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Research Articles
The influence of nanofillers on the properties of ethanol-solvated and non-solvated dental adhesives
Leonardo Bairrada Tavares da Cruz, Marcelo Tavares Oliveira, Cintia Helena Coury Saraceni, Adriano Fonseca Lima
Restor Dent Endod 2019;44(3):e28.   Published online July 24, 2019
DOI: https://doi.org/10.5395/rde.2019.44.e28
AbstractAbstract PDFPubReaderePub
Objectives

The aim of this study was to evaluate the influence of different concentrations of nanofillers on the chemical and physical properties of ethanol-solvated and non-solvated dental adhesives.

Materials and Methods

Eight experimental adhesives were prepared with different nanofiller concentrations (0, 1, 2, and 4 wt%) and 2 solvent concentrations (0% and 10% ethanol). Several properties of the experimental adhesives were evaluated, such as water sorption and solubility (n = 5, 20 seconds light activation), real-time degree of conversion (DC; n = 3, 20 and 40 seconds light activation), and stability of cohesive strength at 6 months (CS; n = 20, 20 seconds light activation) using the microtensile test. A light-emitting diode (Bluephase 20i, Ivoclar Vivadent) with an average light emittance of 1,200 mW/cm2 was used.

Results

The presence of solvent reduced the DC after 20 seconds of curing, but increased the final DC, water sorption, and solubility of the adhesives. Storage in water reduced the strength of the adhesives. The addition of 1 wt% and 2 wt% nanofillers increased the polymerization rate of the adhesives.

Conclusions

The presence of nanofillers and ethanol improved the final DC, although the DC of the solvated adhesives at 20 seconds was lower than that of the non-solvated adhesives. The presence of ethanol reduced the strength of the adhesives and increased their water sorption and solubility. However, nanofillers did not affect the water sorption and strength of the tested adhesives.

Citations

Citations to this article as recorded by  
  • Development of a Boron Nitride-Filled Dental Adhesive System
    Senthilguru Kulanthaivel, Jeremiah Poppen, Sandra Ribeiro Cunha, Benjamin Furman, Kyumin Whang, Erica C. Teixeira
    Polymers.2023; 15(17): 3512.     CrossRef
  • Analyses of Experimental Dental Adhesives Based on Zirconia/Silver Phosphate Nanoparticles
    Abdul Khan, Yasmin Alhamdan, Hala Alibrahim, Khalid Almulhim, Muhammad Nawaz, Syed Ahmed, Khalid Aljuaid, Ijlal Ateeq, Sultan Akhtar, Mohammad Ansari, Intisar Siddiqui
    Polymers.2023; 15(12): 2614.     CrossRef
  • Mechanical characterization and adhesive properties of a dental adhesive modified with a polymer antibiotic conjugate
    Camila Sabatini, Russell J. Aguilar, Ziwen Zhang, Steven Makowka, Abhishek Kumar, Megan M. Jones, Michelle B. Visser, Mark Swihart, Chong Cheng
    Journal of the Mechanical Behavior of Biomedical Materials.2022; 129: 105153.     CrossRef
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Effect of water storage on flexural strength of silorane and methacrylate-based composite resins
Narges Panahandeh, Hassan Torabzadeh, Hani Naderi, Seyedeh Mahsa Sheikh-Al-Eslamian
Restor Dent Endod 2017;42(4):309-315.   Published online November 6, 2017
DOI: https://doi.org/10.5395/rde.2017.42.4.309
AbstractAbstract PDFPubReaderePub
Objectives

This study assessed the effect of water storage on the flexural strength (FS) of low shrinkage composites.

Materials and Methods

A total of 165 bar-shaped specimens (2 × 2 × 25 mm) were fabricated of 2 low shrinkage composites (Filtek P90 [3M ESPE], GC Kalore [GC International]) and a conventional methacrylate-based composite (Filtek Z250 [3M ESPE]). The specimens were subjected to 3-point bending test at 6 time intervals, namely: immediately after curing, at 24 hours, 1 week, 1 month, 6 months, and 1 year following storage in wet and dry conditions. The FS of the specimens were measured by applying compressive load at a crosshead speed of 1.0 mm/min. Data was analyzed using 3-way analysis of variance (ANOVA) and Tukey's test.

