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-9-Fuji IX GP2603 Wear Resistance Comparison of Glass IonomerMaterialsPoster Presentation3:45 PM–5:00 PM Mar 24, 2017 CC, First FloorAuthors:Authors:Tyler Brady, Tufts University School of Dental MedicineJeffrey Daddona, Tufts University School of Dental MedicineKathryn Dunn, Tufts University School of Dental MedicineDariaAmeri(Presenter)Tufts University School of Dental MedicineRonald Perry, Tufts University School of Dental MedicineAbstract: Objectives: We aim to show that four different Glass Ionomermaterials will vary in their toothbrush wear significantly over time; affecting clinical indications for restorative purposes.Methods: Five samples (n=5) of four different GI materials were tested, totalling20 samples. The disc samples measured approx. 10mm thick with a 10mm diameter. They were submersed in 5 mLof artificial saliva (KH2PO4 +NaN3 +KCl+ CaCl2 + MgCl2) for 1 week. The materials were IonoStar®Plus, VOCO (IS); GC Fuji IX GP®, GC America (F); Ketac™ Molar, 3M ESPE (KM); and IonoStarPlus, VOCO (IS); GC Fuji IX GP, GC America (F); Ketac™ Molar, 3M ESPE (KM); and ChemFil® Rock, Dentsply(CFR). An Oral B®Pro 3000 electric toothbrush was used with 25nm of pressure applied by a universal testing machine (Instron®5566A) to brush each sample for 2 min (~16,000 strokes). After, each sample was measured with an Ironton®electronic calipers in mm it was put through this procedure two times (~32,000 strokes), and the four types of GI were compared to see if there was significant difference of wear between the four sample types.Results: Using an ANOVA one-way data analysis, it was found that CFR had significantly higher wear than IS, but not for the other two materials tested throughout the assay. The results are shown in table 1 below .shown in table 1 below .Conclusions: The findings suggest that there are possible advantages of working with specific GI materials in regard to lifespan when considering mechanical wear durability. The materials that had less mechanical wear over time will likely perform better in temporizing preparations in bruxers, and environments where a stronger material is indicated. Dentists working with GI with greater wear resistance may have greater chance of successful temporization and caries prevention in patients with need of higher strength materials. These results may influence dentists in the selection of which GI they would prefer to use in their clinical practice.Image(s):Image(s):Student PresenterDisclosure Statement:The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONEI have read the IADR policy on licensing.Reprinted with permission from the Journal of Dental Research, J Dent Res 96 (Spec Iss A):-9-I have read the IADR policy on licensing.Signed by DariaAmeriabstract number 2603, https://iadr2017.zerista.com/event/member/336302, 2017