Solid glass bead modified bisphenol A-glycidyl methacrylate resin composite as a filling material

doi:10.3969/j.issn.2095-4344.2013.25.005

Abstract

Abstract:

BACKGROUND: Oral compound resin has high polymerization shrinkage rate and low mechanical strength that cannot meet the clinical requirements.
OBJECTIVE: To investigate the ratio of bisphenol A-glycidyl methacrylate and triethylene glycol dimethacrylate as the resin matrix, and solid glass bead effects on flexural strength and polymerization shrinkage rate of oral composite resin.
METHODS: Solid glass beads were siliconized by silane coupling agent KH-550. Solid glass beads at mass fraction of 10%, 30%, 50%, 70% and 90% were added into the oral composite resin containing bisphenol A-glycidyl methacrylate and triethylene glycol dimethacrylate at a ratio of 7/3, 6/4, and 5/5, respectively. After mechanical stirring, the mixture filled the mold for solidification. Non-solid glass bead resin served as control. Mechanical properties and shrinkage rate were analyzed.
RESULTS AND CONCLUSION: With the increasing addition of solid glass beads, the flexural strength was increased first and then decreased, and polymerization shrinkage rate tended to be declined. The highest flexural strength was (88.29±0.66) MPa (P < 0.05), when bisphenol A-glycidyl methacrylate and triethylene glycol dimethacrylate were mixed at a ratio of 5/5 and the addition amount of solid glass beads was 70%. The minimal polymerization shrinkage rate was 0.898%, when bisphenol A-glycidyl methacrylate and triethylene glycol dimethacrylate were mixed at a ratio of 7/3 and the addition amount of solid glass beads was 70%.

Key words: biomaterials, tissue-engineered oral materials, oral composite resin, solid glass beads, silane coupling agent, bisphenol A-glycidyl methacrylate, triethylene glycol dimethacrylate, oral biomaterials

CLC Number:

R318

Meng Xiang-cai, Wang Jian-ping, He Mei-li. Solid glass bead modified bisphenol A-glycidyl methacrylate resin composite as a filling material[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(25): 4593-4600.

Figures/Tables 6

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