DENTURE: Technique exercise
Dr S Gonsalkorale
Types of dentures
Complete dentures/full dentures
Cobolt chromium dentures
History, Exam, Primary impressions
MMR, Face bow
Treatment plan, design, informed
Tooth modification, secondary
MMR, shade selection
Fluoride treatment/ Exam/ Recall
Aim: To obtain an
accurate models of
Adjustable articulators allow the cast of the
maxillary denture to be located accurately in
relation to the mandibular condyles and to a
horizontal plane of reference (frankfurt plane).
The Facebow records this information
clinically and transfers this relationship to an
The mandible moves along an arc of rotation
as it opens and closes. The centre of rotation
is in the condyle. The distance from the
centre of rotation of the arc to the teeth is
relevant in developing the occlusion
– relate the upper cast
to the lower cast in
– Relate the upper
cast to the condyles
in the correct
How do you do this?
If you cannot hand articulate you will
need to use base plates with wax rims.
(The casts are then articulated)
Surveying and denture design
casts are surveyed
before the denture is
Once the design has
special trays are
Based on the
denture design carry
out any tooth
– Rest seat
– lowering of survey
Once the tooth
been carried out a
new impression is
taken using the
The new cast needs to be re-articulated
against the existing lower cast.
If the casts cannot be hand articulated
new baseplates and wax rims will be
Set teeth and wax-up
Once the casts have been re-articulated
the teeth are set on the baseplate.
The wax contours are finalised.
The denture is now ready to
Heat cure acrylic - invest and pack
Cold cure acrylic - construct key
Trim and polish denture carefully to
maintain contours and maintain contact.
Polish with pumice and then with
The denture is now ready to issue…...
McGivney GP, Castleberry DJ. McCracken’s
Removable Partial Prosthodontics. 9th Ed.
Removable partial prosthodontics : a case
oriented manual of treatment. Lechner SK,
MacGregor AR. St. Louis : Wolfe c1994.
CD: ROM : Interactive Prosthodontics.
Learning to design removable partial
dentures. Lechner SK, Thomas GA. The
University of Sydney.