2. Denture
2
A denture is a replacement for missing teeth and
surrounding tissues.
Complete Denture
Partial Denture
A removable partial denture or bridge usually
consists of replacement teeth (Artificial Teeth)
attached to a pink or gum-colored plastic base
(Denture Base), which is connected by metal
framework (CLASPS) that holds the denture in place
in the mouth.
4. The denture development process takes about three to six weeks and several appointments.
Once your dentist or prosthodontist (a dentist who specializes in the restoration and
replacement of teeth) determines what type of appliance is best for you, the general steps
are :
4
Impressions Flasking
Model Preparation De-waxing
Survey Application of
Framework Separating media
Waxing Packing
Setup Curing
Deflasking
Finishing & Polishing
5. Impression
5
These are negative replica of patients hard and soft tissues
of Oral cavity usually taken using alginate (Impression
Material) in a stock/ custom tray.
6. Model Preparation
6
After Impression.
By Cast or Die
materials;
Plasterof Paris
Dental Stone
7. Survey
7
Used to determine
heights of contour with
a common path of
insertion.
A dental surveyor is
Used
8. Frame Work
8
Adaptating, and
positioning of clasp.
Cobalt based
Type IV gold based
alloys
Chromium based
9. Waxing
9
Temporary Base Plate.
Support Artificial Teeth.
Modelling Wax.
10. Setup
10
Placed on Wax Base Plate.
Acrylics
Porcelin
11. Flasking
11
The process of investing the cast and a waxed
denture in a flask to make a sectional mould used to
form the acrylic resin denture base.
Lowerhalf (which contains the cast).
Upper half. Lid
Upper Half
Cover/ Lid.
Lower Half
12. Flasking Procedure
12
Vaselin Application.
Pouring of Plaster.
Insertion of Model.
Cover Model with Plaster except on Tooth & Wax.
Vaselin Application.
Upper Part Attachment.
Fill Upper Part with Plaster Again.
Cover Upper Tray with Lid & allow it to set.
15. Dewaxing
15
Wax
Elimination.
Boiling Water
for 4 to 6
minutes.
Excess Wax can
be washed
away with
boiling water. After
Dewaxing
16. Application of Seperating Media
16
Camel's Hair Brush or Cotton held in
Tweezers.
Apply everywhere on cast except
Artificial Teeth.
Allow to cool to room temperature.
Materials
Cold mould seal
Tin foil
Starch
Vaselin
Cellulose Acetate
17. Packing
17
It is act of pressing a denture base material (Dough
Stage) into a mold within flask.
Rod-like form
In the upper half of the flask .
18. Curing
18
Polymerization of Denture Base material.
Self/Chemical Curing.
Microwave Curing
Heat Curing.
Normal Tap Water.
Heat for 45 min
After 45 min allow it to cool
19. Deflasking
Disassembling of Flask to get Denture.
Finishing & Polishing
Grinding lathe
Polishing lathe with pumice
Brushes and rag wheels suitable for
polishing
Polishing compound
No. 6 or 8 round bur
Carbide acrylic burs
Sand Paper
Muslin buff Wheel
Take care not to generate much heat during polishing to avoid warpage of the acrylic denture
19
base.