Dentaltown December 2019 - 30
show your work
case study
■ Omnichroma
■ Blocker
Fig. 6: The mylar strip was used to contour the composite.
Fig. 5: The mylar pull-through technique ensures that the composite is
taken all the way through the contact area. The area where Omnichroma
Blocker was placed to the lingual is shown.
Next, the lingual surface was adjusted, and the bite was checked.
The facial surface was initially contoured with a flame-tip diamond
bur to achieve a finish close to the final contour. Next, a coarse
disc (Sof-Lex XT, 3M) was used to achieve the primary anatomic
form. Then, blue and pink rubber cups (Cosmedent) were used to
polish the surface. The final high gloss polish was achieved with
Cosmedent's FlexiBuff and Enamelize (Figs. 7-8).5-7
On two subsequent appointments, Teeth #6, 7, 9, 10 and 11
were prepared and restored. Teeth #7, 9 and 10 had a very similar
pattern of deep decay that included large mesial, distal and facial
composite restorations.
Teeth #7 and 10 had some enamel loss on the lingual, so I used
a thin layer of Omnichroma Blocker to help shape the lingual wall
and block out possible interproximal shade-matching interference,
which would allow the composite to "pick up" the color of the
natural enamel better. The mesial and distal areas of teeth #7, 9
and 10 were each filled with one large layer of composite, contoured
and light-cured.
Teeth #6 and 11 were filled in a more conventional manner.
When the lingual is intact, the blocker material is not needed. On
this patient, the surface of the natural teeth displayed slight amounts
of surface opacities. If a dentist wants to blend the composite a
little better, the outer surface of the composite material could be
"scratched" with a diamond bur. Next, the surface is etched, a
bonding agent applied, a small amount of white tint applied and
cured, and a thin layer of composite material applied over the
surface and light-cured. Then the entire restoration can be finished
and polished (Figs. 9-13, p. 32).
30
DECEMBER 2019 // dentaltown.com
Fig. 7: The shade of Omnichroma composite before light-curing.
Fig. 8: Tooth #8 after the restorations have been finished and polished.
Notice the accurate color match and how the composite just blends into
the tooth.
http://www.dentaltown.com
Dentaltown December 2019
Table of Contents for the Digital Edition of Dentaltown December 2019
Dentaltown December 2019 - Intro
Dentaltown December 2019 - Cover1
Dentaltown December 2019 - Cover2
Dentaltown December 2019 - 1
Dentaltown December 2019 - 2
Dentaltown December 2019 - 3
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Dentaltown December 2019 - 5
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Dentaltown December 2019 - Cover3
Dentaltown December 2019 - Cover4
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