Journal
BIOMATERIALS
Volume 25, Issue 4, Pages 735-740Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0142-9612(03)00572-6
Keywords
soldering; welding; orthodontic joints; human gingival fibroblasts; SEM
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Relatively little is known about the biocompatibility of the soldered or laser-welded joints of dental appliances. We investigated the reaction of human gingival fibroblasts cultured in vitro in direct contact with samples of soldered and laser-welded joints from orthodontic lingual arches. Contrast phase light microscopy was used to evaluate cell adhesion, morphology and proliferation after 6 and 24h and after 7 and 16 days. Scanning electron microscopy (SEM) was performed at 16 days. Our in vitro findings provide evidence that laser-welded orthodontic appliances have superior fibroblast biocompatibility. (C) 2003 Elsevier Ltd. All rights reserved.
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