PENGARUH IN-OFFICE BLEACHING SISTEM AKTIVASI HEAT LIGHT DAN KIMIAWI TERHADAP PERUBAHAN KEKERASAN RESIN KOMPOSIT NANOFIL DAN NANOKERAMIK
In office bleaching is a technique of bleaching treatment which is carried out by a dentist using hydrogen peroxide agents, and can be activated using heat light (thermocatalitic) or chemical system. Patients who need bleaching treatment, sometimes has already had composite resin restoration on thei...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2012
|
| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/99157/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=54680 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Universitas Gadjah Mada |
| Summary: | In office bleaching is a technique of bleaching treatment which is carried out by a
dentist using hydrogen peroxide agents, and can be activated using heat light
(thermocatalitic) or chemical system. Patients who need bleaching treatment, sometimes has
already had composite resin restoration on their teeth. Moreover, composite resin restoration
is also needed to restore caries and cracking teeth before bleaching procedure to prevent
sensitivity during bleaching procedure. Recently, nanofil and nanoceramic composite has
been frequently used for restoring teeth. This in vitro study aimed to investigate the effect of
in office bleaching using heat light and chemical activation system on the microhardness
alteration of nanofil and nanoceramic composite resin.
Twenty samples of composite resin and 38% hydrogen peroxide as bleaching agent
were used in this study. Samples were assigned into 2 groups of 10 each (nanofil and
nanoceramic), then each group was divided into 4 treatment groups and 2 control groups.
Group I, nanofil activated using heat light system, Group II, nanofil activated using chemical
system, Group III, nanoceramic activated using heat light system and Group IV, nanoceramic
activated using chemical system. Control groups were not applied by bleaching agent. The
surface microhardness of each sample was tested before and after performing in office
bleaching using microhardness tester (Vickers Hardness Tester) . Data obtained were the
value of microhardness after in office bleaching subtracted by the value of microhardness
before in office bleaching. Data then analysed using two way ANOVA, followed by LSD
test at 95% level of significance.
The lowest alteration in surface hardness occured in nanofil composite resin
group activated chemical system and the highest alteration occured in nanoceramic
composite resin activated with heat light. The results showed that the type of composite
resin (nanofil and nanoceramic) as well as the bleaching activation system (heat light and
chemical) influence on the alteration of surface microhardness (p<0,05). However, there was
no interaction between type of composite resin and bleaching activation system (p>0.05).
It can be concluded that in office bleaching using heat light and chemical activated
system altered the microhardness of nanofil and nanoceramic composite resin. The greater
microhardness alteration occurred on nanoceramic composite resin activated by heat light
system, whereas the lower microhardness alteration occurred on nanofil composite resin
activated by chemical system. |
|---|