2. STEPS OF CONSTRUCTION
1. EXAMINATION
2. PRIMARY IMPRESSION
3. POURING PRIMARY CAST
4. PRIMARY SURVEYING
5. MOUTH PREPARATION
6. FINAL IMPRESSION
7. POURING MASTER CAST
3. 8. SURVEYING THE MASTER CAST
9. DRAW THE DESIGN
10. PREPARING MASTER CAST FOR
DUPLICATION
11. DUPLICATION
12. POURING REFRACTORY CAST
13. DRAWING DESIGN
14. MAKE WAX PATTERN AND SPRUE
4. 15. INVESTING AND CASTING
16. FINISHING AND POLISHING
17. METAL FRAMEWORK TRYIN
18. BITE REGISTRATION
19. ACRYLIC TEETH TRYIN
20. PROCESSING OF ACRYLIC
21. FINISHING AND POLISHING.
5. Surveyor
The Horizontal Base
Vertical Upright Column
Cross Arm with Spindle Housing
The Vertical Spindle With Tool Holder
The Surveyor Table
Tool Holder
9. Waxing the master cast:
1- Blocking-out the
undesirable
undercuts:
A- Paralleled blockout:
Proximal tooth surfaces to be
used as guiding planes
Beneath all minor connectors
Tissue undercuts to be
crossed by rigid connectors
Tissue undercuts to be
crossed by origin of bar clasps
Deep interproximal spaces t
10. B- Shaped blackout Ledges for location of
reciprocal clasp
Ledges for location of
retentive clasp arms
11. C- Arbitrary
blockout (Smoothed
arbitrarily with wax
spatula
All gingival crevices
Gross tissue
undercuts
Labial and buccal
tooth and tissue
undercuts not in-
volved in denture
design
12. 2-Relief
Beneath lingual bar
Areas in which major
connectors will
contact, thin tissue
Beneath framework
extension onto ridge
areas for attachment
of resin bases
3-Tissue Stops
Two small squares of
2 mm, usually an
anterior and
posterior, of relief
wax is removed at the
distal end the
edentulous ridge
13. 4-Formation of internal finishing lines
are carved in the relief wax covering the
edentulous ridge at the metal resin junction. This
line is trimmed with blade held at 900 to the cast
surface in order to produce a sharp junction
having a uniform depth of at least 1mm.
