Journal of Conservative Dentistry

ORIGINAL ARTICLE
Year
: 2013  |  Volume : 16  |  Issue : 4  |  Page : 356--361

Effects of home bleaching on surface hardness and surface roughness of an experimental nanocomposite


Ab-Ghani Zuryati1, Ooi Qian Qian2, Mohamad Dasmawati1 
1 Prosthodontics Unit, School of Dental Sciences, Health Campus, Universiti Sains Malaysia 16150, Kubang Kerian, Kelantan, Malaysia
2 Klinik Pergigian Hospital, Bukit Mertajam, Pulau Pinang, Malaysia

Correspondence Address:
Ab-Ghani Zuryati
School of Dental Sciences, Health Campus, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan
Malaysia

Objective: Home bleaching agents may not be safe for composite resins. The purpose of this study was to evaluate the effects of 10 and 20% Opalescence ® PF home bleaching agents on the surface roughness and hardness of universal nanocomposite (Filtek Z350), anterior nanocomposite (KeLFiL), and nanohybrid composite (TPH 3). Materials and Methods: Fifty-four composite resin samples with 18 samples for each type of composite resin were prepared using acrylic molds (4 × 2 mm). Each type of composite resin was further divided into three groups [n = 6 controls were placed in distilled water for 14 days and the other two groups of n = 6 were bleached with 10 and 20% carbamide peroxide (CP), respectively for 14 days]. Surface hardness of the composite resin was tested with a Vickers hardness tester, whereas surface roughness was tested with atomic force microscopy (AFM). Results: There were significant changes in the surface hardness of KeLFiL and TPH 3. However, all the tested materials showed no significant changes in the surface roughness. Conclusion: After 14 days of home bleaching treatment, there was no adverse effect on the surface roughness of all three composite resins, although the surface hardness for KeLFiL and TPH 3 were significantly reduced.


How to cite this article:
Zuryati AG, Qian OQ, Dasmawati M. Effects of home bleaching on surface hardness and surface roughness of an experimental nanocomposite.J Conserv Dent 2013;16:356-361


How to cite this URL:
Zuryati AG, Qian OQ, Dasmawati M. Effects of home bleaching on surface hardness and surface roughness of an experimental nanocomposite. J Conserv Dent [serial online] 2013 [cited 2020 Oct 20 ];16:356-361
Available from: https://www.jcd.org.in/article.asp?issn=0972-0707;year=2013;volume=16;issue=4;spage=356;epage=361;aulast=Zuryati;type=0