IADR 95th

10/75

-10-Fuji IX GP EXTRA CAPSULE, Fuji IX GP, Fuji VII CAPSULE, Fuji VII1968 Water Susceptibility of Restorative Glass IonomerCement During Early SettingPoster Presentation11:00 AM–12:15 PM Mar 24, 2017 CC, First Floor Authors:Authors:HanaeShiga (Presenter)Iwate Medical UniversityNobuo Okada, Iwate Medical UniversityMasayuki Ito, Iwate Medical UniversityRyosukeYagi, Iwate Medical UniversityAkiko Asano, Iwate Medical UniversityMamoru Noda, Iwate Medical UniversityAbstract: Objectives: We evaluated the water susceptibility during early setting period among some types of glass ionomercement by measuring the infiltration depth of water-soluble dye.Methods: Four types of glass ionomercements, GIC, (FujiIXGP EXTRA CAPSULE; F9-C, FujiIXGP; F9, FujiVIICAPSULE; F7-C, and FujiVII; F7, all from GC, Japan) were tested in the present study. All GICs were mixed according the manufacturer’s instructions and filled into the cylindrical acrylic mold (5.0mm height and 5.0mm diameter). Top surfaces were immediately cylindrical acrylic mold (5.0mm height and 5.0mm diameter). Top surfaces were immediately exposed to water-soluble dye (Caries Detector, Kuraray-Noritake Dental, Japan) after filling the molds. The dye was then removed using by air blowing for 30 sec. The GIC specimens were taken out of the molds after 3 min and split by pressing. The cross-sectional surface was observed with (1) an SEM (X200) for morphologic difference and (2) a stereoscopic microscope (X20) to measure the infiltration depth of dye. The data were statically analyzed by One-way ANOVA with Welch correction and Games-Howell test at P<0.05.Results: (1) For F9 and F7, a lot of spherical voids were existed comparing to F9-C and F7-C. (2) The infiltration depths were 81.6±13.0µm for F9-C, 106.1±25.2µm for F9, 90.7±6.6µm for F7-C, The infiltration depths were 81.6±13.0µm for F9-C, 106.1±25.2µm for F9, 90.7±6.6µm for F7-C, and 104.5±13.3µm for F7. There were significant differences between the capsule type (F9-C, F7-C) or not (F9, F7).Conclusions: The results in the present study suggested that water susceptibility of glass ionomercements during early setting was above 80µm and the depth seemed to be affected by mixing methods, P/L ratio, and/or voids in the cements.Disclosure 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 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.Signed by HanaeShigaReprinted with permission from the Journal of Dental Research, J Dent Res 96 (Spec Iss A):-10-abstract number 1968, https://iadr2017.zerista.com/event/member/336372, 2017