Journal of Iranian Dental Association
J Iran Dent Assoc
Medical Sciences
http://jida.ir
23
journal23
2383-3041
10.52547/jida
en
jalali
1394
1
1
gregorian
2015
4
1
27
2
online
1
fulltext
en
Comparison of Color Change of Silorane and Methacrylate-Based Composites Due to Bleaching
Restorative Dentistry
Restorative Dentistry
Original
Original
<p dir="ltr"><strong style="text-align: justify;">Background and Aim: </strong><span style="text-align: justify;">Bleaching agents differently affect the color of composite restorations. This study aimed to assess the effect of two different bleaching agents on color change of silorane-based and two types of methacrylate-based composites. </span><strong style="text-align: justify;">Materials and Methods: </strong><span style="text-align: justify;">This in-vitro study was conducted on 18 disc-shaped specimens measuring 10×2mm made of A3 shade of Z250, Z350 and P90 composites. The speci-mens were randomly divided into three groups (n=6). Group one or control samples were stored in distilled water. Groups two and three were subjected to bleaching with 16% and 35% carbamide peroxide (CP) (Kimia, Chemident, Iran). Color parameters of specimens were measured before and after bleaching using the CIE L*a*b* system and a spectrophotometer. Data were analyzed using repeated measures ANOVA and Tukey’s HSD test for multiple comparisons.</span></p>
<p dir="ltr" style="text-align: justify"><strong>Results: </strong>The mean and standard deviation (SD) of total color change (&DeltaE) of Z250 in dis-tilled water, 16% carbamide peroxide and 35% carbamide peroxide was 3.48±1.43, 4.55±1.7 and 4.17±1.9, respectively. These values were 4.33±2.41, 4.94±2.23 and 4.25±1.65 for Z350 and 4.97±2.47, 5.28±1.67 and 3.41±2.26 for P90, respectively.</p>
<p dir="ltr" style="text-align: justify"><strong>Conclusion: </strong>In general, the color change of microhybrid, nanofilled and silorane-based composites following bleaching with different bleaching agents was clinically perceivable.</p>
Bleaching, Silorane-based composite, Color, Methacrylate-based composite
77
84
http://jida.ir/browse.php?a_code=A-10-1-820&slc_lang=en&sid=1
Sedigheh
Hashemi Kamangar
hashemi_s@sina.tums.ac.ir
2300319475328460021410
2300319475328460021410
Yes
Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. International Campus, Tehran, Iran
Kiyana
Kiakojoori
2300319475328460021411
2300319475328460021411
No
Private Dentist
Mansoreh
Mirzaii
2300319475328460021412
2300319475328460021412
No
Associated Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran
Mohammadjavad
Kharazifard
2300319475328460021413
2300319475328460021413
No
Research Member of Dental Research Center Tehran University of Medical Sciences. Tehran, Iran