口腔医学研究

口腔医学研究 ›› 2018, Vol. 34 ›› Issue (5): 505-508.DOI: 10.13701/j.cnki.kqyxyj.2018.05.011

• 口腔材料学研究 • 上一篇    下一篇

新型光固化树脂聚合收缩和机械性能的研究

张娜1, 谢超2*, 何惠明3, 龚旭4   

  1. 1. 皖南医学院口腔医学院 安徽 芜湖 241002;
    2. 第四军医大学口腔医院种植科 陕西 西安 710032;
    3. 第四军医大学口腔医院修复科 陕西 西安 710032;
    4. 第四军医大学口腔医院材料科 陕西 西安 710032
  • 收稿日期:2017-10-25 出版日期:2018-05-28 发布日期:2018-05-29
  • 通讯作者: 谢超,E-mail:xchy2006@fmmu.edu.com
  • 作者简介:张娜(1987~ ),女,安徽安庆人,硕士在读,助教,主要从事口腔材料学研究。

Polymerization Shrinkage and Mechanical Property of Light Curing Composite Resin Incorporated a Novel Monovinyl Acrylates Monomer.

ZHANG Na1, XIE Chao2*, HE Hui-ming3, GONG Xu4   

  1. 1. Wannan Medical College, Wuhu 241002, China.
    2. Department of Implantology, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China;
    3. Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China;
    4. Department of Dental Materials, School of Stomatology, The Fourth Military Medical University, Xi’an 710032, China
  • Received:2017-10-25 Online:2018-05-28 Published:2018-05-29

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摘要： 目的:评价新型单乙烯基丙烯酸树脂单体改性光固化树脂的聚合收缩和机械性能。方法:将新型单乙烯基丙烯酸树脂(2-(苯基氨基甲醛基)氧乙基甲基丙烯酸酯)作为稀释剂合成复合树脂作为实验组,双甲基丙烯酸二缩三乙二醇酯(TEGDMA)作为稀释剂合成复合树脂作为对照组1,另外选取Tentric N-Ceram,Neofil,GC纳米幻彩分别作为对照组2,对照组3,对照组4,用micro-CT测量5组复合树脂聚合收缩前和聚合收缩后的体积,计算其聚合收缩率,用万能实验机和显微硬度仪测机械性能,比较5组树脂的挠曲强度、压缩强度、径向拉伸强度及显微硬度。结果:新型单乙烯基丙烯酸树脂作为稀释剂的实验组树脂的聚合收缩率较对照组1有统计学差异(P<0.05),较对照组2~4组无统计学差异,机械性能5种树脂之间无统计学差异。结论:新型单乙烯基丙烯酸树脂作为稀释剂降低了复合树脂的聚合收缩,而复合树脂的机械性能并没有降低,具有一定的临床应用的前景。

关键词: 复合树脂, 聚合收缩, 挠曲强度, 压缩强度, 径向拉伸强度, 硬度

Abstract: Objective: To evaluate the polymerization shrinkage and mechanical property of light curing composite resin incorporated new monovinyl acrylates monomer. Methods: New monovinyl acrylates monomer was incorporated into traditional composite resin as experimental group. The composite resin used TEGDMA was served as control group 1. Tentric N-Ceram, Neofil, and GC were selected as control group 2, 3, and 4, respectively. The X-ray micro-computed tomography was used to determine the volume of five composite resins after polymerization shrinkage. The mechanical properties of the samples were measured with universal testing machine and microhardness meter. The polymerization shrinkage, flexural strength, compressive strength, diametral tensile strength, and microhardness were measured and compared. Results: The polymerization shrinkage of the light curing composite resin incorporated new monovinyl acrylates monomer was decreased in contrast to the control group 1. There were no significant differences in polymerization shrinkage between the experimental group and the control group 2-4. There were no significant differences in mechanical properties between the experimental group and the four control groups. Conclusion: The incorporation of monovinyl acrylates monomer possessed the potential to replace TEGDMA as a reactive diluent in dental resin which displayed favorable and unique properties. The material has its value in clinical application.

Key words: Composite resin, Polymerization shrinkage, Flexural strength, Compressive strength, Diametral tensile strength, Microhardness