Alkaline nanoparticle coatings improve resin bonding of 10-methacryloyloxydecyldihydrogenphosphate-conditioned zirconia

Qian, Ma; Lu, Zheng; Chen, Chen; Zhang, Huaiqin; Xie, Haifeng

doi:10.2147/ijn.s116006

Cited by 24 publications

(21 citation statements)

References 18 publications

(38 reference statements)

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“…The increase in hydroxyl groups provided by zirconium hydroxide contributed to the improved chemical affinity of MDP for zirconia. 35 These findings are consistent with previous studies, suggesting that bonding of MDP and zirconia is enhanced by zirconium hydroxide. 29 Our NMR analysis also showed that prior Zr(OH) 4 coating positively impacted MDP bonding with zirconia.…”

Section: Discussionsupporting

confidence: 93%

“…Our NMR and XPS analyses indicated that Zr(OH) 4 enhanced bonding of MDP to zirconia, which is consistent with previous findings. 35 Moreover, previous experiments have shown that the addition of 10 wt% MDP-conditioned Zr(OH) 4 -coated zirconia does not significantly improve the flexural strength of resin composites. 22 In our study, we controlled the concentration of zirconium chloride used to avoid the influence of excess zirconium hydroxide on the properties of resin composites.…”

Section: Discussionmentioning

confidence: 98%

“…It creates an alkaline microenvironment that promotes the bonding of zirconia to matrix. 35 Therefore, we coated Zr(OH) 4 on the surface of zirconia in our experiments. We first verified that Zr-O-P bonds existed on the surface of MDP-conditioned zirconia fillers using XPS, suggesting chemical affinity of MDP to the zirconia filler surface, which provided zirconia fillers the capacity to be polymerized with bisphenol Aglycidyl dimethacrylate.…”

Section: Discussionmentioning

confidence: 99%

“…The 1 H MAS NMR spectrum ( Figure 3A and C) showed sharp narrow resonance at 6.1 ppm, 5.5 ppm, 4.2 ppm, 1.9 ppm, 1.7 ppm, and 1.4 ppm, attributed to the methacryloyloxy group of the MDP monomer. 35 The broad resonance at 5.0 ppm was attributed to the Zr-OH groups, which adsorbed water molecules from the hydrated surface layer around the zirconia particles. 28 Weak broad resonance around 6.0 ppm was attributed to OH-groups, including the P-OH bonds of MDP, 29 indicating that zirconia strongly interacts with MDP, even after acetone washes.…”

Section: Discussionmentioning

confidence: 99%

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<p>Surface Treatment Of Nanozirconia Fillers To Strengthen Dental Bisphenol A–Glycidyl Methacrylate–Based Resin Composites</p>

Dai¹,

Chen²,

Yang³

et al. 2019

IJN

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Purpose: To investigate the effects of nanozirconia fillers conditioned with 10-methacryloyloxydecyl dihydrogen phosphate (MDP) with or without zirconium hydroxide precoating on bending strength, Vickers hardness, and translucence of dental resin composites. Methods: We obtained nanozirconia fillers coated with different concentrations of Zr(OH) 4 using wet-chemical synthesis. We analyzed coating quality by observing electron-diffraction patterns using transmission electron microscopy. We conditioned zirconia fillers, with or without prior Zr(OH) 4-coating, using MDP-containing primers and evaluated the formation of chemical bonds using nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS). We then performed three-point bending-strength tests, Weibull analysis, Vickers hardness, and translucence-parameter analysis with or without addition of different concentrations of zirconia using untreated zirconia fillers as controls. Results: We achieved desirable Zr(OH) 4 coating using 5 mmol/L zirconium chloride. NMR and XPS analysis detected stronger Zr-O-P peaks on MDP-conditioned zirconia fillers with prior Zr(OH) 4-coating compared with MDP-conditioned fillers alone, suggesting that MDP bonding with zirconia was enhanced by zirconium hydroxide. Our three-point bending-strength tests revealed that increasing levels of untreated zirconia fillers decreased the three-point bending strength of the resin composites, while MDP-conditioned zirconia fillers with or without prior Zr(OH) 4 coating improved three-point bending strengths. Adding 5 wt% and 7.5 wt% MDP-conditioned zirconia fillers with prior Zr(OH) 4 coating achieved the highest three-point bending strength. Furthermore, addition of zirconia fillers decreased the translucence of silica-based resin composites. Conclusion: MDP conditioning with prior Zr(OH) 4 coating is recommended for treating nanozirconia fillers of resin composites.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

