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Polymerization characteristics, flexural modulus and microleakage evaluation of silorane-based and methacrylate-based composites
Gao, Bo-tao; Lin, Hong; Han, Jian-min; Zheng, Gang
刊名AMERICAN JOURNAL OF DENTISTRY
2011-04-01
24期:2页:97-102
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]MICROTENSILE BOND STRENGTH ; CLASS-V RESTORATIONS ; CONTRACTION STRESS ; DENTAL COMPOSITES ; SHRINKAGE STRESS ; C-FACTOR ; RESIN ; ADHESIVES ; SYSTEMS ; ELASTICITY
英文摘要

Purpose: To compare the behavior of a new low-shrinkage silorane-based composite (P90) with two conventional methacrylate-based composites, in terms of polymerization shrinkage, polymerization stress, gel point, flexural modulus and microleakage. Methods: The materials tested were P90 (3M ESPE), AP-X (Kuraray), Quixfil (Dentsply). Polymerization shrinkage was measured using the Accuvol method. Polymerization stress was assessed using a stress-strain analyzer. Polymerization shrinkage (%) and force (N) were continuously recorded for 300 seconds. Polymerization shrinkage and stress after 300 seconds and gel point were recorded. Flexural modulus was obtained by three-point bending. A laboratory microleakage test was performed. Class V cavities prepared on labial surfaces of 70 freshly extracted human teeth were randomly assigned to the seven groups (N=10): P90/PSA (P90 System Adhesive), AP-X/CBA (Clearfil SE Bond Adhesive), Quixfil/XBA (XP Bond Adhesive), P90/CBA, P90/XBA, AP-X/PSA, Quixfil/PSA. The teeth were immersed in 1% basic fuchsin dye for 24 hours at room temperature. All teeth were cut in a labial-lingual direction and the penetration of dye along the wall of cavities was observed under a stereoscopic light microscope. Statistical analysis was performed with one-way ANOVA, Kruskal-Wallis ANOVA test and post hoc tests (P < 0.05). Results: The low-shrinkage silorane-based composite (P90) exhibited significantly lower polymerization shrinkage, polymerization stress, flexural modulus and a later gel point than the conventional methacrylate-based composites. In the microleakage test, P90/PSA, AP-X/CBA, AP-X/PSA demonstrated the lowest microleakage scores without a significant difference among them (P > 0.05). Quixfil/XPA exhibited the highest microleakage scores. (Am J Dent 2011;24:97-102).

语种英语
WOS记录号WOS:000291236700006
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/56492
专题北京大学口腔医学院
北京大学口腔医学院_口腔材料学研究室
作者单位Peking Univ Sch & Hosp Stomatol, Dept Dent Mat, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Gao, Bo-tao,Lin, Hong,Han, Jian-min,et al. Polymerization characteristics, flexural modulus and microleakage evaluation of silorane-based and methacrylate-based composites[J]. AMERICAN JOURNAL OF DENTISTRY,2011,24(2):97-102.
APA Gao, Bo-tao,Lin, Hong,Han, Jian-min,&Zheng, Gang.(2011).Polymerization characteristics, flexural modulus and microleakage evaluation of silorane-based and methacrylate-based composites.AMERICAN JOURNAL OF DENTISTRY,24(2),97-102.
MLA Gao, Bo-tao,et al."Polymerization characteristics, flexural modulus and microleakage evaluation of silorane-based and methacrylate-based composites".AMERICAN JOURNAL OF DENTISTRY 24.2(2011):97-102.
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