5
area and grind retentive holes
through it so that the denture base
resin will completely encase the
clasps. See illustration:
Note:
At least 1mm of thickness is
necessary on each side of the
tail for the clear clasp to be
properly incorporated.
Complete denture wax-up and tooth
set-up. Repeat steps I through IV
above, and inject case with tissue
shaded Lucitone FRS.
V. FINISHING AND POLISHING
Lucitone FRS resin should be
finished and polished using normal
procedures for acrylics. A sharp
carbide bur can be used for bulk
reduction. Use a bur followed by
coarse pumice for finishing. For a
firmer, resilient flexibility, finish the
Lucitone FRS flexible partial to no
less than 2mm thickness. For the
most flexibility, finish no less than
1.5mm thickness.
VI. REPAIR TECHNIQUES
Voids or defects due to processing
in
non-flexing
areas can be filled
using traditional thermoplastic
repair techniques. The area to be
repaired should be ground out using
a rough cut bur. Mechanical
retention should be cut into the
denture base. Use Lucitone
®
Repair
Material or Fas-Por
™
+ pourable
denture resin to fill the area. Cure in
a pressure pot according to the
manufacturer’s recommended
instructions. Finish repair using
normal acrylic finishing techniques.
If repair of
flexing
areas is required,
or tooth additions or relines are
necessary, the existing case should
be rebased with new Lucitone FRS
dental resin. To rebase the case,
mount the denture on the model,
trimming away all denture base
except the flange areas holding the
teeth. Grind mechanical retention
into these areas so that the newly
injected material will bond securely.
Perform tooth addition (if required)
and eliminate wax as described
above. Heat and inject as stated
above.
Figure 3
SIDE
VIEW
TOP
VIEW
Denture
Cast
Clear
Clasp
Lucitone
®
FRS
®
