中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (5): 731-735.doi: 10.12307/2023.834

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

不同光引发剂口腔复合树脂单体的设计合成及性能

魏玉雪1,王  棣1,刘晓秋2   

  1. 1山东省临沂市兰陵县人民医院口腔科,山东省临沂市  277700;2吉林大学口腔医院修复科,吉林省长春市  130021
  • 收稿日期:2022-09-21 接受日期:2022-11-21 出版日期:2024-02-18 发布日期:2023-08-16
  • 通讯作者: 刘晓秋,博士,主任医师,吉林大学口腔医院修复科,吉林省长春市 130021
  • 作者简介:魏玉雪,女,1990年生,山东省临沂市人,汉族,主治医师,硕士,主要从事口腔修复材料研究。
  • 基金资助:
    国家自然科学基金资助项目(813711841014238),项目负责人:刘晓秋;吉林省科技厅科研基金资助项目(20160519017JH),项目负责人:刘晓秋

Design, synthesis and properties of oral composite resin monomers with different photoinitiators

Wei Yuxue1, Wang Di1, Liu Xiaoqiu2   

  1. 1Department of Stomatology, Lanling County People’s Hospital, Linyi 277700, Shandong Province, China; 2Department of Restoration, Stomatological Hospital of Jilin University, Changchun 130021, Jilin Province, China
  • Received:2022-09-21 Accepted:2022-11-21 Online:2024-02-18 Published:2023-08-16
  • Contact: Liu Xiaoqiu, MD, Chief physician, Department of Restoration, Stomatological Hospital of Jilin University, Changchun 130021, Jilin Province, China
  • About author:Wei Yuxue, Attending physician, Master, Department of Stomatology, Lanling County People’s Hospital, Linyi 277700, Shandong Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 813711841014238 (to LXQ); Scientific Research Fund of Science and Technology Department of Jilin Province, No. 20160519017JH (to LXQ)

摘要:


文题释义:

复合树脂:其在牙科充填修复材料中的应用日益广泛,通常由3个重要成分组成:单体系统、初始聚合反应的引发剂系统与稳定剂系统。人们对复合树脂的改进主要集中在提高树脂的机械性能、减少聚合收缩性以防止继发龋、减少单体释出以增强生物安全性等方面。
光引发剂:光固化灯是影响聚合效率的主要因素之一,其光源性质及作用形式影响着树脂固化的效果。光引发剂可以使得光固化树脂通过吸收光子引起分子结构变化,进而促使树脂单体转化为聚合网络,继而引发聚合反应,以进一步实现固化作用。


背景:目前由树脂基质单体组成的牙科复合树脂充填物,是牙体缺损充填治疗的首选材料,但随着其在口腔环境中使用时间的延长,牙体组织继发龋以及充填材料磨损折断等问题随之而来,造成这些问题的主要原因是充填材料的聚合收缩及其与牙体组织的机械性能不匹配等。

目的:通过加入不同组分的引发剂合成牙科新型复合树脂单体,以提升传统体系的双键转化率并进一步提高材料的力学性能。
方法:将不同的引发剂加入3,3′,5,5′-四甲基联苯二酚型环氧丙烯酸酯树脂单体中,制备新型复合树脂基质体系:A组加入质量分数1.1%的樟脑醌,B组加入质量分数2.1%的1-苯基-1,2-丙二酮,C组加入质量分数3.1%的樟脑醌与1-苯基-1,2-丙二酮混合物(二者质量比为1∶1)。检测各组样品的双键转化率、聚合收缩率和机械性能。

结果与结论:①B、C组双键转化率高于A组(P < 0.05);B组聚合收缩率大于A组(P < 0.05),C组聚合收缩率小于A组(P < 0.05);②B、C组的挠曲强度、弹性模量、压缩强度均大于A组(P < 0.05,P < 0.01),B组的维氏硬度大于A组(P < 0.05),C组的维氏硬度小于A组(P < 0.01);③结果显示,1-苯基-1,2-丙二酮是一种性能较理想的引发剂,且1-苯基-1,2-丙二酮与樟脑醌联合应用可有效提高树脂基质体系的双键转化率,从而提高树脂的力学性能。

https://orcid.org/0000-0003-1527-2394(魏玉雪)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料口腔生物材料纳米材料缓释材料材料相容性组织工程

关键词: 牙科材料, 复合树脂, 引发剂, 双键转换率, 聚合收缩, 机械性能

Abstract: BACKGROUND: At present, the dental composite resin filling material composed of resin matrix monomer is the first choice material for the filling treatment of dental defects, but with the increase of its use time in the oral environment, the dental tissue will develop secondary caries and the filling material will wear and break. The main cause of these problems is the polymerization shrinkage of the filling material and its mismatch with the mechanical properties of the dental tissue. 
OBJECTIVE: To synthesize a new type of dental composite resin monomer by adding initiators with different components, to improve the traditional double bond conversion rate of the system and further improve the mechanical properties of the material. 
METHODS: A new composite resin matrix system was prepared by adding different initiators to the monomer of 3,3′,5,5′-tetramethoxybiphenyl-4,4′-diol epoxy acrylate resin. In group A, camphorquinone with a mass fraction of 1.1% was added. In group B, 1-phenyl-1,2-propanedione with a mass fraction of 2.1% was added. In group C, a mixture of camphorquinone and 1-phenyl-1,2-propanedione (a mass ratio of the two was 1:1) with a mass fraction of 3.1% was added. The double bond conversion, polymerization shrinkage and mechanical properties of the samples were determined. 
RESULTS AND CONCLUSION: (1) The double bond conversion rate of groups B and C was higher than that of group A (P < 0.05). The polymerization shrinkage of group B was higher than that of group A (P < 0.05), while that of group C was lower than that of group A (P < 0.05). (2) The flexural strength, elastic modulus and compressive strength of groups B and C were higher than those of group A (P < 0.05, P < 0.01). Vickers hardness of group B was higher than that of group A 
(P < 0.05), and the Vickers hardness of group C was lower than that of group A (P < 0.01). (3) These findings suggest that 1-phenyl-1,2-propanedione is an initiator with ideal performance. The combined application of 1-phenyl-1,2-propanedione and camphorquinone can effectively improve the double bond conversion rate of the resin matrix system and further improve the mechanical property of the resin. 

Key words: dental material, composite resin, initiator, double bond conversion rate, polymerization shrinkage, mechanical property

中图分类号: