Download Impressions - Stern Empire

Impressions
Accu Dent Impression System
Accu-Dent
•Irreversible hydrocolloid (hydrophilic)
•Two viscosities
•Non-slumping
Non slumping
•Premeasured sealed packaging
•Syringe delivery
•Temperature controlled
•Unique tray design
•Single entry impression system
A
Accu-Dent
D t IImpression
i
S t
System
1
For edentulous patients
Accu-Dent
Accu
Dent System 1
Impression System
Accu-Dent
A
D t System
S t
1
Impression System
• System one Accu-gel materials are specially
formulated to make impressions of edentulous
arches dentate arches
• The trays are specifically
f
designed ffor this
purpose
• It features a syringe system that facilitates the
delivery of impression material into the buccal and
labial flange areas
Impressions for the
maxillary
ill
edentulous
d t l
arch
h
S i
Syringe
Gel
G l
Use the “System
y
1” side of
the measuring vial to
proportion the exact
amount of water for the
syringe gel
The syringe gel mixes
quickly and smoothly
Syringe Gel
Remove the plunger
and back load the
syringe
Engage the plunger
and press material into
the syringe tip
Tray Gel
Again use the “System
System 1”
1
side of the vial to measure
the appropriate amount of
water
ater for the tray
tra gel
Tray
y Gel
Note that the tray
yg
gel
appears dry at the start
of mixing. Do not add
water In several
water.
seconds it will develop
into a creamy mix.
Loading the Tray
Rub the surface of the
loaded tray material
with water
Note
N
t the
th ttray material
t i l iis
loaded heaviest in the
anterior section of the tray
L di the
Loading
th Tray
T
Apply
pp y a small amount of
material on the initial
loading of the tray. This
allows the material to be
pressed into the retentive
holes of the tray
After all the retentive
holes have been engaged
add the remaining
material to the tray
Making the Impression
Begin injecting the
material directly into the
hamular notch area on
one side of the arch
Continue injecting
(keeping the tip of the
syringe imbedded into
the material) up to the
labial frenum and stop
Making the Impression
Inject into the hamular
notch of the opposite
side and continue
f
forward
d to
t the
th labial
l bi l
frenum
Making the Impression
Inject some material to
anterior hard palate area
Note how the material
“attaches (hydrophilic)” to
the tissue and does not
“drip
drip (non-slumping)”
(non-slumping)
Taking the Impression
Gently seat the tray in
the patient’s mouth
(do not overseat”
As soon as material
extrudes from the back
of the tray “stop”
seating
Border Molding
Gently hold the lower
border of the upper lip
and pull forward
Have patient slowly
open wide
Border Molding
Gently massage the
right
g and left cheeks of
the patient
Tray Removal
Carefully remove the
impression by breaking the
seall att th
the perpheral
h lb
borders
d
(Do not remove impression
by
y tugging
gg g on the handle of
the tray)
Thoroughly rinse
impression of saliva
Tray Removal
Disinfect
Di
i f t iimpression
i
using materials and
techniques
q
appropriate
pp p
for irreversible
hydrocolloid materials
Support the
impression using the
Accu-dent tray holder
(do not lay impression
on counter)
t )
Final Impression
Note the accuracy of
the peripheral border
registrations
Final Impression
In particular note the
detailed registration of
the hamular notch area
Border molded final maxillary
impression
Impressions for the
mandibular
dib l edentulous
d t l
arch
h
The mandibular Accu
Accu-dent
dent impression is not a
border molded like the maxillary impression
The intent of the mandibular impression is to obtain a
“fully extended impression” to facilitate the identification
of the
o
t ea
anatomical
ato ca landmarks
a d a s tthat
at will gu
guide
de tthe
e out
outline
eo
of
the denture border extensions
Tray Selection (distal rise)
Moderately resorbed
ridges gradually incline
to the ramus
This gradual incline (low
distal rise) is reflected in the
mandibular trays #25-29
Tray Selection (distal rise)
Severely resorbed ridges
have a more abrupt
incline to the ramus
This high distal rise is
reflected in the mandibular
trays #20-24
T
Tray
Selection
S l ti (size)
( i )
The “tray selection tool”
f ilit t the
facilitates
th proper size
i
selection for the mandibular
impression
p
tray
y
Measure approximately where
the first molars are located on
patients existing denture or on
their ridge and select a tray
that lines up to the center of
the retentive holes of the tray
Making the Impression
The syringe gel material is
fi t iinjected
first
j t d first
fi t over th
the
retromolar pad area and
than p
pulled forward up
p to
the midline area
M ki the
Making
th Impression
I
i
The opposite retromolar pad
is covered and the material
is pulled forward to meet the
contra-lateral
contra
lateral side
Insert the loaded tray asking
the patient to place their
tongue between the lingual
flanges of the tray
F ll extended
Fully
t d d mandibular
dib l
impression
p
Fully extended mandibular
impression options
If the anatomy is
accurately identified
and marked this
impression can serve
as the
th final
fi l impression
i
i
Fully extended mandibular
impression options
….or this
impression
p
can
serve as
preliminary
impression for the
fabrication of a
custom impression
tray
Fully extended mandibular
impression options
….or this impression can
serve to fabricate a interim
denture that will be
functionally
y relined several
weeks after delivery