Abstract
The purpose of this study was to evaluate the performance of a resin-modified glass ionomer cement (RMGIC) to which bacterial cellulose nanocrystals (BCNs) were added. BCNs were incorporated into the RMGIC powder in ratios of 0.3%, 0.5%, and 1% (w/w). One control and three experimental groups were enrolled in the study: unmodified RMGIC (control), 0.3% (w/w) BCN-modified RMGIC, 0.5% (w/w) BCN-modified RMGIC, and 1% (w/w) BCN-modified RMGIC. The surface hardness and surface roughness were the parameters assessed. The materials were characterized by scanning electron microscopy (SEM). The data were analyzed using the one-way ANOVA and Kruskal–Wallis tests for surface hardness and roughness, respectively. The addition of BCN resulted in the improvement of surface roughness in all the specimens compared with the control material. The RMGIC modified by 1% (w/w) BCN showed the lowest surface roughness (decreased by 52%) among all tested groups. However, BCN had a negative effect on the surface hardness of RMGIC. The group with 0.3% (w/w) BCN had the least decrease in microhardness (13%). According to the results, the RMGIC group modified by 1% (w/w) BCN had a smoother surface than the other groups. The surface microhardness of the RMGIC decreased after BCNs were added to it.
Highlights
One control and three experimental groups were enrolled in the study: unmodified resin-modified glass ionomer cement (RMGIC), 0.3% (w/w) bacterial cellulose nanocrystals (BCNs)-modified RMGIC, 0.5% (w/w) BCN-modified RMGIC, and 1% (w/w) BCN-modified RMGIC. e surface hardness and surface roughness were the parameters assessed. e materials were characterized by scanning electron microscopy (SEM). e data were analyzed using the one-way analysis of variance (ANOVA) and Kruskal–Wallis tests for surface hardness and roughness, respectively. e addition of BCN resulted in the improvement of surface roughness in all the specimens compared with the control material. e RMGIC modified by 1% (w/w) BCN showed the lowest surface roughness among all tested groups
The RMGIC group modified by 1% (w/w) BCN had a smoother surface than the other groups. e surface microhardness of the RMGIC decreased after BCNs were added to it
No previous study has investigated the microhardness and surface roughness values of RMGICs modified with BCNs. erefore, the aim of the present study was to analyze the effect of incorporating different proportions of BCNs into RMGIC on their mechanical properties. e null hypothesis of the current in vitro study was that the addition of BCNs to the RMGIC would not affect their surface roughness (SR) and surface hardness (SH)
Summary
E purpose of this study was to evaluate the performance of a resin-modified glass ionomer cement (RMGIC) to which bacterial cellulose nanocrystals (BCNs) were added. E addition of BCN resulted in the improvement of surface roughness in all the specimens compared with the control material.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
