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Confocal Time Lapse Imaging as an Efficient Method for the Cytocompatibility Evaluation of Dental Composites
Published on: November 9, 2014
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[Study on the cytotoxicity induced by ceramic alloys]
1Department of Prosthodontics, Affiliated Dental Hospital, Zunyi Medical College, Zunyi, China. zhangyong0852@126.com
Summary
Golden and cobalt-chromium dental alloys show low cytotoxicity, with golden alloy exhibiting the least DNA damage. These findings suggest good biocompatibility for these materials in dental applications.
Area of Science:
- Biomaterials Science
- Dental Materials
- Toxicology
Context:
- Dental ceramic alloys are widely used in prosthodontics.
- Assessing the biocompatibility of these alloys is crucial for patient safety.
- Nickel-chromium, cobalt-chromium, and golden alloys are common choices with varying compositions.
Purpose:
- To evaluate the cytotoxicity of three distinct dental ceramic alloys.
- To compare the effects of these alloys on fibroblast cell viability and DNA integrity.
Summary:
- Cytotoxicity was assessed using the 4-methyl-thiazolyl tetrazolium assay (MTT) to measure relative growth rate (RGR) and the single cell gel electrophoresis (comet assay) for DNA damage in mouse fibroblast L929 cells.
- Golden and cobalt-chromium alloys demonstrated significantly lower impact on RGR compared to nickel-chromium alloy (P<0.05).
- DNA damage was ranked as severe for nickel-chromium, moderate for cobalt-chromium, and mild for golden alloy.
Impact:
- Golden and cobalt-chromium alloys exhibit better biocompatibility than nickel-chromium alloys.
- The findings guide the selection of safer dental ceramic alloys.
- This research contributes to understanding the biological response to dental materials.
