新型纳米含氟树脂中氟水平对其机械性能的影响

doi:10.13481/j.1671-587x.20150221

Abstract

Abstract:

Objective To study the effects of fluoride level on the mechanical properties,such as flexural strength,elastic modulus and micro-tensile bond strength(μTBS),of new nano-fluoride-containing resin.Methods Z350 and four composite resins (containing 0%,10%,20% and 30% fluoride)were selected. Five kinds of resins were used to make standard samples with the size of (25.0±2.0)mm×(2.0±0.1)mm×(2.0±0.1)mm,and there were 5 specimens in each group. The flexural strength and elastic modulus of the specimens were assessed using a three-point bending test on a universal test machine. Twenty five human molars were randomly divided into five groups,and there were 5 molars in each group. The teeth were sectioned with a cross-section of (1.0±0.2)mm²,and there were ten specimens in each group,and the μTBS of specimens were detected by Micro Tensile Tester. The fracture modes of specimens were observed under low magnification microscope.Results The flexural test results showed that there was no significant difference of the flexural strength of specimen among all groups(P>0.05);the elastic modulus of specimens in 20%F group was higher than those in the other groups(P<0.05).The micro-tensile test results showed that the μTBS of the specimens in 30%F group was lower than those in 0%F group,10%F group and 20%F group(P<0.05);but there were no significant differences of μTBS between 0%F group and 10%F or 20% F groups (P>0.05).Compared with Z350 group,the μTBS of the specimens in 20% and 30%F groups were significantly decreased (P<0.05),but there were no significant differences of μTBS between 0%, 10% F groups and Z350 group (P>0.05).All specimens were broken from the adhesive surface.Conclusion When the fluoride level is lower than 20%,it has no effect on μTBS;when the fluoride level is above 20%,the μTBS is significantly decreased.

Key words: flexural strength, elastic modulus, micro-tensile, bond strength, fluoride-containing resin, mechanical property

CLC Number:

R995

LI Wenran, WANG Chengkun, DENG Lina, WANG Te, WANG Jing. Effects of fluoride level on mechanical properties of new nano-fluoride-containing resin[J].Journal of Jilin University Medicine Edition, 2015, 41(02): 311-315.

References

[1] 谭彦妮,刘咏,向其军. 牙科光固化复合树脂材料的性能与展望[J]. 粉末冶金材料科学与工程,2007,12(3):139-145.

[2] 胡晓刚,王琳,顾晓宇,等. 口腔修复材料——光固化复合树脂的研究进展[J]. 材料导报,2006,20(5):44-46.

[3] de Carvalho FG,Puppin-Rontani RM,Soares LES,et al. Mineral distribution and CLSM analysis of secondary caries inhibition by fluoride/MDPB-containing adhesive system after cariogenic challenges [J]. J Dent,2009,37(4):307-314.

[4] Pandit S,Kim GR,Lee MH,et al. Evaluation of Streptococcus mutans biofilms formed on fluoride releasing and non fluoride releasing resin composites [J]. J Dent,2011,39(11):780-787.

[5] 侯绍杰. 释氟性充填材料预防继发龋的体外研究[D]. 西安:第四军医大学,2013.

[6] 罗娟,刘学恒,王新知. 氧化锆和纳米金刚石比例对核树脂挠曲强度的影响[J]. 北京口腔医学,2007,15(5):241-244.

[7] Sano H,Shono T,Sonoda H,et al. Relationship between surface area for adhesion and tensile bond strength-evaluation of a micro-tensile bond test [J]. Dent Mater,1994,10(4):236-240.

[8] 邓丽娜. 纳米含氟高强度树脂细胞毒性及氟释放的体外研究[D]. 长春:吉林大学,2013.

[9] 郑铁丽,黄翠,张智星,等. 离体牙储存方式对牙本质黏结剂微拉伸强度的影响[J]. 上海口腔医学,2005,14(2):147-150.

[10] Pavan S,Dos Santos PH,Berger S,et al. The effect of dentin pretreatment on the microtensile bond strength of self-adhesive resin cements [J]. J Prosthet Dent,2010,104(4):258-264.

[11] 李磊丹,夏文薇. 树脂微拉伸粘结强度测试法的影响因素[J]. 牙体牙髓牙周病学杂志,2011,21(10):604-606.

[12] Raposo LHA,Armstrong SR,Maia RR,et al. Effect of specimen gripping device,geometry and fixation method on microtensile bond strength,failure mode and stress distribution:laboratory and finite element analyses [J]. Dent Mater,2012,28(5):e50-e62.

[13] de Araújo TD,Bresciani E,Gomes Torres CR,et al. Effect of delayed start of light-curing on microtensile bond strengths of two adhesives bonded to dentin [J]. Int J Adhes Adhes,2014,54:155-158.

[14] Ding PGF,Matzer ARAH,Wolff D,et al. Relationship between microtensile bond strength and submicron hiatus at the composite-dentin interface using CLSM visualization technique [J]. Dent Mater,2010,26(3):257-263.

[15] Wiegand A,Buchalla W,Attin T. Review on fluoride-releasing restorative materials-fluoride release and uptake characteristics,antibacterial activity and influence on caries formation [J]. Dent Mater,2007,23(3):343-362.

[16] 陈丽娟,万延俊,孟庆飞,等. 氟离子导入对牙本质粘接系统微拉伸粘接强度的影响[J]. 中华口腔医学研究杂志:电子版,2013,7(2):25-28.

[17] Chen LJ,Meng QF,Chen YM,et al. Effect of fluoride iontophoresis on the microtensile bond strength between dentin and two adhesive systems [J]. J Dent,2008,36(9):697-702.

[18] Hosaka K,Nakajima M,Takahashi M,et al. Relationship between mechanical properties of one-step self-etch adhesives and water sorption [J]. Dent Mater,2010,26(4):360-367.

[19] van Dijken JWV,Sunnegärdh-Grönberg K,Lindberg A. Clinical long-term retention of etch-and-rinse and self-etch adhesive systems in non-carious cervical lesions:a 13 years evaluation [J]. Dent Mater,2007,23(9):1101-1107.

Effects of fluoride level on mechanical properties of new nano-fluoride-containing resin

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 5

Metrics

Comments

Recommended 0

[1]	WANG Shoudong, YANG Luyi, NING Lei, MU Qili, YAN Jing, ZHAO Xuejiao, YU Miao, SUN Shufen. Comparison of bond strengths of three kinds of metal bottom plate brackets before and after sandblasting and its significance [J]. Journal of Jilin University(Medicine Edition), 2018, 44(05): 949-954.
[2]	YU Shiyang, QI Pengpeng, WANG Honghong, LI Yushan, WANG Jingyun. Effects of different surface treatment methods on bond strength of zirconia prosthesis [J]. Journal of Jilin University Medicine Edition, 2017, 43(03): 588-592.
[3]	TAI Yinxia, ZHU Xianchun, TANG Guanqun, WANG Qiuyu, MAO Zhi. Influence of different surface treatments in bond strength of brackets to porcelain [J]. Journal of Jilin University Medicine Edition, 2015, 41(06): 1207-1210.
[4]	WANG Xiao-Rong, SUN Shi-Qun, ZHANG Ci-Tong, DUAN Liang-Wei, LIANG Shuang. Relationship between flexural strength \|of room curing PMMA and \|cross-section observation under confocal laser scanning microscope [J]. J4, 2011, 37(1): 89-92.
[5]	GUO Liang-wei,SUN Hong-chen, XU Jing-wei,OUYANG Jie. Effect of thermal cycling on resin-dentin interface of two bonding agents [J]. J4, 2006, 32(2): 309-312.