PENGARUH KARBAMID PEROKSIDA 10% DAN 20% SEBAGAI BAHAN HOME BLEACHING TERHADAP PERUBAHAN KEKASARAN PERMUKAAN RESIN KOMPOSIT NANOFIL DAN GIOMER

Abstract

Home bleaching technique  is one of extracoronal  bleaching techniques,  by applying  tooth whitening  mate­
rial conducted  by a patient  at home  under  dentist  supervision.  The aim of this  research  is to evaluate  the effects
of 10% and 20% carbamide  peroxide  to surface  roughness  of nanoftll composite  resin and giomer. Thirty cylinder­
shaped  specimens  of nanofill  composite  resin and giomer, with 5 mm diameter  and 2 mm thickness  were  divided
into 6 groups,  each group  consisted  of 5 specimens.   Group  IA and  IIA were  control  groups,  consisted  of nanofill
composite  resin and giomer submerged  in artificial  saliva for 14 days. Group IB and liB were treatment  groups,  con­
sisted of nanoftll composite  resin and giomer applied  with 10% carbamide  peroxide  3 hours/day  for 14 days. Group
IC and  lIC were  treatment  groups  consisted  of nanofill  composite  resin and giomer  applied  with  20%  carbamide
peroxide  3 hours/day  for 14 daysr. Surface  roughness  of both nanofill composite  resin and giomer  before and after
treatment  were  measured  using stylus profilometer.
Two-way ANOVA showed  surface  roughness  of nanoftll composite  resin and giomer  caused  by restorative
material  types,  concentration   of carbamide   peroxide,  and  interaction. of restorative   materials  to concentration   of
carbamide  peroxide  (p<0,05).  LSD test showed  significant  difference  between  nanofill  composite  resin groups  and
giomer  after bleaching  process  using  10% and 20% carbamide  peroxide.
It could be concluded  that giomer  applied  with(20%  carbamide  peroxide  had greatest  surface  roughness
value,  and there  was  interaction  between  restorative  materials  with carbamide   peroxide  concentration   to surface
roughness  of nanofill composite  resin and giomer.