Int J Stomatol

Int J Stomatol ›› 2022, Vol. 49 ›› Issue (4): 404-411.doi: 10.7518/gjkq.2022063

• Original Articles • Previous Articles     Next Articles

Effect of Zn-doped bioactive glass nanoparticles on the mechanical properties of modified composite resin

Wang Luming1,2(),Cao Xiao1,Wu Linyue1,Li Yuncong1,Lei Bo3,Niu Lin1()   

  1. 1.Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, Xi’an Jiaotong University, Xi’an 710004, China
    2.Dept. of Stomatology, The Second Affilia-ted Hospital of Xi’an Medical University, Xi’an 710038, China
    3.Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China
  • Received:2021-12-10 Revised:2022-03-06 Online:2022-07-01 Published:2022-06-28
  • Contact: Lin Niu E-mail:29968646@qq.com;niulin@xjtu.edu.cn
  • Supported by:
    National Science Basic Research Plan in Shaanxi Province of China(2020JM-414)

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Abstract:

Objective This study aimed to develop a novel composite resin modified using Zn-doped bioactive glass nanoparticles (Zn@BGN) with biological activity and to investigate the effect of Zn@BGN on the mechanical properties of the modified composite resin. Methods Three types of Zn@BGN with different ratios of zinc-doping ratios were synthesized using the sol-gel template method via the catalysis of dodecylamine. The optimum doping ratio of zinc was explored by performing a biological activity test in vitro. Three modified composite resin experimental groups were prepared by adding Zn@BGN with mass fractions of 10%, 15%, and 20%, and an unmodified composite resin served as the control group. The mechanical properties, such as flexural strength (FS), diametral tensile strength (DTS), compressive strength, and Vickers hardness, of the samples were tested using a universal material testing machine and a microhardness tester. ResultsZn@BGN prepared using the sol-gel template method showed relatively regular spherical particles with a diameter of approximately 150 nm and good monodispersity. In addition, it showed a good biological activity with 1.6%. No significant difference in mechanical properties was found between the modified groups and the control group when the ratios of Zn@BGN incorporation were 10% and 15% (P>0.05). However, the FS and DTS were significantly lower in the modified group with 20% incorporation than in the control group (P<0.05). Conclusion Zn@BGN featuring uniform particle size, good monodispersity, and excellent biological activity can be prepared using the sol-gel template method. Zn@BGN exerts no harmful effect on the mechanical properties of the modified composite resin with 15% incorporation.

Key words: zinc, bioactive glass nanoparticles, sol-gel template method, composite resin, mechanical properties

CLC Number: 

  • R 783.1

TrendMD: 

Tab 1

Different proportion of Zn@BGN mass fraction of components"

添加物质BGN1-Zn@BGN2-Zn@BGN6-Zn@BGN
ZnO01.62.66.4
CaO32.6323026.2
SiO258.258.258.258.2
P2O59.29.29.29.2

Tab 2

The composite resin mass fraction of each com-position"

材料对照组实验组1实验组2实验组3
Bis-GMA、TEGDMA28282828
CQ1111
DMAEMA1111
无机填料70605550
Zn@BGN0101520

Fig 1

TEM photos of Zn@BGN"

Fig 2

EDS element analysis diagram of Zn@BGN"

Fig 3

XRD spectrum of HA characteristic peaks"

Fig 4

Mechanical properties of modified composite resin"

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