TY - JOUR
T1 - The dynamic viscoelasticity of dental soft polymer material containing citrate ester-based plasticizers
AU - Hong, Guang
AU - Wang, Wei Qi
AU - Sun, Lu
AU - Han, Jian Min
AU - Sasaki, Keiichi
N1 - Funding Information:
Funding: Part of this research was supported by Grant-in-Aid (No. 19K10199) for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
Publisher Copyright:
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2020/11
Y1 - 2020/11
N2 - The aim of this study was to investigate the dynamic viscoelasticity of dental soft polymer material containing citrate ester-based plasticizers. Three kinds of citrate ester-based plasticizer (Citroflex® C-2: TEC, Citroflex® A-2: ATEC, and Citroflex® A-4: ATBC), with the combination of 5 wt% ethyl alcohol, were used as the liquid phase. The dynamic viscoelastic properties of nine ethyl methacrylate polymers: (A, B, C, D, E, F, G, H, and I) were immersed in 37◦C distilled water for 0, 1, 3, 7, 14 and 30 days, respectively. The dynamic viscoelastic properties were measured at 37◦C with an automatic dynamic mechanical analyzer. The shear storage modulus (G′ ), shear loss modulus (G”), and loss tangent (tan δ) were determined at 1 Hz. These parameters were statistically analyzed by two-way and one-way ANOVA and Tukey’s multiple comparison test at a predetermined significance level of 0.05. A significant difference was found among the materials in terms of the dynamic viscoelasticity. The materials containing citrate ester-based plasticizer ATBC showed the most stable dynamic viscoelasticity. Considering the limitations of this study, the results suggest that the inclusion of citrate ester-based plasticizer can improve the durability of dental soft polymer materials.
AB - The aim of this study was to investigate the dynamic viscoelasticity of dental soft polymer material containing citrate ester-based plasticizers. Three kinds of citrate ester-based plasticizer (Citroflex® C-2: TEC, Citroflex® A-2: ATEC, and Citroflex® A-4: ATBC), with the combination of 5 wt% ethyl alcohol, were used as the liquid phase. The dynamic viscoelastic properties of nine ethyl methacrylate polymers: (A, B, C, D, E, F, G, H, and I) were immersed in 37◦C distilled water for 0, 1, 3, 7, 14 and 30 days, respectively. The dynamic viscoelastic properties were measured at 37◦C with an automatic dynamic mechanical analyzer. The shear storage modulus (G′ ), shear loss modulus (G”), and loss tangent (tan δ) were determined at 1 Hz. These parameters were statistically analyzed by two-way and one-way ANOVA and Tukey’s multiple comparison test at a predetermined significance level of 0.05. A significant difference was found among the materials in terms of the dynamic viscoelasticity. The materials containing citrate ester-based plasticizer ATBC showed the most stable dynamic viscoelasticity. Considering the limitations of this study, the results suggest that the inclusion of citrate ester-based plasticizer can improve the durability of dental soft polymer materials.
KW - Citrate ester-based plasticizer
KW - Dental soft polymer
KW - Dynamic viscoelasticity
KW - Tissue conditioner
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U2 - 10.3390/ma13225078
DO - 10.3390/ma13225078
M3 - Article
AN - SCOPUS:85095932048
SN - 1996-1944
VL - 13
SP - 1
EP - 11
JO - Materials
JF - Materials
IS - 22
M1 - 5078
ER -