PENGARUH LAMA APLIKASI BAHAN BLEACHING HIDROGEN PEROKSIDA 40% TERHADAP KEBOCORAN MIKRO RESTORASI RESIN KOMPOSIT HIBRIDA
Bleaching is a treatment to whiten the teeth. One of bleaching materials is hydrogen peroxide. Hybrid composite resin is a restorative material which commonly used in dentistry due to it�s aesthetic and good strength. Hydrogen peroxide is known to have a negative impa...
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| Main Authors: | , |
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| 格式: | Theses and Dissertations NonPeerReviewed |
| 出版: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| 主題: | |
| 在線閱讀: | https://repository.ugm.ac.id/131659/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=72157 |
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| 總結: | Bleaching is a treatment to whiten the teeth. One of bleaching materials is
hydrogen peroxide. Hybrid composite resin is a restorative material which
commonly used in dentistry due to it�s aesthetic and good strength. Hydrogen
peroxide is known to have a negative impact on the tooth and composite resin
restoration such as proteins denaturation that may cause inorganic structure
alteration of the teeth. There is a residue of hydrogen peroxide which can cause
microleakage of composite resin restorations. The aim of this study was to
determine the effect of time application 40% hydrogen peroxide bleaching
materials towards microleakage of hybrid composite resin restorations.
The object of this research were 34 maxillary premolar which were
prepared with class I cavity on buccal side with 3mm diameter, and 2mm depth.
The cavity were etched (35% Scotchbond phosphoric acid, 3M ESPE) and were
applied with bonding materials (Adper Single Bond 2, 3M ESPE) then filled with
hybrid composite resin (Filtek Z100, 3M ESPE). The object were divided into two
groups. Group 1 was applied with 40% hydrogen peroxide (Opalescense Boost)
for 20 minutes. Group 2 was applied with 40% hydrogen peroxide (Opalescense
Boost) for 60 minutes. Both groups were immersed with artificial saliva (pH 6.8)
and were incubated (37
o
C) for 24 hours. Then, both groups were thermocycled
with 5
o
C and 55
o
C. The object were coated with nail polish and sticky wax, then
immersed in 2% methylene blue solution for 24 hours. The teeth were split from
buccal to palatal and were observed under digital computer microscope with 60
magnification. Furthermore, the data were analyzed with Mann-Whitney U test
(p<0.05).
The result showed that the microleakage which occurred in the group that
was applied to 40% hydrogen peroxide for 60 minutes were greater than the group
that was applied for 20 minutes. Mann-Whitney U test showed a significant
microleakage difference in both groups. In conclusion, the time application of
40% hydrogen peroxide bleaching materials affect on the amount of hybrid
composite resin microleakage. |
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