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https://doi.org/10.15644/asc52/4/3

Dimensional Changes of Glass Ionomers and a Giomer during the Setting Time

Jelena Spajić ; Dom zdravlja, Runjaninova 4, Zagreb, Hrvatska
Katica Prskalo ; Zavod za endodonciju i restaurativnu stomatologiju Stomatološkog fakulteta Sveučilišta u Zagrebu, Gundulićeva 5, Zagreb, Hrvatska
Kristina Šariri ; Institut za fiziku, Bijenička 46, Zagreb
Matej Par ; Zavod za endodonciju i restaurativnu stomatologiju Stomatološkog fakulteta Sveučilišta u Zagrebu, Gundulićeva 5, Zagreb, Hrvatska
Vlatko Pandurić ; Zavod za endodonciju i restaurativnu stomatologiju Stomatološkog fakulteta Sveučilišta u Zagrebu, Gundulićeva 5, Zagreb, Hrvatska
Nazif Demoli ; Institut za fiziku, Bijenička 46, Zagreb, Hrvatska


Puni tekst: hrvatski pdf 432 Kb

str. 298-306

preuzimanja: 440

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Puni tekst: engleski pdf 432 Kb

str. 298-306

preuzimanja: 408

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Sažetak

Objectives: The aim of this study was to evaluate dimensional changes of conventional glass ionomer cements, resin-modified glass-ionomer cement, and a giomer during the setting time using digital laser interferometry. Additionally, the influence of different curing modes (“high”, “soft”, and “low”) of a light-emitting diode (LED) curing unit on dimensional changes was evaluated. Materials and methods: Linear curing shrinkage of conventional glass ionomer cements (CGICs): Fuji IX Extra (F9E), Fuji IX Fast (F9F), Ketac Molar Aplicap (KM), Ketac Molar Quick Aplicap (KMQ), resin-modified glass ionomer cement (RM GIC): Fuji II LC (F2LC) and giomer: Beautifil II (B2) was analyzed. All tested
materials were of shade A3, while all of the GIC were encapsulated. Discoid specimens (n=10, d=10 mm, h=0.85 mm) were prepared for each tested material and each curing mode (for light-curable materials)
according to the manufacturer’s instructions. Light-curable specimens were cured with LED curing unit (Bluephase G2, Ivoclar-Vivadent, and Schaan, Liechtenstein). Dimensional changes during curing were recorded in real-time. The results were analyzed by ANOVA, and Tukey post hoc test was used for multiple comparisons (α < 1%). Results: All tested materials showed an initial setting expansion and a subsequent setting shrinkage. KM and KMQ had significantly lower setting shrinkage
than RM GIC polymerized using any of the three curing modes. B2 showed lower shrinkage compared to F2LC. Conclusions: The extent of curing shrinkage in RM GIC measured in this study can affect longevity of restorations.

Ključne riječi

Glass Ionomer Cements, Dental Curing Lights, Dental Materials, Polymerization, Setting Shrinkage

Hrčak ID:

213463

URI

https://hrcak.srce.hr/213463

Podaci na drugim jezicima: hrvatski

Posjeta: 1.443 *