Evaluation of Two Surface Smoothing Techniques Used on Various Glass Ionomer Cements
Manayer Alsalamah*, Maram Alhenaky, Turki Almayman, Ahmed Alqahtani, Abdullah Alsirhani
Aims: To evaluate surface roughness of different glass ionomer cements using two different methods of smoothening techniques.
Methods and Material: Four different types of Glass Ionomer Cements (Conventional GIC, Resin modified GIC (RMGIC), Silver reinforced GIC and Nanofiller GIC) 15 samples of each material, so total =60. Then sub group has been divided as following: 5 controls, 5 finishing with Soflex and 5 swabs with alcohol. The surface roughness measured by Profilometer machine (Fig.1), all samples have been measured before and after polishing with Sof-lex discs and swabbed with alcohol swab, then Scanning Electro-microscope has been used to measure and exam surface area.
Statistical analysis used: Two-way ANOVA in surface roughness, using spss20. analysis of variance to see the effect of materials and finishing.
Results: All tested GICs showed lower surface roughness values after finishing with soflex disc, which give smoother surface than alcohol swabbed surface. When compared between the materials by using Sof-lex disc, Silver GIC give smooth surface but not significantly different than others. Conventional and RMGICs give smooth surfaces with significantly different. The smoothest surface was the Nanofiller GIC
with significantly different than other materials.
Conclusions: We compared the effectiveness of Sof-Lex disc polishing and alcohol swab treatment to achieve surface smoothing. Use of Sof-Lex discs resulted in smoother surfaces than those of the control group and the alcohol swab group, with fewer cracks and voids observed on SEM, although these results were not significant. Both conventional GIC and nanofiller GIC had higher surface roughness values after alcohol swabbing; use of this method is not recommended.