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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12074

Title: How much do resin-based dental materials release? A meta-analytical approach
Authors: Van Landuyt, K. L.
Geebelen, B.
De Munck, J.
Snauwaert, J.
Yoshihara, K.
Scheers, Hans
Godderis, Lode
Hoet, P.
Van Meerbeek, B.
Issue Date: 2011
Citation: DENTAL MATERIALS, 27(8). p. 723-747
Abstract: Objectives. Resin-based dental materials are not inert in the oral environment, and may release components, initially due to incomplete polymerization, and later due to degradation. Since there are concerns regarding potential toxicity, more precise knowledge of the actual quantity of released eluates is necessary. However, due to a great variety in analytical methodology employed in different studies and in the presentation of the results, it is still unclear to which quantities of components a patient may be exposed. The objective of this meta-analytical study was to review the literature on the short-and long-term release of components from resin-based dental materials, and to determine how much (order of magnitude) of those components may leach out in the oral cavity. Methods. Out of an initial set of 71 studies, 22 were included. In spite of the large statistical incertitude due to the great variety in methodology and lack of complete information (detection limits were seldom mentioned), a meta-analytical mean for the evaluated eluates was calculated. To relate the amount of potentially released material components with the size of restorations, the mean size of standard composite restorations was estimated using a 3D graphical program. Results. While the release of monomers was analyzed in many studies, that of additives, such as initiators, inhibitors and stabilizers, was seldom investigated. Significantly more components were found to be released in organic than in water-based media. Resin-based dental materials might account for the total burden of orally ingested bisphenol A, but they may release even higher amounts of monomers, such as HEMA, TEGDMA, BisGMA and UDMA. Compared to these monomers, similar or even higher amounts of additives may elute, even though composites generally only contain very small amounts of additives. A positive correlation was found between the total quantity of released eluates and the volume of extraction solution. Significance. There is a clear need for more accurate and standardized analytical research to determine the long-term release from resin-based materials. Several guidelines for standardization are proposed. (C) 2011 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
Notes: [Van Landuyt, KL; De Munck, J; Yoshihara, K; Van Meerbeek, B] Catholic Univ Louvain, Dept Conservat Dent, Sch Dent Oral Pathol & Maxillofacial Surg, Leuven BIOMAT Res Cluster, B-3000 Louvain, Belgium [Nawrot, T] Hasselt Univ, Ctr Environm Sci, Diepenbeek, Belgium [Geebelen, B] Catholic Univ Louvain, Fac Sci & Engn, B-3001 Heverlee, Belgium [Snauwaert, J] Catholic Univ Louvain, Dept Chem, B-3001 Heverlee, Belgium [Godderis, L] Idewe, External Serv Prevent & Protect Work, B-3001 Heverlee, Belgium
URI: http://hdl.handle.net/1942/12074
DOI: 10.1016/j.dental.2011.05.001
ISI #: 000292037200003
ISSN: 0109-5641
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

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