In Vitro Evaluation of the Impact of Erosive/Abrasive Challenge in Glass Ionomer Cements

Cinthia Maria Baggio de Luca Cunha, Letícia Maíra Wambier, Gisele Fernandes Dias, Alessandra Reis, Fabiana Bucholdz Teixeira Alves, Ana Cláudia Rodrigues Chibinski* and Denise Stadler Wambier

Received: September 21, 2017;   Published: October 05, 2017

DOI: 10.26717/BJSTR.2017.01.000414

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Abstract

To evaluate the loss of mass and the surface roughness of glass ionomer cements (GIC) after acid challenge (erosion) and simulated tooth brushing (abrasion). Methods: Ten specimens of each GIC were made: Vidrion R® (VR) (SS White), Maxxion R® (MX) (FGM) Riva Self Cure® (RV) (SDI) and Gold Label Light Cured® (GL) (GC). The mass of the materials was verified before and after the erosion/abrasion challenge. At the same moments, the mean surface roughness was measured in each specimen using a surface profile meter. The erosion was produced immersing the specimens in an acid soft drink and in artificial saliva in 5s cycles alternately for 10 times. After that, they were submitted to simulated tooth brushing (20.000 cycles of brushing). Data were evaluated using ANOVA and Tukey post test. Results: The erosive/abrasive challenge didn’t result in significant loss of mass (p=0.009), but increased the final surface roughness in all GICs (p<0.001). The higher surface roughness was observed for conventional GICs (MX and VR), followed by RMGIC (VR) and the encapsulated GIC (RV). Conclusion: It is concluded that the erosive and abrasive processes increased the surface roughness in GICs and the encapsulated GIC was the less affected by the surface wear factors studied.

Keywords: Beverages; Dental restoration wear; Glass ionomer cement; Tooth brushing; Tooth erosion.

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