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Review
. 2017 Dec 2;51(3 Suppl 1):S122-S127.
doi: 10.17096/jiufd.10280. eCollection 2017.

Thermo-cured glass ionomer cements in restorative dentistry

Kristina Gorseta  1 , Domagoj Glavina  1
Affiliations
Review

Thermo-cured glass ionomer cements in restorative dentistry

Kristina Gorseta et al. J Istanb Univ Fac Dent. .

Abstract

Numerous positive properties of glass ionomer cements including biocompatibility, bioactivity, releasing of fluoride and good adhesion to hard dental tissue even under wet conditions and easy of handling are reasons for their wide use in paediatric and restorative dentistry. Their biggest drawbacks are the weaker mechanical properties. An important step forward in improving GIC's features is thermo-curing with the dental polymerization unit during setting of the material. Due to their slow setting characteristics the GIC is vulnerable to early exposure to moisture. After thermo curing, cements retain all the benefits of GIC with developed better mechanical properties, improved marginal adaptation, increased microhardness and shear bond strength. Adding external energy through thermocuring or ultrasound during the setting of conventional GIC is crucial to achieve faster and better initial mechanical properties. Further clinical studies are needed to confirm these findings.

Keywords: Glass ionomer; mechanical properties; thermo-curing; ultrasound.

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Conflict of interest statement

Conflict of interest: None declared.

Figures

Figure 1.
Figure 1.
Class V cavities filled with GIC: A- dye penetration inside the material (standard chemical setting) and B- no dye penetration, homogenous material (thermo-cured for 40s).
Figure 2.
Figure 2.
Scanning electron micrographs of fractured GIC on enamel. Failure occured in the material above ion-exchange layer.
See this image and copyright information in PMC

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