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Compend. Oral Sci:vol1(7);2015;47-51

The acid was then washed thoroughly for 60 process and surface treatment. Bonding
seconds and dried completely. Next, silane was strength resulted from silanization to a silica
then applied and left to dry. Place the crowns based dental ceramic is known to be high, pre-
7-8
intra-orally and the fluorosis condition of the dictable and excellent around 25-35 Mpa .
adjacent teeth was then mimicked and matched Silane has been a medium of choice to provide
on the all-ceramic crowns by using a light-cured chemical interaction between the dental ceram-

resin color modifier and opaquing kit ic and resin luting cement. Studies also con-
(Kolor+Plus, Kerr). The resin colour modifiers cluded that surface treatment with hydrofluoric
were applied in very thin layers; bit-by-bit to acid etching does produce greater bond
create the fluorosis characteristics using a fine strength of silica-based dental ceramic to resin 9-
tip brush. Once the characteristics coloring 10 .
completed, the composite resin staining materi-
In both case studies discussed, decision to go
al was light cured for 15 seconds. Then the
for direct staining chair-side procedure was due
crowns were removed from the intraoral envi-
to the severe fluorosis condition of both pa-
ronment and a thin layer of translucent compo-
tients. Although both patients has been advised
site resin (acts as a protective layer) was
on different treatment to reduce the fluorosis
placed covering the whole labial surface of the
condition before fixed prostheses, they refused
characterized crowns. The protective layer is
due to time and financial constraint. However,
light-cured for 30 seconds and the labial surfac-
they both expressed the desire to undergo
es were then polished until smooth and shiny.
more comprehensive whitening regime in the

future. This direct chair-side technique gave us
Fitting procedure
the opportunity to adjust accordingly the dental
Cementations of the crowns were done with
fluorosis features on the crowns to blend with
®
composite resin luting cement (Calibra Esthet-
the rest of the dentition in the future. This will
ic Resin Cement, Dentsply) in a strictly prac-
eliminate the need to fabricate new crown once
ticed moisture control. Patients were happy and
the fluorosis condition has changed.
satisfied with the prosthesis provided to them

(Fig 3A & 3B).
Conclusion

The restorations provided to these two patients
Discussion
comprise the combination of both dental ceram-
Bonding silica-based dental ceramic (lithium-
ic and composite resin materials, thus making
disilicate) to composite resin is common in ce-
the prognosis for aesthetical value remains fa-
mentations procedure and repairing chipped
vourable with a prolonged longevity.
porcelain in fixed prostheses. In this case re-

ports, the addition of direct staining with resin
Acknowledgement
colorant to treated surface ceramics also imply
This project was funded by Research Grant 600
the same concept of bonding to silica-based
-RMI/RAGS 5/3 (126/2012) and Research
dental ceramics.
Grant 600-RMI/RAGS 5/3 (125/2012) from
There are few factors that can increase the Universiti Teknologi MARA.
bonding durability, such as the silanization

50