Identification of Free Radicals Generated by Different Curing Modes in a Dental Resin Cement

2016 ◽  
Vol 47 (9) ◽  
pp. 1003-1014 ◽  
Author(s):  
Bruno Luiz Santana Vicentin ◽  
Antonio Marchi Netto ◽  
Bernhard Blümich ◽  
Eduardo Di Mauro
2016 ◽  
Vol 20 (3) ◽  
pp. 155-159
Author(s):  
Dragan V Ilić ◽  
Kosovka Obradović-Đuričić ◽  
Vesna Medic ◽  
Srđan Poštić ◽  
Stanislava Z Gorjanović ◽  
...  

Summary Background: Free radicals (FR) occur in oral cavity where lot of food was transferred to through entire life under specific saliva conditions. Many enzymes, microorganism, alcohol beverages, nicotine and other harmful or indifferent substances when in contact to oral tissues might provoke oxidation process under specific condition creating FRʼs. The similar role might have various dental materials.Aim: Of the study was to record the level of antioxidant (AO) activity of several permanent (P) luting cements alone or combined with quercetin AO substance.Materials/Methods: P cements were Zn-phosphate, Zn-polycarboxilate, GIC and composite resin cement. They were prepared as original prescription and their variant by 1%weight addition of quercetin. AO activity of cements was measured by HPMC test evaluated by Student t test.Results: There were statistically significant differences among Zn-phosphate, Zn-polycarboxilate and resin dental cements (p ˃ 0,05). GIC displayed significantly higher AO values (p < 0,01) versus other three cements. There were no difference in AO capacity between sample of original P cements and their corresponding quercetin variants (p ˃ 0,05).Conclusions: Conventional GIC displayed the most powerful AO activity among P luting cements. Addition of 1% antioxidant quercetin did not improve AO capacity of investigated cements.


2014 ◽  
Vol 52 (4) ◽  
pp. 312
Author(s):  
Bon-Wook Goo ◽  
Sung-Hun Kim ◽  
Jai-Bong Lee ◽  
Jung-Suk Han ◽  
In-Sung Yeo ◽  
...  

2012 ◽  
Vol 127 (4) ◽  
pp. 2427-2434
Author(s):  
Jie Xiong ◽  
Xiang Sun ◽  
Jihua Chen ◽  
Lihui Tang

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Aleksandra Maletin ◽  
Dubravka Marković ◽  
Isidora Nešković ◽  
Branislava Petronijević ◽  
Tanja Veljović ◽  
...  

Introduction: The degree of polymerization of dental resin cement materi- als is very important for the longevity and quality of the clinical success of the restorative procedure. Insufficiently effective polymerization reaction of dental resin cement materials may result in adverse effects on the mechanical and adhesive performance of the material. It is believed that the proportion of triethylene glycol dimethacrylate (TEGDMA) mono- mers in the chemical structure of the material significantly influences the polymerization reaction. With the increase in TEGDMA, the degree of conversion of monomers into the polymer increases. Aim: The aim of this study has been to determine the degree of polymerization of dual cure dental resin cement. Material and methods: For the analysis of the degree of polymerization, Fourier transform infrared (FTIR) spectroscopy was used. 10 samples of dual cure resin based cement Variolink II were prepared in accordance with the manufacturer's instructions. Analysis was performed 24 hours after polymerization procedure. Results: Degree of polymerization of Variolink II resin based cement ranged from 69.2% to 98.7% with a mean value of 85.81%. Conclusion: Variolink II dual cure resin cement contains a significant percentage of TEGDMA which can be the cause of high degree of polymerization. The minimum accep- table percentage of the degree of polymerization of dental resin cement has not yet been established.


2019 ◽  
Vol 25 ◽  
pp. 3397-3405
Author(s):  
Aleksandra Maletin ◽  
Dubravka Markovic ◽  
Isidora Neskovic ◽  
Bojana Ramic ◽  
Tanja Veljovic ◽  
...  

2005 ◽  
Vol 284-286 ◽  
pp. 391-394
Author(s):  
Emílio Akaki ◽  
Herman S. Mansur ◽  
Lúcia H. Angelis ◽  
Barbara A. Castro ◽  
Henrique F. Valadão ◽  
...  

The demand from patients for aesthetic in posterior teeth restoration has been increasing in recent years. As an alternative to metal alloy restorations used in posterior tooth, aesthetical materials such as ceramics have been more often utilized. Resin cement, a derivative from dental composite, based on the combination of bis-GMA and inorganic filler is used to fixate these ceramic restorations to posterior teeth. Similar to resin composite, incorporated antibacterial agents to resin cement can be an effective way to increase the aesthetic restoration durability. Resin cements C&B® (Bisco) and Fill Magic Dual Cement® (Vigodent) were used in the present study. For experimental resin cement, Triclosan was incorporated to the base cement paste. Samples were investigated by Scanning Electron Microscopy coupled to EDX microprobe (SEM/EDX) and FTIR spectroscopy. The results have demonstrated that the incorporation of antibacterial agents to resin cement is possible through the developed procedure.


Author(s):  
Emílio Akaki ◽  
Herman S. Mansur ◽  
Lúcia H. Angelis ◽  
Barbara A. Castro ◽  
Henrique F. Valadão ◽  
...  

2021 ◽  
Author(s):  
Leila Marie Sears ◽  
Linfeng Wu ◽  
Brian R. Morrow ◽  
Wainscott Hollis ◽  
David R Cagna ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document