mc lean’s physiologic impression

9. Over impression / pick up impression above the custom tray with ZOE impression
Zoe impression
Border moulding
Occlusion rim above the custom tray
Custom tray

10. Hindle modification

12. Over impression / pick up impression by finger pressur above the custom tray with ZOE impression
Zoe impression
Border moulding
Occlusion rim above the custom tray
Custom tray

13. Why refractory cast is needed

15. Functional relining method

17. Functional relining method
Altered cast technique
Final impression made with ZOE
Trim green stick of 1mm in tissue surface to provide space for zoe
Resoftened green stick & boeder moulding is done
Functional impression with green stick
Green stick over frame work
Frame work

18. Fluid wax functional impression

21. Fluid wax functional impression
Altered cast technique
Final impression is made with fluid wax
Softed wax is painted on tray
Relife holes are placed on the tray
Self cure 2mm short above frame work
Frame work over spacer
Spacer adaptation
Marking of tray extension

22. Selective pressure functional technique
Altered cast technique
ZOE impression
Trimming tissue surface to create space for ZOE
Boreder moulding
Custom tray with out spacer
Master cast
Alginate impression

23. Altered cast technique

24. Altered cast technique

25. Altered cast
Cast pouring
Beeding and boxing
Sealing the frame work with sticky wax
Grooves are plased on sectioned cast
Mesiodistal cut
Anterio posterior cut
Trimming of distal extension edentulous area
Master cast

26. Drshivasai