High performance dental resin composites with hydrolytically stable monomers

Wang, Xiaohong; Huyang, George; Palagummi, S.; Liu, Xiaohui; Škrtić, Drago; Beauchamp, Carlos; Bowen, R.L.; Sun, Jirun

doi:10.1016/j.dental.2017.10.007

Cited by 80 publications

(74 citation statements)

References 59 publications

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“…Properties of resin based cements critical to the success of adhesive restorations include adequate bond strength, low solubility, biocompatibility, color stability, low film thickness and polymerization shrinkage. 1 Resin cements are classified according to the filler type (micro, micro, nano), mode of activation (photo, chemical and dual cure) and bonding mechanism (self-etch and total etch). 2 Resin cements contain different monomers linked together during polymerization reaction.…”

Section: Introductionmentioning

confidence: 99%

Degree of conversion and depth of cure of Ivocerin containing photo-polymerized resin luting cement in comparison to conventional luting agents

Alkhudhairy¹,

Al‐Kheraif²,

Naseem³

et al. 2018

Pak J Med Sci

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Objective:To evaluate the degree of conversion (DC) and depth (extent) of cure of four resin cements (Variolink E, Calibra, NX3 and Variolink N) using Fourier transform infrared (FTIR) and Vickers Micro hardness (MH).Methods:Ten disks (1mmx2mm) of each resin cement were light cured through a ceramic disk for 40 seconds prior to assessment. The ATR spectra of the uncured resin were collected in absorbance mode from 16 scans at 4 wave number resolutions. Degree of conversion was calculated by estimating the changes in peak height ratio of the absorbance intensities of aliphatic C=C peak at 1638 cm-1 and that of an internal standard peak of aromatic C=C at 1608 cm-1 during polymerization. For Vickers microhardness testing 10 disks of each cement specimen was exposed to 100 grams of load for 15 seconds. Three indentations were made 0.5mm apart and an average Vickers micro-hardness (MH) for each specimen. Two way ANOVA and multiple comparison tests were performed to assess data.Results:The highest degree of conversion by peak area was shown by Variolink-Esthetic [light-cure (87.18±2.90%)]; however the lowest was observed in samples of Variolink-N [Dual cure (44.55±4.33%)]. Similarly, Variolink-Esthetic and NX3 cement showed significantly higher MH as compared to other groups.Conclusion:Ivocerin containing Variolink–E cement showed high degree of conversion and extent of polymerization when compared to conventional light and dual cure luting cements.

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Section: Introductionmentioning

confidence: 99%

Degree of conversion and depth of cure of Ivocerin containing photo-polymerized resin luting cement in comparison to conventional luting agents

Alkhudhairy¹,

Al‐Kheraif²,

Naseem³

et al. 2018

Pak J Med Sci

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“…When compared to traditional enamel repair methods, our enamel repair with amorphous ceramics is outstanding (Figure i). Both the Young's modulus and hardness of E‐Amorphous ZrO 2 surpassed the values of enamel repaired by remineralization and with a composite resin, which showed a similar behavior to the E‐Sound samples (Figure i). To the best of our knowledge, the adoption of amorphous ZrO 2 in the fields of enamel repair has not been previously reported, and our enamel repair approach has been proven advantages, indicating great potential for future clinical applications.…”

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confidence: 66%

Enamel Repair with Amorphous Ceramics

et al. 2020

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Developing high‐performance materials in physiological conditions to clinically repair stiff tissue for long lifespan remains a great challenge. Here, an enamel repair strategy is reported by efficiently growing a biocompatible ZrO2 ceramic layer on defective enamel through controllable hydrolysis of Zr4+ in oral‐tolerable conditions. Detailed analysis of the grown layer indicates that the grown ZrO2 ceramic is amorphous without grain boundary and dislocation, which endows the repaired enamel with natural enamel comparable mechanical performance (modulus ≈82.5 GPa and hardness ≈5.2 GPa). Besides, the strong chemical connection between unsaturated coordinated Zr4+ in amorphous structure and PO43− greatly strengthen the crystalline–amorphous interface of the repaired enamel to endure the long‐time mastication damage. Moreover, these ZrO2 ceramics provide hydrophilic, electronegative, and smooth surfaces to resist the adhesion and proliferation of cariogenic bacteria. The hybrid amorphous–crystalline interface design with advantages in biomechanical compatibility would promote the evolution of a variety of cutting‐edge functional materials for medical and engineering application.

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“…The hydrophilic nature of copolymers facilitates water sorption from the oral environment when exposed to saliva and hydrated dentine. The absorbed moisture can alter the properties of adhesive resin [24]. The temperature at which the process is carried out is very important.…”

Section: Resultsmentioning

confidence: 99%

In Vitro Behaviour of New Experimental Adhesive Systems

Sucală¹,

Saroși²,

Popa³

et al. 2018

Studia UBB Chemia

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Bonding of current adhesives to dentin is usually through the formation of the interfacial hybrid layer between adhesives and dentin. Intertubular and intra-tubular resin infiltration leads to an increase of the quality regarding the dentinal adhesion. The aim of this study is in vitro testing of new experimental adhesives in comparison with commercial adhesive, regarding sorption and solubility as well as to investigate molecular chemical features of the adhesive/dentin interfaces. We used 4 experimental adhesives systems A1, A2, A3, A4 and IBond® (Heraeus) as reference material. Organic phase adhesive system consists of a mixture of monomers. As filler for these systems, besides hydroxyapatite, we used TiO2 nanoparticles. FTIR spectroscopy was used to investigate molecular chemical features of the adhesive/dentin interfaces. The obtained data show the main advantages and disadvantages of the tested adhesive systems. The best values of water sorption and solubility both in water and artificial saliva present A2 and A3 adhesives.

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High performance dental resin composites with hydrolytically stable monomers

Cited by 80 publications

References 59 publications

Degree of conversion and depth of cure of Ivocerin containing photo-polymerized resin luting cement in comparison to conventional luting agents

Degree of conversion and depth of cure of Ivocerin containing photo-polymerized resin luting cement in comparison to conventional luting agents

Enamel Repair with Amorphous Ceramics

In Vitro Behaviour of New Experimental Adhesive Systems

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