Properties of light-cured fluorine-containing resin

doi:10.3969/j.issn.2095-4344.2017.26.008

Abstract

Abstract:

BACKGROUND: Fluorine used for light-cured fluorine-containing resin can reduce and prevent dental caries, as well as play a long-term effect against tooth decay. However, there are rare reports on the composite preparation and performance.

OBJECTIVE: To study the preparation and performance of the light-cured fluorine-containing resin.

METHODS: Triethylamine as a catalyst, bisphenol A, bisphenol S, glycidyl methacrylate, trifluoroacetic anhydride and inorganic fillers (modified silicon dioxide, hydroxyapatite or titanium dioxide at mass fraction of 5%, 10%, 15%, 20%) were mixed to prepare the light-cured fluorine-containing resin. Then, the tensile strength, bending modulus, polymerization conversion and water of the composites were tested, and the morphology of the resin was observed under transmission electron microscope.

RESULTS AND CONCLUSION: At the same mass fraction, the tensile strength was highest in the titanium dioxide group, higher in the hydroxyapatite group, and lowest in the silicon dioxide group (P < 0.05). At the same mass fraction, there was no difference in the bending modulus between the titanium dioxide group and the hydroxyapatite group (P > 0.05), while the bending modulus in the silica group was significantly higher than that in the other two groups (P < 0.05). At the same mass fraction, the polymerization conversion of the composite resin was higher in the titanium dioxide group than the hydroxyapatite and silicon dioxide groups (P < 0.05), but there was no difference between the latter two groups (P > 0.05). With the increasing of mass fraction, the water absorption of the composite resin kept an increasing trend. Under the transmission electron microscope, the fracture surface of the silicon dioxide group was relatively flat, and the resin body exhibited good biocompatibility with the filler; in the hydroxyapatite group, the fracture surface was rough with obvious ups and downs, and the biocompatibility between the resin body and the filler was relatively poor; in the titanium dioxide group, the fracture surface was layered and the filler settled in the resin body, and moreover, titanium dioxide particles were deposited on the bottom of the resin, resulting in larger voids and filler particles as well as poor biocompatibility. To conclude, the light-cured fluorine-containing resin has good mechanical properties, curable properties and absorption rate.

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

Key words: Dental Materials, Bisphenol A-Glycidyl Methacrylate, Silicon Dioxide, Tissue Engineering

CLC Number:

R318

Wang Pu, Cheng Jie.

Properties of light-cured fluorine-containing resin

[J]. Chinese Journal of Tissue Engineering Research, 2017, 21(26): 4143-4148.

Figures/Tables 5

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