Flowable glass ionomer cement as a liner: improving marginal adaptation of atraumatic restorative treatment restorations

Bonifacio, Clarissa Calil, van Amerongen, W. Evert, Meschini, Tatiana Galindo, Raggio, Daniela Procida ORCID: https://orcid.org/0000-0002-0048-2068 and Bonecker, Marcelo 2010. Flowable glass ionomer cement as a liner: improving marginal adaptation of atraumatic restorative treatment restorations. Journal of Dentistry for Children 77 (1) , pp. 12-16.

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Abstract

Purpose: The present study aims to evaluate the in vitro microleakage of two layers GIC proximal restorations in primary molars. Methods: Forty primary molars received proximal cavity preparations and were randomly divided in two groups. G1 was restored with a regular powder/liquid ratio GIC. G2 firstly received a flowable layer of GIC and secondly a regular GIC layer. After 24h water storage (37°C), the teeth were made impermeable with the exception of the restoration area and 1 mm of their surrounding, immersed in 0.5% methylene blue solution (4h), rinsed and sectioned mesio-distally. One side was polished and analyzed under light microscope. Replicates from the other side were observed under SEM. Microleakege evaluation was carried out by 3 evaluators. Results: The data analysis (Mann-Whitney) showed a significant (P<0.01) better result for G2. Regarding the SEM evaluation, irregularities were observed in the G1 at the tooth/GIC interface. For G2, it was not possible to observe any displacement of the GIC in relation to the tooth structure, which confirmed better adaptation as seen in the microleakage test. Conclusion: the insertion of a flowable GIC layer in proximal cavities before the insertion of a regular GIC layer improves the material adaptation to the tooth.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Dentistry
Publisher:	American Academy of Pediatric Dentistry
ISSN:	1551-8949
Last Modified:	10 Nov 2022 10:55
URI:	https://orca.cardiff.ac.uk/id/eprint/148703

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