Enhanced mechanical properties and osseointegration features of CaNb2O6–PNb9O25–Ca3(PO4)2 triphasic nanostructured bioceramics derived by optimised sinterization of Nb2O5 and natural hydroxyapatite-β-tricalcium phosphate

Bonadio, T. G. M.; Fiorentin, E.R.; Candido, Aline Gabriela; Miyahara, Ricardo Yoshimitsu; Freitas, V. F.; Kiyochi, H.J.; Hernandes, Luzmarina; Rosso, J. M.; Burato, J.A.; Santos, I. A.; Baesso, Mauro Luciano; Weinand, W. R.

doi:10.1016/j.ceramint.2020.02.054

Cited by 11 publications

(6 citation statements)

References 35 publications

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“…The increase in the hardness was directly proportional to the sintering temperature. This has also been confirmed by several previous studies [50][51][52][53][54]. However, Figure 4b-f proves that with a higher sintering temperature, grain growth will also occur, which can potentially reduce the strength of the sintered body if the sintering temperature exceeds 1200 °C.…”

Section: Micro Hardnesssupporting

confidence: 88%

Physical and Mechanical Properties of Hydroxyapatite Ceramics With a Mixture of Micron and Nano-Sized Powders: Optimising the Sintering Temperatures

Indra¹

2021

Ceramics - Silikaty

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In order to determine the optimum sintering temperatures of hydroxyapatite ceramic sintered bodies, while maintaining high physical and mechanical properties, pellet-shaped hydroxyapatite (HA) samples were prepared by controlling micron-and nano-sized powders. Determining the optimum sintering temperature aims to avoid changes in the HA phase and reduce excessive grain growth at too high temperatures. The samples were made by mixing micron-and nano-sized HA powders at a ratio of 80:20 wt. % and adding polyvinyl alcohol (PVA) of 10 wt. % as a binder. Green bodies were made using the uniaxial pressing method under a pressure of 200 MPa. The initial heating was carried out at a temperature of 700 °C for 1 h to remove the PVA, followed by a sintering process performed at temperatures ranging from 1000 °C to 1200 °C with a holding time of 2 h. The results showed that the optimum sintering temperatures ranged from 1150 °C to 1200 °C, with no significant linear shrinkage occurring at those temperatures. In the microstructural analysis, a significant decrease occurred in the number of pores in the sintered bodies at a temperature of 1200 °C. The mechanical properties are maintained at a high level at sintering temperatures of 1150 °C and 1200 °C, i.e., Vickers hardness values of 4.40 GPa and 5.67 GPa, respectively.

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Section: Micro Hardnesssupporting

confidence: 88%

Physical and Mechanical Properties of Hydroxyapatite Ceramics With a Mixture of Micron and Nano-Sized Powders: Optimising the Sintering Temperatures

Indra¹

2021

Ceramics - Silikaty

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“…The human body is unable to regenerate extensive defects because of the lack of an extracellular matrix to fill these defects, although bone tissue is formed by a continuous organic phase reinforced with nonstoichiometric HAp crystals. The natural calcium phosphates have disadvantages, such as small crystals and low crystallinity, in addition to significant amounts of foreign ions and poor mechanical properties, which are limitations that need to be overcome for biomedicine applications. − …”

Section: Biomaterialsmentioning

confidence: 99%

Polysaccharide Hydroxyapatite (Nano)composites and Their Biomedical Applications: An Overview of Recent Years

Costa,

Félix Farias,

Silva-Filho

et al. 2024

ACS Omega

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Hydroxyapatite can combine with polysaccharide originating biomaterials with special applications in the biomedical field. In this review, the synthesis of (nano)composites is discussed, focusing on natural polysaccharides such as alginate, chitosan, and pectin. In this way, advances in recent years in the development of preparing materials are revised and discussed. Therefore, an overview of the recent synthesis and applications of polyssacharides@ hydroxyapatites is presented. Several studies based on chitosan@ hydroxyapatite combined with other inorganic matrices are highlighted, while pectin@hydroxyapatite is present in a smaller number of reports. Biomedical applications as drug carriers, adsorbents, and bone implants are discussed, combining their dependence with the nature of interactions on the molecular scale and the type of polysaccharides used, which is a relevant aspect to be explored.

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“…An increase in the number of 2 wt% niobium silicate inorganic particles may be responsible for the increase in the immediate shear bond strength. The amorphous Nb-O bond is a key factor in mineral formation [116,117]. After initial ion release, amorphous Nb can promote calcium and phosphate adsorption at the media interface [118].…”

Section: Effect Of Calcium Silicate Fillers On the Remineralization A...mentioning

confidence: 99%

Synergistic effect of ion-releasing fillers on the remineralization and mechanical properties of resin–dentin bonding interfaces

Xie,

Chen,

Yao

et al. 2023

Biomed. Phys. Eng. Express

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In modern restorative dentistry, adhesive resin materials are vital for achieving minimally invasive, esthetic, and tooth-preserving restorations. However, exposed collagen fibers are found in the hybrid layer of the resin-dentin bonding interface due to incomplete resin penetration. As a result, the hybrid layer is susceptible to attack by internal and external factors such as hydrolysis and enzymatic degradation, and the durability of dentin bonding remains limited. Therefore, efforts have been made to improve the stability of the resin-dentin interface and achieve long-term clinical success. New ion-releasing adhesive resin materials are synthesized by introducing remineralizing ions such as calcium and phosphorus, which continuously release mineral ions into the bonding interface in resin-bonded restorations to achieve dentin biomimetic remineralization and improve bond durability. As an adhesive resin material capable of biomimetic mineralization, maintaining excellent bond strength and restoring the mechanical properties of demineralized dentin is the key to its function. This paper reviews whether ion-releasing dental adhesive materials can maintain the mechanical properties of the resin-dentin bonding interface by supplementing the various active ingredients required for dentin remineralization from three aspects: phosphate, silicate, and bioactive glass.

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Enhanced mechanical properties and osseointegration features of CaNb2O6–PNb9O25–Ca3(PO4)2 triphasic nanostructured bioceramics derived by optimised sinterization of Nb2O5 and natural hydroxyapatite-β-tricalcium phosphate

Cited by 11 publications

References 35 publications

Physical and Mechanical Properties of Hydroxyapatite Ceramics With a Mixture of Micron and Nano-Sized Powders: Optimising the Sintering Temperatures

Physical and Mechanical Properties of Hydroxyapatite Ceramics With a Mixture of Micron and Nano-Sized Powders: Optimising the Sintering Temperatures

Polysaccharide Hydroxyapatite (Nano)composites and Their Biomedical Applications: An Overview of Recent Years

Synergistic effect of ion-releasing fillers on the remineralization and mechanical properties of resin–dentin bonding interfaces

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