Basic Science Research
Influence of different finishing and polishing techniques on the surface roughness of nanofilled composite resin and adhesion of Streptococcus mutans
Ke Ma, Yan Gao, Zhongchun Tong, Xiaoqiong Jiang, Dongjia Lin
Published 2016-02-01
Cite as Chin J Stomatol Res(Electronic Edition), 2016, 10(1): 17-21. DOI: 10.3877/cma.j.issn.1674-1366.2016.01.004
Abstract
ObjectiveTo investigate the effect of five different polishing systems on the surface roughness of nanofilled composite resin and adhesion of Streptococcus mutans.
MethodsThe nanofilled composite resin were selected for this study named Filtek Z350 XT, fifty four specimens were prepared and divided into 6 groups randomly. Five polishing groups specimens were subjected to five different polishing system (OptiDisc, HiLusterPlus, Sof-Lex, Super-snap, Composite Polishing Kit CA0310) treatment, whereas one group received no further surface treatment. Average surface roughness (Ra) were assessed using confocal laser scanning microscope (CLSM) . Then Streptococcus mutans adhered to the 6 groups specimens were cultured in vitro, and the bacterial adhesion amount was measured. ANOVA was used to assess the surface roughness of specimens and the bacterial adhesion amount.
ResultsIn the five polishing group, the lowest Ra value was obtained in the HiLusterPlus group, except it had lower value than Composite Polishing Kit CA0310 (P= 0.016) , there was no significant difference between the other groups, showing the low surface roughness all. There was no significant difference in bacterial adhesion amount between the five polishing groups, which was lower than that of the non-polishing group (P<0.05) .
ConclusionsThe smoothest surface was obtained by Filtek Z350 XT with the use of the polishing system of HiLusterPlus. After polishing systems treatment the amount of the bacteria adhered to nanofilled composites resin decreased significantly.
Key words:
Nanofilled composites resin; Polishing; Average surface roughness; Streptococcus mutans; Bacterial adhesion
Contributor Information
Ke Ma
Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
Yan Gao
Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
Zhongchun Tong
Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
Xiaoqiong Jiang
Stomatology Health Care Center, Shenzhen Maternity and Child Healthcare Hospital, The Affiliated Hospital of Southern Medical University, Shenzhen 518048, China
Dongjia Lin
Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China