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Effect of a cordless retraction paste on titanium surface: a topographic, chemical and biocompatibility evaluation.

Authors
  • Cooper, Katherine
  • Bennani, Vincent
  • Tawse-Smith, Andrew
  • Reid, Malcolm
  • Stirling, Claudine
  • Dias, George
Type
Published Article
Journal
Brazilian Oral Research
Publisher
SciELO
Publication Date
Jan 01, 2013
Volume
27
Issue
3
Pages
211–217
Identifiers
DOI: 10.1590/S1806-83242013000300002
PMID: 23739788
Source
Medline
License
Unknown

Abstract

Good exposure of the preparation margins and haemostasis in the sulcular gingiva are necessary for accurate impressions to produce precise restorations. The use of cordless retraction paste material in implant dentistry is a relatively novel application. However, few studies have been conducted on the use of retraction pastes and their possible interaction with implant surfaces. Recent literature has described remnants on titanium implant surfaces and expressed the need for an assessment of the biocompatibility of the exposed surface (Chang et al.). This in vitro study evaluated the effect of a cordless gingival retraction paste on sterile titanium disks. Surface chemistry was determined using energy-dispersive X-ray spectroscopy (EDS), and further investigated using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). After exposure to retraction paste, surface chemistry alterations were identified. A fibroblast cell line (L929) was exposed to the disks and the live/dead viability/cytotoxicity assay was used to determine any effects on the proliferation and health of cells. The disks exposed to the retraction paste showed fewer dead cells compared to the unexposed disks. This was statistically significant.

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