Investigation of thiol-ene and thiol-ene-methacrylate based resins as dental restorative materials.
Investigation of thiol-ene and thiol-ene-methacrylate based resins as dental restorative materials.
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DOI：
10.1016/j.dental.2009.08.004
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发表时间：
2010-01
期刊：
影响因子：
5
通讯作者：
Bowman, Christopher N.
中科院分区：
文献类型：
--
作者：
Cramer, Neil B.;Couch, Charles L.;Schreck, Kathleen M.;Carioscia, Jacquelyn A.;Boulden, Jordan E.;Stansbury, Jeffrey W.;Bowman, Christopher N.
这项工作的目的是评估硫醇-异戊二烯和硫醇-烯-甲基丙烯酸酯系统作为牙科修复材料的树脂相，并证明其上级性能相比，二甲基丙烯酸酯材料。通过傅里叶变换红外光谱（FTIR）测定聚合动力学和总官能团转化率。用3点弯曲试验测定弯曲强度和模量。聚合引起的收缩应力用张力计测量。硫醇-烯聚合物体系被证明在快速固化动力学、高转化率和低收缩和应力方面表现出用于牙科修复材料的有利性质。然而，这里研究的硫醇-异戊二烯和硫醇-烯丙基醚系统都表现出相对于BisGMA/TEGDMA的弯曲强度和模量的显著降低。通过利用硫醇-烯组分作为二甲基丙烯酸酯体系中的反应性稀释剂，实现了高弯曲模量和强度，同时显著降低了聚合收缩应力。相对于BisGMA/TEGDMA（弯曲模量; 2.2 ± 0.1 GPa和弯曲强度; 112 ± 3 MPa），甲基丙烯酸酯-硫醇-烯丙基醚和甲基丙烯酸酯-硫醇-异丙基烯体系均表现出相等的弯曲模量（2.1 ± 0.1 GPa）和略微降低的弯曲强度（分别为95 ± 1和101 ± 3 MPa）。相对于BisGMA/TEGDMA（2.6 ± 0.2MPa），甲基丙烯酸酯-硫醇-烯丙基醚和甲基丙烯酸酯-硫醇-异丙基烯体系均表现出收缩应力的显著降低（分别为1.1 ± 0.1和1.1 ± 0.2MPa）。与传统的本体二甲基丙烯酸酯树脂相比，改进的聚合动力学和总官能团转化率，加上收缩应力的降低，同时保持相等的弯曲模量，导致上级整体牙科修复材料。
The objective of this work was to evaluate thiol-norbornene and thiol-ene-methacrylate systems as the resin phase of dental restorative materials and demonstrate their superior performance as compared to dimethacrylate materials. Polymerization kinetics and overall functional group conversions were determined by Fourier transform infrared spectroscopy (FTIR). Flexural strength and modulus were determined with a 3-point flexural test. Polymerization-induced shrinkage stress was measured with a tensometer. Thiol-ene polymer systems were demonstrated to exhibit advantageous properties for dental restorative materials in regards to rapid curing kinetics, high conversion, and low shrinkage and stress. However, both the thiol-norbornene and thiol-allyl ether systems studied here exhibit significant reductions in flexural strength and modulus relative to BisGMA/TEGDMA. By utilizing the thiol-ene component as the reactive diluent in dimethacrylate systems, high flexural modulus and strength are achieved while dramatically reducing the polymerization shrinkage stress. The methacrylate-thiol-allyl ether and methacrylate-thiol-norbornene systems both exhibited equivalent flexural modulus (2.1 ± 0.1 GPa) and slightly reduced flexural strength (95 ± 1 and 101 ± 3 MPa, respectively) relative to BisGMA/TEGDMA (flexural modulus; 2.2 + 0.1 GPa and flexural strength; 112 ± 3 MPa). Both the methacrylate-thiol-allyl ether and methacrylate-thiol-norbornene systems exhibited dramatic reductions in shrinkage stress (1.1 ± 0.1 and 1.1 ± 0.2 MPa, respectively) relative to BisGMA/TEGDMA (2.6 ± 0.2 MPa). The improved polymerization kinetics and overall functional group conversion, coupled with reductions in shrinkage stress while maintaining equivalent flexural modulus, result in a superior overall dental restorative material as compared to traditional bulk dimethacrylate resins.
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影响因子：
5
作者：
Lu, H;Stansbury, JW;Bowman, CN
通讯作者：
Bowman, CN
DOI：
10.1002/jbm.b.30088
发表时间：
2004-10-15
影响因子：
3.4
作者：
Lu, H;Stansbury, JW;Bowman, CN
通讯作者：
Bowman, CN
影响因子：
7.6
作者：
Pfeifer, C. S.;Ferracane, J. L.;Braga, R. R.
通讯作者：
Braga, R. R.
影响因子：
5.5
作者：
Cramer, NB;Scott, JP;Bowman, CN
通讯作者：
Bowman, CN
影响因子：
5.5
作者：
Lee, Tai Yeon;Carioscia, Jacquelyn;Bowman, Christopher N.
通讯作者：
Bowman, Christopher N.