Effect of proanthocyanidins and photo-initiators on photo-polymerization of a dental adhesive.
Effect of proanthocyanidins and photo-initiators on photo-polymerization of a dental adhesive.
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DOI：
10.1016/j.jdent.2012.10.006
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发表时间：
2013-01
影响因子：
4.4
通讯作者：
Wang Y
中科院分区：
文献类型：
--
作者：
Liu Y;Wang Y
评价原花青素（PA）和光引发剂类型对模型牙胶粘剂的转化率（DC）和聚合速率（PR）的影响。将三种类型的光引发体系引入到Bis-GMA/HEMA共单体混合物中，得到四种树脂配方，包括CQ/A (0.5 wt% CQ和EDMAB), CQ/A/I-1 (0.5 wt% CQ， EDMAB和DPIHP), CQ/A/I-2 （1.0 wt% CQ， EDMAB和DPIHP）和TPO （2.1 wt% TPO）。对于每种树脂配方，将树脂与不同量的PA/乙醇溶液混合后，生产出相对于树脂重量的PA含量为0、2.5%、5%和10%的胶粘剂。光固化时，采用ATR- FTIR光谱法测定各胶粘剂的RP和DC。在各引发剂组间和组内，DC依次为CQ/A < CQ/A/I-1 < CQ/A/I-2 < TPO和0-PA > 2.5-PA > 5-PA > 10-PA。PR随光引发体系和PA含量的变化规律相似，但不太明显。无论使用何种光引发剂，PA都会阻碍所有胶粘剂的聚合。引发剂配方CQ/A/I-2和TPO更适合于含PA的胶粘剂，在5% PA存在的情况下，两者的DC均为> ~ 65%。PA在牙科胶粘剂中的应用受到其对胶粘剂树脂光固化的干扰。本研究发现，光引发配方可以保持令人满意的单体转化程度，而大量的PA是掺入。
To evaluate the effects of proanthocyanidins (PA) and photoinitiator type on the degree of conversion (DC) and polymerization rate (PR) of a model dental adhesive. Three types of photo-initiation systems were introduced into the Bis-GMA/HEMA co-monomer mixture, resulting in four resin formulations including CQ/A (0.5 wt% CQ and EDMAB), CQ/A/I-1 (0.5 wt% CQ, EDMAB and DPIHP), CQ/A/I-2 (1.0 wt% CQ, EDMAB and DPIHP), and TPO (2.1 wt% TPO). For each resin formulation, adhesives containing 0, 2.5%, 5% and 10% of PA with respect to the weight of resin were produced after mixing the resin with various amount of PA/ethanol solution. When light-cured, the RP and DC of each adhesive was determined using ATR- FTIR spectroscopy. Across and within the initiator groups, the DC followed the general trend of CQ/A < CQ/A/I-1 < CQ/A/I-2 < TPO and 0-PA > 2.5-PA > 5-PA > 10-PA, respectively. The change of PR with respect to photo-initiation systems and PA content was in a similar but less pronounced pattern. PA hampered the polymerization of all adhesives regardless of photoinitiators used. The initiator formulations CQ/A/I-2 and TPO are better fit for PA-containing adhesives, both leading to > 65% DC in the presence of 5% PA. The inclusion of PA in dental adhesives has been limited by its interference with the light-curing of adhesive resins. This study found photo-initiation formulations that could maintain a satisfactory degree of monomer conversion while a significant amount of PA is incorporated.
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DOI：
10.1016/j.jmbbm.2011.05.003
发表时间：
2011-10
影响因子：
3.9
作者：
Castellan, Carina Strano;Bedran-Russo, Ana Karina;Karol, Sachin;Rodrigues Pereira, Patricia Nobrega
通讯作者：
Rodrigues Pereira, Patricia Nobrega
影响因子：
4.6
作者：
Grotzinger, C;Burget, D;Fouassier, JP
通讯作者：
Fouassier, JP
影响因子：
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作者：
Cook, Wayne D.;Chen, Fei
通讯作者：
Chen, Fei
影响因子：
5
作者：
Leprince, J. G.;Hadis, M.;Palin, W. M.
通讯作者：
Palin, W. M.
影响因子：
4.4
作者：
Green B;Yao X;Ganguly A;Xu C;Dusevich V;Walker MP;Wang Y
通讯作者：
Wang Y