Results

Three-way ANOVA revealed significant interactions between time, type of composite, and storage condition (p = 0.001). Tukey's multiple comparison test revealed significant reductions in FS of all composites after 6 months and 1 year of storage in distilled water compared to dry condition.

Conclusions

Filtek P90 showed the highest and GC Kalore showed the lowest FS after 1 year storage in distilled water. The immediate high strength of Filtek Z250 significantly decreased at 1 year and its final value was lower than that of Filtek P90.

Citations

Citations to this article as recorded by  
  • Effects of Bio-Aging on Mechanical Properties and Microbial Behavior of Different Resin Composites
    Yuke Shou, Lanzhi Deng, Xiaoyu Huang, Xinyu Peng, Xinxuan Zhou, Zheng Wang, Yannan Huang, Bina Yang, Haohao Wang, Min Zhang, Lei Cheng
    Biomolecules.2023; 13(7): 1125.     CrossRef
  • Changes in color and contrast ratio of resin composites after curing and storage in water
    Marlus da Silva Pedrosa, Fernando Neves Nogueira, Vitor de Oliveira Baldo, Igor Studart Medeiros
    The Saudi Dental Journal.2021; 33(8): 1160.     CrossRef
  • Ageing of Dental Composites Based on Methacrylate Resins—A Critical Review of the Causes and Method of Assessment
    Agata Szczesio-Wlodarczyk, Jerzy Sokolowski, Joanna Kleczewska, Kinga Bociong
    Polymers.2020; 12(4): 882.     CrossRef
  • Color stability of nanohybrid composite resins in drinks
    Juliana Jendiroba Faraoni, Isabela Barbosa Quero, Lívia Semedo Schiavuzzo, Regina Guenka Palma-Dibb
    Brazilian Journal of Oral Sciences.2019; 18: e191601.     CrossRef
  • Mechanical Degradation of Different Classes of Composite Resins Aged in Water, Air, and Oil
    Weber Adad Ricci, Priscila Alfano, Saulo Pamato, Carlos Alberto dos Santos Cruz, Jefferson Ricardo Pereira
    BioMed Research International.2019; 2019: 1.     CrossRef
  • Effects of water and microbial-based aging on the performance of three dental restorative materials
    Xinxuan Zhou, Suping Wang, Xian Peng, Yao Hu, Biao Ren, Mingyun Li, Liying Hao, Mingye Feng, Lei Cheng, Xuedong Zhou
    Journal of the Mechanical Behavior of Biomedical Materials.2018; 80: 42.     CrossRef
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Original Articles
THE CHANGE OF ADAPTABILITY CHANGE IN ADHESIVE SYSTEMS TO DENTIN SUBSTRTE ACCORDING TO STORAGE TIME
Young-Gon Cho, Il-Hwan Ban, Mi-Kyung Yu
J Korean Acad Conserv Dent 2005;30(3):204-214.   Published online January 14, 2005
DOI: https://doi.org/10.5395/JKACD.2005.30.3.204
AbstractAbstract PDFPubReaderePub
ABSTRACT

This study compared the microtensile bond strength (μTBS) and microscopic change of two 2-step and two 1-step self-etching adhesives to dentin according to storage times in distilled water.

Occlusal dentin was exposed in 48 human molars. They were divided to four groups by different adhesives: SE Bond group (Clearfil SE Bond), AdheSE group (AdheSE), Adper group (Adper Prompt L-Pop), and Xeno group (Xeno III). Each group was stored in 37℃ distilled water for 1, 15, and 30 days.

