July Clinician's Choice Onsert - 14

PRODUCT SPOTLIGHT
INNOVATIVE SOLUTION
Using Affinity Crystal and Evanesce
Flow in an Injection Molding Technique
T
Susan Prater-Kudlats
DMD
Dr. Susan Prater-Kudlats
is a general dentist in
Jacksonville, Florida with
a focus on cosmetic and
restorative dentistry,
utilizing the latest digital
technology. She graduated
from the Medical College
of Georgia in 2009 and
continues to further
her education through
advanced training courses.
She is currently attending
the Kois graduate program
and is set to graduate
May 2024. Dr. PraterKudlats
also serves as a
Key Opinion Leader for
Desktop Health, one of the
leading dental 3D printing
manufacturers. Dr. PraterKudlats
enjoys sharing her
life and love of dentistry
via instagram @dr_seuzz.
Her creative social media
presence has led to
speaking engagements on
social media branding for
dentists featured by Cerec
Doctors (CDOCS), as well
as opportunities to promote
the products that she
believes give her the ability
to deliver the best patient
care possible.
FIG. 1
Before photo of a worn/broken lower dentition (#'s 21-27)
before using the injection molding technique.
The first step was to design a 3D digital wax-up model of
the desired outcome. Then a duplicate model was made
with every other tooth eliminated from the initial design.
In this case, the smile designs were outsourced to the
Evident Hub, utilizing Exocad software. The two models
were 3D printed on the Einstein printer by Desktop
Health, using Model Z resin. One model with every tooth
and one with every other tooth.
he injection molding technique is gaining
popularity for dental clinicians due to its
wide array of procedural applications. This
technique involves injecting a low viscosity
resin composite through a transparent silicone index
made from a diagnostic wax-up, aiming to replicate the
mock-up.
Having the capability to quickly and predictably transfer
a mock-up into a patient's mouth using composite resin
allows clinicians to offer their patients alternative
treatment options. This procedure provides an effective
way to restore multiple teeth in the arch as temporary,
transitional and/or permanent restorations. (FIG. 1)
Then the matrices were prepared by making a small
opening, leading from the intaglio surface of the matrices
to the outer surface. The access hole was created using a
composite syringe tip to puncture the intaglio surface of
the matrix and push it through to the outer surface. The
location of the holes are incisal/occlusal to the teeth that
are to be restored. First, the access holes for the duplicate
model were prepared, leading to tooth #'s 21, 23, 25 and
27, as #'s 22, 24 and 26 were deactivated on this model.
The second matrix was of the full wax-up, and vent holes
were created leading to #'s 22, 24 and 26.
Minimal preparations were done on all teeth, which
FIG. 3
Evanesce Flow (Clinician's Choice) was injected through
access holes into the clear matrix.
Minimal preparations were done on all teeth, which
includes removal of decay, 2mm bevel preparations with
a 7901 flame shaped bur (Brasseler) and air abrasion.
PTFE tape was placed on #'s 22, 24 and 26. Etching
and bonding procedures were done on #'s 21, 23, 25 and
27. The first matrix was placed and the Evanesce Flow
Composite (Clinician's Choice) was injected through
the tiny access holes, followed by polymerization of
the composite resin through the clear matrix. (FIG. 3)
After the first set of teeth were restored, finished with
Neodiamond pointed cone bur (ref #3314.10VF) and
polished with ceramic polishing wheels: coarse blue
(FLW14C), medium pink (FLW14M), and fine gray
(FLW14F), the same procedure was done to restore #'s
22, 24 and 26. Finally, the occlusion was adjusted to
achieve bilateral simultaneous equal-intensity contacts.
FIG. 2
Fabrication of the two silicone matrices.
The silicone matrices were fabricated by dispensing
the Affinity Crystal Clear Matrix Impression Material
(Clinician's Choice) into the Clear Impression Trays
(Clinician's Choice) and seating the material on the
respective 3D printed models. (FIG. 2) Once set, the
silicone matrices were removed from the clear trays.
14 SUMMER 2023 | CLINICAL LIFE | clinicianschoice.com
AFTER
Highlights the restored lower dentition after using
the injection molding technique.
http://www.clinicianschoice.com
July Clinician's Choice Onsert

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