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Acta stomatologica Croatica : International journal of oral sciences and dental medicine, Vol. 53 No. 1, 2019.

Original scientific paper

https://doi.org/10.15644/asc53/1/4

Effects of Curing Modes on the Microhardness of Resin-Modified Glass Ionomer Cements

Jelena Spajić ; Health Center, Runjaninova 4, Zagreb, Croatia
Matej Par ; Department of Endodontics and Restorative Dental Medicine School of Dental Medicine University of Zagreb, Gundulićeva 5, Zagreb, Croatia
Ognjen Milat ; Institute of Physics, Bijenička 46, Zagreb, Croatia
Nazif Demoli ; Institute of Physics, Bijenička 46, Zagreb, Croatia
Ruža Bjelovučić ; Private Dental Office, Sisak, Croatia
Katica Prskalo ; Department of Endodontics and Restorative Dental Medicine School of Dental Medicine University of Zagreb, Gundulićeva 5, Zagreb, Croatia

Full text: croatian pdf 322 Kb

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Abstract

Objective: This study evaluated the effects of curing modes on surface microhardness of visible lightcured resin-modified glass ionomer cements (VLC RMGIC) and a giomer after different storage periods
in comparison to auto-cured resin-modified glass ionomer cements (AC RMGIC). Materials and Methods: The following materials were used: VLC RMIC: Fuji II LC Improved, Photac Fil Quick Aplicap, AC RMGIC: Fuji Plus, Fuji VIII and Giomer: Beautifil II. The measurements of microhardness were performed using a Vickers test (100 g loads were applied for 10 s) in the following time intervals: immediately after the recommended cure and after 1, 7 and 14 days of immersion in distilled water. Five samples (d=4 mm, h=2 mm) were prepared for each combination of curing mode and tested material. Results: After 14 days, an improvement of microhardness was evident in all tested materials. The full factorial ANOVA identified a highly significant (p<0.001) effect of the factors “material”, “time” and “curing mode (“low”, “soft“, „high”) for the light-cured materials Beautifil II, Fuji II LC and Photac Fil Quick. There was a statistically significant difference in the microhardness between different material types (Beautifil II>Fuji II LC>Photac Fil Quick>Fuji Plus>Fuji VIII) and curing modes (low materials.

Keywords

Dental Materials; Light-Curing of Dental Adhesives; Glass Ionomer Cements; Hardness Tests

Hrčak ID:

218000

URI

https://hrcak.srce.hr/218000

Publication date:

19.3.2019.

Article data in other languages: croatian

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