D How to Process a Denture Using the Palajet System
Reprinted from LMT 's June/July 2011 issue
How to Process a Denture
Using the Palajet System
By Billy Goddard, AS, CDT
entures processed with the Palajet® injection system from Heraeus Kulzer offer excellent fit, occlusion and
esthetics. Engineered for heat- and auto-cure acrylics, the system offers some distinct advantages. With the
Palajet, a Duoflask and Palapress® vario acrylic, it’s possible to process two premium dentures in one flask,
doubling efficiency while doing the same amount of work as traditional flasking. Because of the unique amen-free
makeup of Palapress vario, the case can be processed in 30 minutes with no residual monomer. Palapress vario is dense,
plaque resistant, color stable and has no peroxide that can burn a patient’s tissue, giving you the speed of cold-cure
acrylic without its drawbacks.
step 3 Invest both arches in
the lower half of the flask, bringing the plaster to the edge of
the wax; allow plaster to set.
Step 1 This wax try-in has
been approved by the patient
and doctor and the dentures are
ready for processing.
step 2 Apply a thin layer of
Vaseline to the top and bottom
half of the DuoFlask and on the
stone models. Place both arches
in the lower half of the flask and
check for clearance.
step 4 After the plaster has
fully set, sprue both arches for
injection. Place a main feeder
sprue from the injection hole to
both arches and a main connector on the opposite side of the
flask. Run a small vent sprue that
connects to both arches and
exits the flask through the vent
hole. Next, apply a separator
to the stone to allow for investing of the top half of the flask.
I use HiSep from Hi-Tec Dental
Products because it’s efficient
and creates a perfect separation
between stone-to-stone areas. I
pour the HiSep onto the plaster
stone areas and blow the excess
step 5 Secure the top half
of the flask by tightening the
flask bolts; it’s now ready to be
invested. I use FloFlask, a stone
blend from Hi-Tec Dental Products that has the strength of
flasking stone combined with
the working properties of flow
stone; it picks up minute details
very accurately. Mix and pour
(vibration optional) the FloFlask
to the top of the flask.
step 6 Let the FloFlask set for
20 minutes and then place the
flask in the boilout tank.
step 7 After 10 minutes in the
boilout tank, open the flask and
clean any remaining wax from
the flask. Place the diatorics and
post dam. Clean the flask one
more time and then apply the
separating agent; I use Aislar®
from Heraeus Kulzer.
step 8 I use a dry cotton swab
to remove the excess separator
from the exposed teeth. Then I
clean the teeth again with a cotton swab dipped in monomer,
which removes any remaining
step 9 Using Heraeus Kulzer’s
measuring device, measure the
exact ratio of polymer to monomer for the case. The device
has two vials: the larger one on
the left is for polymer and the
smaller, right vial is for monomer. If processing one arch, pour
the polymer and monomer up
to the first line; if processing two
arches, pour to the second line.
(Tip: Notice that the polymer
vial is filled with roughly 75%
pink and 25% clear polymer.
When processed, the acrylic
remains pink, creating a chameleon effect to blend in with each
individual patient’s oral environment.
step 10 Mix the polymer and
monomer and transfer the mixed
acrylic to the injection vial.
For more information on the Palajet
System, call Heraeus at 800-431-1785
or email [email protected]
heraeus.com. For information on
HiSep or FloFlask, call Hi-Tec Dental Products at 800-859-2006.
step 11 While waiting for
the acrylic to reach the proper
injection state, apply two coats
of Heraeus Palabond® to the
necks of the teeth to create
a bond to the denture base.
Palabond is a preconditioning material that creates a
superior bond between acrylic
teeth and the denture base,
and it’s an excellent choice for
repairing any acrylic product.
step 14 Place the flask into the
step 17 Using the Renfert plaster chisel, remove
the remaining FloFlask stone
from around the acrylic.
Palamat Elite® pneumatic curing unit and cure for 20 minutes.
The Palamet Elite comes preprogrammed with four curing
temperatures and a built-in
automatic pressure release timer.
step 18 Use a stone wheel to
remove the excess sprue acrylic.
step 12 Secure the flask
and the injection cylinder
into the Palajet system.
step 15 Open the flask and
gently tap both sides of the
stone through the open holes in
the flask. Once the stone shell is
free, use a Renfert plaster chisel
to remove the stone from the
models (lower half of flask).
step 16 The sprues are ex-
step 13 Turn the unit on to
initiate the piston that forces the
acrylic into the flask with 60 psi
of pressure. Hold for 10 minutes
and then flip the piston switch
off to release the pressure and
enable the flask to be removed.
posed so use a fiber cut disk
to separate the sprues as
close to the models as possible. After all the sprues have
been separated from the denture base, finish separating
the two sides of the flask.
ABOUT THE AUTHOR
Billy Goddard, AS, CDT, is
COO of East Tennessee Dental Restorations in Kingsport, TN, a full
service laboratory founded by his
father in 1984. He is trained in both
fixed and removable and has trained
chairside with prosthodontists and
general dentists. Goddard also volunteers with the Virginia Dental
Association’s Missions of Mercy.
step 20 Use a chisel to remove the denture bases from
the stone models. Place the
dentures into a glass container
filled with Patterson’s Plaster
& Stone Remover and set the
jar in an ultrasonic cleaner for
approximately 10 minutes.
step 19 Remount the
denture arches and verify
the final occlusion.
step 21 After being pumiced and polished, the finished
dentures are ready for delivery.
Denture Innovation – Evolved.
The Palajet Advantage
The Palajet, a pneumatic injection unit for the fabrication of full
dentures, is adapted especially to suit the material properties of
Palapress vario and Palaimpact. Extremely easy to use, the dosing
system avoids errors, resulting in consistent processing properties.
• Easy to use and requires minimal working space
• Save up to 30% in processing time using the Palajet duoflask
• Eliminates open bites due to lack of occlusal elevation
• One unit to process both heat and cold cure acrylics
Ask your sales specialist how you can receive a FREE Palajet!
Palajet® is a registered trademark of Heraeus Kulzer GmbH.
©2011 Heraeus Kulzer, LLC 300 Heraeus Way South Bend, IN 46614 Phone: (800) 431-1785 Fax: (877) 271-5211 www.heraeusdentalusa.com