Biomechanical effects of new resin matrix system on dental fiber-reinforced composites

Siti Sunarintyas*, Widowati Siswomihardjo, Dyah Irnawati, Jukka Pekka Matinlinna

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

There are concerns that dental materials based on bis-phenol-A-glycidylmethacrylate (bis-GMA) may be hazardous. Alternative monomers such as 1,6-hexanediol dimethacrylate (HDDMA) is under research. This research aimed to determine the effect of resin matrix compositions on the biomechanical properties of E-glass fiber-reinforced composite (FRC) using bis-phenol-A-glycidylmethacrylate (bis-GMA), methylmethacrylate (MMA), 1,6-hexanediol dimethacrylate (HDDMA), camphorquinone (CQ) and N,N-cyanoethyl methylaniline (CEMA). The ratios of the resin matrices (weight %) were 78.4 % bis-GMA + 19.6 % MMA + 1 % CQ + 1 % CEMA (control-group), 78.4 % HDDMA + 19.6 % MMA + 1 % CQ + 1 % CEMA (EXP1-group) and 49 % HDDMA + 49 % MMA + 1 % CQ + 1 % CEMA (EXP2- group). E-glass fibers were embedded in matrix and light-cured for 3 × 40 s. Three-point bending (2 × 2 × 25) mm and Vicker's hardness (2 × 2 × 5) mm were examined (n = 6) by a universal testing machine (Torsee's UTM, Japan) and a micro-hardness tester (MTX70 Matsuzawa, Japan). The data were analyzed by ANOVA. Bending measurement revealed the mean value of control-group (674.1 ± 9.9) MPa was higher than EXP1-group (638.1 ± 8.6) MPa and EXP2-group (448.3 ± 7.8) MPa. The ANOVA showed significant difference in bending values among the groups (p < 0.05). Hardness measurement proved EXP1-group mean value (179.1 ± 2.5) VHN was higher than control-group (181.5 ± 11.5) VHN and EXP2-group (168.2 ± 7.9) VHN. The ANOVA proved there was significant difference (p < 0.05) in hardness values. In conclusion, a resin matrix system based on HDDMA-MMA (EXP1-group) showed comparable flexural strength and hardness properties to bis-GMA-MMA (control-group) system.

Original languageEnglish
Pages (from-to)1617-1620
Number of pages4
JournalAsian Journal of Chemistry
Volume28
Issue number7
DOIs
Publication statusPublished - 31 Mar 2016

Keywords

  • 1 6-Hexanediol dimethacrylate
  • biomechanics
  • fiber-reinforced composites

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