Effect Of Surface Coating On Flexure And Roughness Properties Of Glass Ionomers | ||||
| Ain Shams Dental Journal | ||||
| Volume 33, Issue 1, March 2024, Page 87-96 PDF (1.21 MB) | ||||
| Document Type: Original articles | ||||
| DOI: 10.21608/asdj.2023.212937.1178 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Noha Mohamed Abd El-kader Anany1; Aya E Samaha   2; Hanan Abdel Aziz Niazi3
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| 1Operative department, faculty of dentistry,Ain Shams University,Cairo, Egypt | ||||
| 2Operative dentistry , Faculty of dentistry, Ain Shams University, Cairo, Egypt | ||||
| 3Operative Dentistry,Faculty of Dentistry, Ain Shams University,cairo,Egypt | ||||
| Abstract | ||||
| Objectives: This study was conducted to evaluate the effect of different surface coating materials on flexural strength and surface roughness of two different glass ionomer restorative materials. Methods: 80 rectangular bars (12×2×2 mm) of glass ionomer materials; 40 highly viscous glass ionomer (HVGI) and 40 resin modified glass ionomer (RMGI) were prepared for flexure strength (FS) testing and divided into 4 groups (n=20) according to the applied surface coat; Group 0: no coat, Group 1: nano-filled resin coat, Group 3: total etch adhesive and Group 4: petroleum jelly. Another 80 cylindrical disks (6×2 mm) of the same materials were prepared for surface roughness (SR) testing and allocated to the same 4 groups as for FS testing (n=20). Samples were subjected to mechanical tooth brushing and then stored in distilled water at room temperature for either 24 hr or 7 d. For FS testing; a 3-point loading test was performed using a universal testing machine running at a crosshead speed of 0.5 mm/min up to failure. For SR testing; mechanical profilometer was used with a cut-off value of 0.25mm. Statistical analysis was performed using One-Way ANOVA/ Turkey’s HSD post hoc test. Results: The results showed that the nano-filled resin coat exhibited the highest Statistically significant FS values and the lowest statistically significant SR values among all tested groups. Conclusions: Immediate surface coating enhances the flexure and roughness properties of HVGI and RMGI. The light cured nano-filled resin positively influences the FS and the SR of glass ionomers | ||||
| Keywords | ||||
| Glass ionomer; Surface coating; Flexure strength; Surface roughness; Nanofilled resin coat | ||||
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