Resin-bonded specimens were sectioned into beams and subjected to μTBS testing with a crosshead speed of 1 mm/minute. For SEM observation, one specimen was selected and sectioned in each group after each stroage time. Resin-dentin interface was observed under FE-SEM.

In all storage times, mean μTBS of SE group was significantly higher than those of other groups (p < 0.05). There was no significant difference between mean μTBS of SE group and AdheSE group among all storage times, but significant difference between 1- and 30-day storage in mean μTBS of Adper group and Xeno group (p < 0.05). For 1-and 15-day storage, all groups showed the close adaptation between resin-dentin interfaces. For 30-day storage, resin-dentin interfaces showed wide gap in Adper group and separate pattern in Xeno III group.

Citations

Citations to this article as recorded by  
  • Effect of a desensitizer on dentinal bond strength in cementation of composite resin inlay
    Sae-Hee Han, Young-Gon Cho
    Journal of Korean Academy of Conservative Dentistry.2009; 34(3): 223.     CrossRef
  • The effect of thermocycling on the durability of dentin adhesive systems
    Young-Hoon Moon, Jong-Ryul Kim, Kyung-Kyu Choi, Sang-Jin Park
    Journal of Korean Academy of Conservative Dentistry.2007; 32(3): 222.     CrossRef
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RHEOLOGICAL PROPERTIES OF RESIN COMPOSITES ACCORDING TO THE CHANGE OF MONOMER AND FILLER COMPOSITIONS
In-Bog Lee, Jong-Hyuck Lee, Byung-Hoon Cho, Sang-Tag Lee, Chung-Moon Um
J Korean Acad Conserv Dent 2004;29(6):520-531.   Published online January 14, 2004
DOI: https://doi.org/10.5395/JKACD.2004.29.6.520
AbstractAbstract PDFPubReaderePub
ABSTRACT Objectives.

The aim of this study was to investigate the effect of monomer and filler compositions on the rheological properties related to the handling characteristics of resin composites.

Methods.

Resin matrices that Bis-GMA as base monomer was blended with TEGDMA as diluent at various ratio were mixed with the Barium glass (0.7 um and 1.0 um), 0.04 um fumed silica and 0.5 um round silica. All used fillers were silane treated. In order to vary the viscosity of experimental composites, the type and content of incorporated fillers were changed.

Using a rheometer, a steady shear test and a dynamic oscillatory shear test were used to evaluate the viscosity (η) of resin matrix, and the storage shear modulus (G′), the loss shear modulus (G″), the loss tangent (tanδ) and the complex viscosity (η *) of the composites as a function of frequency ω = 0.1-100 rad/s. To investigate the effect of temperature on the viscosity of composites, a temperature sweep test was also undertaken.

Results.

Resin matrices were Newtonian fluid regardless of diluent concentration and all experimental composites exhibited pseudoplastic behavior with increasing shear rate. The viscosity of composites was exponentially increased with increasing filler volume%. In the same filler volume, the smaller the fillers were used, the higher the viscosities were. The effect of filler size on the viscosity was increased with increasing filler content. Increasing filler content reduced tanδby increasing the G′further than the G″ . The viscosity of composites was decreased exponentially with increasing temperature.

Citations

Citations to this article as recorded by  
  • The 3D Printing Behavior of Photocurable Ceramic/Polymer Composite Slurries Prepared with Different Particle Sizes
    Kukhyeon Ryu, Jinho Kim, Junghoon Choi, Ungsoo Kim
    Nanomaterials.2022; 12(15): 2631.     CrossRef
  • Surface roughness of experimental composite resins using confocal laser scanning microscope
    JH Bae, MA Lee, BH Cho
    Journal of Korean Academy of Conservative Dentistry.2008; 33(1): 1.     CrossRef
  • Effect of a new resin monomer on the microleakage of composite resin restorations
    JH Bae, YK Kim, PY Yoon, MA Lee, BH Cho
    Journal of Korean Academy of Conservative Dentistry.2007; 32(5): 469.     CrossRef
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