口腔医学研究

口腔医学研究 ›› 2021, Vol. 37 ›› Issue (10): 936-939.DOI: 10.13701/j.cnki.kqyxyj.2021.10.016

• 牙体粘接修复学研究 • 上一篇    下一篇

不同粘接系统联合硅烷偶联剂对陈旧性复合树脂粘接效果的影响

刘小雪, 李艳萍, 何丽娜, 李季, 戴鑫睿, 牛玉梅*   

  1. 哈尔滨医科大学附属第一医院,哈尔滨医科大学口腔医学院牙体牙髓病科 黑龙江 哈尔滨 150001
  • 收稿日期:2021-02-25 出版日期:2021-10-28 发布日期:2021-10-18
  • 通讯作者: *牛玉梅,E-mail:niuym@hrbmu.edu.cn
  • 作者简介:刘小雪(1994~ ),女,吉林白城人,硕士,医师,主要从事牙体牙髓病科临床治疗工作。
  • 基金资助:
    国家自然科学基金面上项目(编号:81970924)

Effect of Silane Coupling Agent Combined with Different Adhesive Systems on Adhesive Strength and Microleakage of Aging Composite Resin

LIU Xiaoxue, LI Yanping, HE Lina, LI Ji, DAI Xinrui, NIU Yumei*   

  1. Department of Endodontics, The First Clinical Hospital Affiliated to Harbin Medical University, School of Stomatology, Harbin Medical University, Harbin 150001, China
  • Received:2021-02-25 Online:2021-10-28 Published:2021-10-18

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摘要： 目的:研究不同粘接系统或联合硅烷偶联剂对陈旧性复合树脂粘接粘接强度和微渗漏的影响。方法:使用纳米型复合树脂制作树脂块,并储存在(37±1) ℃的蒸馏水中2个月,表面经金刚砂车针打磨后,按表面处理方式不同分为5组:A:对照组(不进行化学处理);B:两步法自酸蚀粘接系统(Clearfil SE Bond,CSE组);C:硅烷偶联剂预处理+两步法自酸蚀粘接系统(硅烷+CSE组);D:通用型粘接系统(Single Bond Universal,SBU组);E:硅烷偶联剂预处理+通用型粘接系统(硅烷+SBU组)。上述表面处理后,使用新鲜树脂分别进行充填、固化。使用低速金刚石切割机分别沿两个垂直方向纵向片切样本,每组制备10个横截面积为1.0 mm2的试件条,进行微拉伸测试,并在体视显微镜下观察样本断裂模式。将粘接完成后的样本,通过亚甲基蓝染色法观察粘接界面的微渗漏。结果:实验组微拉伸粘接强度显著大于对照组(P<0.05),硅烷可以增大新旧树脂间粘接强度,且硅烷+SBU组微拉伸粘接强度最大(P<0.05)。体视显微镜下显示实验组样本断裂模式均以内聚断裂为主,对照组多为粘接界面断裂。实验组新旧树脂间微渗漏显著小于对照组(P<0.05);4个实验组新旧树脂间微渗漏无明显差异(P>0.05)。结论:表面使用粘接剂或联合硅烷偶联剂均可显著提高陈旧性树脂与新鲜树脂之间的粘接强度,并降低新旧树脂间微渗漏;硅烷偶联剂联合通用型粘接剂修复效果更佳。

关键词: 陈旧性复合树脂, 粘接系统, 硅烷偶联剂, 微拉伸粘接强度, 微渗漏

Abstract: Objective: To investigate the effects of different bonding systems or combined silane coupling agents on the bonding strength and microleakage of aged composite resins. Methods: Nano-type composite resin was used to prepare resin blocks and stored in distilled water at (37±1) ℃ for 2 months. The surface was polished by carborundum bur and divided into five groups according to different surface treatment Methods: A, control group (without chemical treatment); B, two-step self-etching bonding system (Clearfil SE Bond, CSE group); C, silane coupling agent pretreatment and two-step self-etching bonding system (silane + CSE group); D, universal bonding system (Single Bond Universal, SBU group); and E, silane coupling agent pretreatment and general bonding system (silane+ SBU group). After treatment, the fresh resin was used for filling and curing, respectively. The samples were sliced longitudinally along two vertical directions using a low-speed diamond cutting machine, and 10 specimens with cross-sectional area of 1.0mm2 were prepared in each group. The microtensile test was carried out and all the fractures were observed under stereoscopic microscope. After the bonding was completed, the microleakage of the bonding interface was observed by methylene blue staining. Results: The microtensile bonding strength of the experimental group was significantly higher than that of the control group (P<0.05). Silane could increase the bonding strength between fresh and aged resin, and the microtensile bonding strength of silane SBU group was the largest (P<0.05). Under the stereoscopic microscope, the fracture modes of the samples in the experimental group were mainly cohesive fracture, while those in the control group were mainly adhesive interface fracture. The microleakage between fresh and aged resins in the experimental group was significantly less than that in the control group (P<0.05), but there was no significant difference among four experimental groups (P>0.05). Conclusion: The surface application of adhesive or combined silane coupling agent can significantly improve the bonding strength and reduce the microleakage between aged resin and fresh resin, and the repair effect of silane coupling agent combined with universal adhesive has better repair effect.

Key words: aged composite resin, bonding system, silane coupling agent, micro-tensile bonding strength, microleakage