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jsp.display-item.identifier=請使用永久網址來引用或連結此文件:
https://ir.csmu.edu.tw:8080/ir/handle/310902500/11304
题名:
Cytotoxicity of dentine bonding agents on human pulp cells is related to intracellular glutathione levels.
作者:
Huang, FM
Li, YC
Lee, SS
Chang, YC
贡献者:
中山醫學大學
http://dx.doi.org/10.1046/j.1365-2591.2002.00589.x
日期:
2010
上传时间:
2015-07-15T09:02:19Z (UTC)
摘要:
AIM:
To evaluate ex vivo the mechanisms of cytotoxicity of dentine bonding agents in human pulp cells in vitro.
METHODOLOGY:
Human pulp cells were obtained from impacted third molars with informed consent and then cultured using an explant technique. Set specimens from Clearfil SE Bond (CB), Prime & Bond 2.1 (PB), and Single Bond (SB) were eluted with culture medium. Cytotoxicity was judged using an assay of tetrazolium bromide reduction. To determine whether glutathione (GSH) levels were important in the cytotoxicity of dentine bonding agents, cells were pretreated with 2-oxothiazolidine-4-carboxylic acid (OTZ) to boost GSH levels or buthionine sulfoximine (BSO) to deplete GSH. Three replicates of each dentine bonding agents were performed in each test. All assays were repeated three times to ensure reproducibility. Statistical analysis was by one-way analysis of variance (anova). Tests of differences of the treatments were analysed by Duncan's test.
RESULTS:
Clearfil SE Bond, PB, and SB were cytotoxic to pulp cells in a concentration-dependent manner (P<0.05). The cytotoxicity was upregulated by dentine bonding agents in the following order: PB>SB>CB. Addition of OTZ extracellularly protected the pulp cells from dentine bonding agents-induced cytotoxicity (P<0.05). Addition of BSO enhanced pulp cell death on dentine bonding agents-induced cytotoxicity (P<0.05).
CONCLUSIONS:
Dentine bonding agents have significant potential for pulpal toxicity. GSH depletion could be the mechanism for dentine bonding agents-induced cytotoxicity.
© 2010 International Endodontic Journal.
URI:
https://ir.csmu.edu.tw:8080/ir/handle/310902500/11304
關聯:
Int Endod J. 2010 Dec;43(12):1091-7.
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