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Erschienen in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie 1/2015

01.01.2015 | Original article

In vitro studies on the cytotoxic potential of surface sealants

verfasst von: Dr. S. Zingler, B. Matthei, A. Kohl, D. Saure, B. Ludwig, K. Diercke, C.J. Lux, R. Erber

Erschienen in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Ausgabe 1/2015

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Abstract

Objective

The objective of this in vitro study was an initial screening of the cytotoxic potential of widely used smooth enamel surface sealants.

Materials and methods

A total of 20 products were allocated to four groups based on their chemical composition: (1) filled resin-based sealants, (2) unfilled resin-based sealants, (3) a resin-modified, glass ionomer-based sealant, and (4) silicone-based sealants. All materials were applied to human enamel slices both in accordance with manufacturers’ instructions and in additional experiments applying 50 % undercuring and 50 % overcuring. An agar overlay assay was then used to test the specimens following ISO 10933. The cytotoxic potential of each material was interpreted based on a reaction index that summarized the decolorization and lysis scores obtained.

Results

The cytotoxic potential decreased as follows: unfilled resin-based sealants > filled resin-based sealants > resin-modified, glass ionomer-based sealant > silicone-based sealants. In 75 % of the resin-based products, deliberate undercuring was associated with more extensive decolorization zones, leading to higher rates of cytotoxic potential in two of those products. Overcuring, by contrast, was associated with a tendency for smaller decolorization zones in 50 % of the resin-based products.

Conclusion

Surface sealants derived from resin monomers exhibited cytotoxic potential in the agar overlay assay. There is also evidence of a possible association with curing, as undercuring can increase the cytotoxic potential, whereas normal curing (as per manufacturers’ instructions) or overcuring may help minimize such effects. More research into the biological implications of these materials is needed, especially with regard to their potential impact on the adjacent gingiva.
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Metadaten
Titel
In vitro studies on the cytotoxic potential of surface sealants
verfasst von
Dr. S. Zingler
B. Matthei
A. Kohl
D. Saure
B. Ludwig
K. Diercke
C.J. Lux
R. Erber
Publikationsdatum
01.01.2015
Verlag
Springer Berlin Heidelberg
Erschienen in
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Ausgabe 1/2015
Print ISSN: 1434-5293
Elektronische ISSN: 1615-6714
DOI
https://doi.org/10.1007/s00056-014-0269-x

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