Modelling ATR-FTIR Spectra of Dental Bonding Systems to Investigate Composition and Polymerisation Kinetics.
Modelling ATR-FTIR Spectra of Dental Bonding Systems to Investigate Composition and Polymerisation Kinetics.
复制标题
模拟牙科粘接系统的ATR-FTIR光谱以研究组成和聚合动力学。
DOI：
10.3390/ma14040760
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发表时间：
2021-02-05
期刊：
影响因子：
--
通讯作者：
Young AM
中科院分区：
文献类型：
--
作者：
Delgado AH;Young AM
Component ratios and kinetics are key to understanding and optimising novel formulations. This warrants investigation of valid methods. Attenuated Total Reflectance Fourier Transform Infra-Red (ATR)-FTIR spectra of separate primers/adhesives were modelled using summed spectra of solvents (water, ethanol), methacrylate monomers (HEMA (hydroxyethyl methacrylate), Bis-GMA (bisphenol A glycidyl methacrylate), and 10-MDP (10-methacryloyloxydecyl dihydrogen phosphate)), and fillers, multiplied by varying fractions. Filler loads were obtained following their separation from the adhesives, by analysing three repetitions (n = 3). Spectral changes during light exposure at 37 °C (20 s, LED 1100–1330 mW/cm2) were used to determine polymerisation kinetics (n = 3). Independent samples T-test was used for statistical analysis (significance level of 5%). FTIR modelling suggested a primer solvent percentage of OBFL (Optibond FL) (30%) was half that of CFSE (Clearfil SE 2) (60%). OBFL included ethanol and water, while CFSE included only water. Monomer peaks were largely those of HEMA with lower levels of phosphate monomers. OBFL/CFSE adhesive model spectra suggested that both contained equal volumes of Bis-GMA/HEMA, with CFSE having 10-MDP. Filler levels and spectra from OBFL (48 wt.%) and CFSE (5 wt.%) were different. Both systems reached a 50% conversion rate within seconds of light exposure. The final conversion for OBFL (74 ± 1%) was lower compared to CFSE (79 ± 2%) (p < 0.05). ATR-FTIR is a useful method to investigate relative levels of main components in bonding systems and their polymerisation kinetics. Such information is valuable to understanding such behaviour.
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影响因子：
2.2
作者：
Sarr, M.;Kane, A. W.;De Munck, J.
通讯作者：
De Munck, J.
影响因子：
5
作者：
Cadenaro, Milena;Breschi, Lorenzo;Rueggeberg, Frederick A.;Suchko, Michael;Grodin, Evan;Agee, Kelli;Di Lenarda, Roberto;Tay, Franklin R.;Pashley, David H.
通讯作者：
Pashley, David H.
DOI：
10.1016/j.jdsr.2020.08.004
发表时间：
2020-11
期刊：
The Japanese dental science review
影响因子：
--
作者：
Perdigão J
通讯作者：
Perdigão J
影响因子：
5
作者：
Aljabo, A.;Xia, W.;Young, A. M.
通讯作者：
Young, A. M.
DOI：
10.1016/j.jmbbm.2020.103875
发表时间：
2020-10-01
影响因子：
3.9
作者：
Dressano, Diogo;Salvador, Marcos, V;Lima, Adriano Fonseca
通讯作者：
Lima, Adriano Fonseca