<p>Surface Treatment Of Nanozirconia Fillers To Strengthen Dental Bisphenol A–Glycidyl Methacrylate–Based Resin Composites</p>

Dai¹,

Chen²,

Yang³

et al. 2019

IJN

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“…Pilo et al 22. and Qian et al 23. assessed the chemical bonding by Fourier transform infrared spectroscopy (FTIR).…”

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confidence: 99%

Chemical interaction mechanism of 10-MDP with zirconia

Nagaoka

Feitosa

Tamada

et al. 2017

Sci Rep

179

111

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Currently, the functional monomer 10-methacryloyloxy-decyl-dihydrogen-phosphate (10-MDP) was documented to chemically bond to zirconia ceramics. However, little research has been conducted to unravel the underlying mechanisms. This study aimed to assess the chemical interaction and to demonstrate the mechanisms of coordination between 10-MDP and zirconium oxide using 1H and 31P magic angle spinning (MAS) nuclear magnetic resonance (NMR) and two dimensional (2D) 1H → 31P heteronuclear correlation (HETCOR) NMR. In addition, shear bond-strength (SBS) tests were conducted to determine the effect of 10-MDP concentration on the bonding effectiveness to zirconia. These SBS tests revealed a 10-MDP concentration-dependent SBS with a minimum of 1-ppb 10-MDP needed. 31P-NMR revealed that one P-OH non-deprotonated of the PO3H2 group from 10-MDP chemically bonded strongly to zirconia. 1H-31P HETCOR NMR indicated that the 10-MDP monomer can be adsorbed onto the zirconia particles by hydrogen bonding between the P=O and Zr-OH groups or via ionic interactions between partially positive Zr and deprotonated 10-MDP (P-O−). The combination of 1H NMR and 2D 1H-31P HETCOR NMR enabled to describe the different chemical states of the 10-MDP bonds with zirconia; they not only revealed ionic but also hydrogen bonding between 10-MDP and zirconia.

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Advanced Collagen‐Based Biomaterials for Regenerative Biomedicine

Lin

Zhang

Macedo

et al. 2018

Adv Funct Materials

255

173

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In recent decades, collagen is one of the most versatile biomaterials used in biomedical applications, mostly due to its biomimetic and structural composition in the extracellular matrix (ECM). Several attempts are proposed for designing innovative collagen-based biomaterials and applying them in tissue regeneration. The regeneration of different tissues is prompted by different types and diverse physical forms of collagen-based biomaterials prepared by various methods. Based on such concepts, the source, structure, and classification of collagen are briefly introduced in this review. Here, the commonly used physical forms and modification methods of collagen-based biomaterials are reviewed, including hydrogels, scaffolds, and microspheres, followed by their applications in the regeneration of tissues and organs. Important proof-of-concept examples are described to demonstrate the outcomes on material characteristics, cellular reactions, and tissue regeneration. A concise assessment of the limitations that still exist and the developing trends in the future of collagen-based biomaterials are put forward.

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Alkaline nanoparticle coatings improve resin bonding of 10-methacryloyloxydecyldihydrogenphosphate-conditioned zirconia

Cited by 24 publications

References 18 publications

<p>Surface Treatment Of Nanozirconia Fillers To Strengthen Dental Bisphenol A–Glycidyl Methacrylate–Based Resin Composites</p>

<p>Surface Treatment Of Nanozirconia Fillers To Strengthen Dental Bisphenol A–Glycidyl Methacrylate–Based Resin Composites</p>

Chemical interaction mechanism of 10-MDP with zirconia

Advanced Collagen‐Based Biomaterials for Regenerative Biomedicine

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