An in vitro evaluation of the effects of different acidic beverages on the surface hardness of restorative materials

Abstract

The aim of this study was to examine the effects of different acidic beverages on the surface hardness of restorative materials which are frequently used in clinical practices. Materials and Methods: In this study, cola, sour cherry juice, apple juice, energy drink and orange juice were used as acidic beverages while two composite resins (Filtek Silorane, Filtek Z-550), one flowable composite (Filtek Ultimate Flowable), one compomer (Dyract Extra) and one resin modified glass ionomer (Fuji II LC) served as restorative materials to be tested. After measuring the initial surface hardness of the samples with Barcol surface hardness tester, each sample was put into acidic beverage for five seconds after which they were placed in artificial saliva for five seconds. This cycle was repeated ten times daily for one month. The control group was stored in the artificial saliva without any exposure to this cycle. At the end of the one-month-period, surface hardness of the restorative materials were measured again. Statistical analysis used: "Repeated Measures Analysis of Variance" and "Tukey's Multiple Range Test" were used for statistical analysis. Results: The restorative materials were affected by the acidic beverages. The liquids used in the study, except the artificial saliva, had statistically similar effects on the surface hardness values of the materials used (p<0.05). Conclusion: In conclusion, the beverages used in this study affected the surface hardness of the restorative materials investigated differently.

Surface Deterioration of Gic Type Ii Based on Its Expiration Date After Immersion in Carbonated Drink

“…Feng, dkk mengemukakan dalam penelitiannya bahwa GIC dengan perendaman dalam air selama 6 bulan tidak menunjukkan perubahan kekerasan permukaan yang signifikan 14 . Sebaliknya, Cender mengungkapkan terjadinya penurunan kekerasan permukaan pada GIC setelah perendaman menggunakan Cola Cola 15 . Sedangkan dalam penelitian ini, seluruh sampel mengalami penurunan kekerasan yang cukup signifikan setelah perendaman dengan minuman berkarbonasi.…”