ePrints

Crack closure on rehydration of glass-ionomer materials

Lookup NU author(s): Dr Sharanbir Sidhu

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

Moisture-sensitivity of immature glass-ionomer cements suggests that hydration-induced volumetric expansion might close and potentially heal established cracks. Crack closure in glass-ionomer cements (GICs) was observed following rehydration. Circular cavities were prepared in 15 teeth: 10 were restored with resin-modified GICs (5 with Fuji II LC and 5 with Photac-Fil) and 5 were restored with a conventional GIC (Fuji IX); all were dehydrated for 1 min with air and imaged immediately by confocal microscopy. Crack formation in each was located, after which water was placed on the surface and observed for 15 min via a CCD camera. Dehydration caused cracks with measurable gaps, while rehydration resulted in varying degrees of closure: closure was limited in the conventional GIC, and complete or near complete along part/s of the crack in the resin-modified GICs. In all, closure movement became imperceptible after the first 10 min. Statistical analysis indicated no significant difference between the closure behavior of all materials. However, the resin-modified GICs appeared to show a greater potential for closure of established cracks than the conventional GIC upon rehydration. © Eur J Oral Sci, 2004.

Publication metadata

Author(s): Sidhu SK, Pilecki P, Sherriff M, Watson TF

Publication type: Article

Publication status: Published

Journal: European Journal of Oral Sciences

Year: 2004

Volume: 112

Issue: 5

Pages: 465-469

ISSN (print): 0909-8836

ISSN (electronic): 1600-0722

Publisher: Wiley-Blackwell

URL: http://dx.doi.org/10.1111/j.1600-0722.2004.00155.x

DOI: 10.1111/j.1600-0722.2004.00155.x

PubMed id: 15458508

Altmetrics

Share