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学科主题: 口腔医学
题名:
Effect of filler content on the microtensile bond strength of composite resin and dentin in Class I cavities
作者: Han, Bing1,2; Dong, Yanmei1,2; Gao, Xuejun1,2; Wang, Xiaoyan1,2; Tian, Fucong1,2
关键词: composite resins ; filler content ; flexural modulus ; flowable composites ; microtensile bond strength ; polymerization shrinkage
刊名: QUINTESSENCE INTERNATIONAL
发表日期: 2012-02-01
卷: 43, 期:2, 页:E16-E22
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Dentistry, Oral Surgery & Medicine
研究领域[WOS]: Dentistry, Oral Surgery & Medicine
关键词[WOS]: POLYMERIZATION SHRINKAGE ; VOLUMETRIC SHRINKAGE ; FLEXURAL PROPERTIES ; STRESS ; RESTORATIONS ; MICROLEAKAGE ; SYSTEM ; SIZE
英文摘要:

Objective: To investigate the effect of filler content on microtensile bond strength (mu-TBS) in Class I cavities. Method and Materials: Experimental composites with filler contents of 80%, 76%, 70%, 60%, and 50% by weight were used. Polymerization shrinkage was measured with Acuvol, and a three-point flexural test was performed to determine flexural properties. For evaluation of mu-TBS, 25 extracted human molars were randomly divided into five groups and Class I cavities were prepared. After filling with one of the experimental composites and curing for 40 seconds, teeth were serially sectioned perpendicular to the cavity floor. Stick-shaped samples were tested with a microtensile tester. Statistical analysis was conducted using ANOVA and Pearson correlation tests. Results: Significant correlations were found between filler content and polymerization shrinkage (r = -0.973, P < .05) and the filler content and Young modulus (r = 0.891, P < .05). Different filler contents in the experimental composites had no significant effect on mu-TBS or flexural strength. Conclusion: In a Class I cavity model, this in vitro study showed that the filler content did not influence the flexural strength of experimental composite resins and had no effect on the microtensile bond strength between composite resin and dentin. (Quintessence Int 2012;43:e16-e22)

语种: 英语
所属项目编号: 50742009 ; 50830101
项目资助者: National Natural Science Foundation of China
WOS记录号: WOS:000300114700012
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/66348
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 Stomatol, Dept Cariol & Endodontol, Beijing 100081, Peoples R China
2.Peking Univ, Hosp Stomatol, Dept Cariol & Endodontol, Beijing 100081, Peoples R China

Recommended Citation:
Han, Bing,Dong, Yanmei,Gao, Xuejun,et al. Effect of filler content on the microtensile bond strength of composite resin and dentin in Class I cavities[J]. QUINTESSENCE INTERNATIONAL,2012,43(2):E16-E22.
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