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学科主题: 口腔医学
题名:
A comparison study on the flexural strength and compressive strength of four resin-modified luting glass ionomer cements
作者: Li, Yuan1,2; Lin, Hong1,2; Zheng, Gang1,2; Zhang, Xuehui1,2; Xu, Yongxiang1,2
关键词: Resin-modified glass ionomer cements ; flexural strength ; compressive strength ; curing mode ; light cured and chemical cured
刊名: BIO-MEDICAL MATERIALS AND ENGINEERING
发表日期: 2015
DOI: 10.3233/BME-151284
卷: suppl.1, 页:S9-S17
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Engineering, Biomedical ; Materials Science, Biomaterials
研究领域[WOS]: Engineering ; Materials Science
关键词[WOS]: CURING MODE ; CONVERSION ; COMPOSITE
英文摘要:

The purpose of this study is to compare the differences in flexural strength and compressive strength between four resin-modified luting glass ionomer cements that are commonly used in clinics. Furthermore, this study investigates the influence of curing mode on the flexural strength and compressive strength of dual-cured resin-modified glass ionomer cements. Initially, flexural strength and compressive strength test specimens were prepared for RL, NR, GCP, and GCC. The RL group and NR group were cured by the light-curing mode and chemical-curing mode. Five specimens were prepared for each test group, and the flexural strength and compressive strength of each were measured. Data were analyzed by one-way ANOVA with SPSS 13.0. Furthermore, the fracture morphology of the flexural specimens was observed by SEM. The result of the mean flexural strength of each group is as follows: the NR light-cured group > NR chemically-cured group > GCP > RL light-cured group > GCC > RL chemically-cured group. More specifically, the flexural strength of the NR light-cured group ((42.903 +/- 4.242) MPa) is significantly higher (P<0. 05) than those of the other groups, and in addition, the flexural strength of the light-curing mode is significantly higher (P<0. 05) than that of both the NR and RL chemically-cured groups. The result of the mean compressive strength of each group is as follows: GCP > NR chemically-cured group > NR light-cured group > GCC > RL light-cured group > RL chemically-cured group. Although the compressive strengths of the NR and GCP groups are higher than those of the GCC and RL groups, there are no significant differences (P>0. 05) between NR and GCP, and no significant differences between GCC and RL. Furthermore, there are no significant differences (P>0. 05) between the two curing modes on NR and RL. From the present study, it can be concluded that NR has superior flexural strength and compressive strength compared to the other three materials. Additionally, the curing mode can affect the flexural strength of dual-cured RMGIC because with the light-curing mode, the flexural strength is higher than with the chemical-curing mode. Therefore, light curing is an essential procedure when using dual-cured RMGIC in clinics.

语种: 英语
所属项目编号: 81470784
项目资助者: National Natural Science Foundation
WOS记录号: WOS:000361671800002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/52218
Appears in Collections:北京大学口腔医学院_期刊论文

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作者单位: 1.Peking Univ, Sch & Hosp Stomatol, Dent Med Devices Testing Ctr, Dept Dent Mat, Beijing 100081, Peoples R China
2.Peking Univ, Nat Engn Lab Digital & Mat Technol Stomatol, Beijing 100871, Peoples R China

Recommended Citation:
Li, Yuan,Lin, Hong,Zheng, Gang,et al. A comparison study on the flexural strength and compressive strength of four resin-modified luting glass ionomer cements[J]. BIO-MEDICAL MATERIALS AND ENGINEERING,2015,suppl.1:S9-S17.
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