Preparation and characterization of bioactive composites and fibers for dental applications

Qidwai, Maryam; Sheraz, Muhammad Ali; Ahmed, Sofia; Al-Khuraif, Abdulaziz; Rehman, Ihtesham Ur

doi:10.1016/j.dental.2014.05.022

Cited by 16 publications

(8 citation statements)

References 21 publications

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“…As shown in Fig. 3b, the XRD spectrum of pure PU cement showed only an envelope spectrum with a broad peak centered at 20.1°, indicating the weak crystallized nature of the polymer [42]. On the other side, n-HA showed some sharp peaks, which indicated well crystallinity that were in good agreement with the JCPDS 09-0432.…”

Section: Physiochemical Properties Of the Cementssupporting

confidence: 76%

Effect of Antibacterial Enoxacin on the Properties of Injectable Nano-hydroxyapatite/Polyurethane Cement for Bone Repairing

et al. 2022

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Biomaterial-associated infection (BAI) is a kind of serious post-operative complication in orthopaedic surgery. Antibiotic-loaded bone cement shines a light on BAI prevention for convenient manipulation and complex filling. To this aim, we designed an antibacterial bone cement based on Nano-hydroxyapatite/Polyurethane (PUHA) loading with antibiotic Enoxacin (EN). The distinct shear-thinning behavior of the prepolymers was observed, indicating a good injectability. The PUHA bone cement possessed a suitable curing speed, and the addition of EN might slightly expedite the curing process and enhance the mechanical properties. The EN release profile indicated that the EN-loaded bone cement could reach the minimum inhibitory concentration in 2 h, and sustainedly released EN for almost 8 days, exhibiting an antibacterial delivery potential. Antibacterial test further confirmed the antibacterial ability of EN-loaded bone cement is in a dose-dependent manner. However, the osteogenic performance of drug-loaded bone cement with high dosage is not as good as antibacterial activity. When the EN concentration of antibacterial cement was lower than 32 μg⋅mL−1, the proliferation and osteogenic differentiation of rat mesenchymal stem cells could be significantly promoted. Overall, this study verified the potential of the EN-loaded PUHA bone cement in anti-infection and osteogenesis for bone repairing.

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Section: Physiochemical Properties Of the Cementssupporting

confidence: 76%

Effect of Antibacterial Enoxacin on the Properties of Injectable Nano-hydroxyapatite/Polyurethane Cement for Bone Repairing

et al. 2022

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“…The XRD patterns of 10 HA/PU and 20 HA/PU still exhibit their individual peaks, except for a relative decrease in the peak intensity. The results make it clear that the composite is composed of HA and PU, and their initial composition and chemical structure are maintained in the composite foams [30,31,32].…”

Section: Resultsmentioning

confidence: 99%

Elastomeric Polyurethane Foams Incorporated with Nanosized Hydroxyapatite Fillers for Plastic Reconstruction

Lin

Mei

et al. 2018

Nanomaterials

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Plastic surgeons have long searched for the ideal materials to use in craniomaxillofacial reconstruction. The aim of this study was to obtain a novel porous elastomer based on designed aliphatic polyurethane (PU) and nanosized hydroxyapatite (n-HA) fillers for plastic reconstruction. The physicochemical properties of the prepared composite elastomer were characterized by infrared spectroscopy (IR), X-ray diffraction (XRD), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), thermal analysis, mechanical tests, and X-ray photoelectron spectroscopy (XPS). The results assessed by the dynamic mechanical analysis (DMA) demonstrated that the n-HA/PU compounded foams had a good elasticity, flexibility, and supporting strength. The homogenous dispersion of the n-HA fillers could be observed throughout the cross-linked PU matrix. The porous elastomer also showed a uniform pore structure and a resilience to hold against general press and tensile stress. In addition, the elastomeric foams showed no evidence of cytotoxicity and exhibited the ability to enhance cell proliferation and attachment when evaluated using rat-bone-marrow-derived mesenchymal stem cells (BMSCs). The animal experiments indicated that the porous elastomers could form a good integration with bone tissue. The presence of n-HA fillers promoted cell infiltration and tissue regeneration. The elastomeric and bioactive n-HA/PU composite foam could be a good candidate for future plastic reconstruction.

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“…17 Cam dönüşüm sıcaklığı (T g ) bir polimerin sert cam benzeri safhadan lastik benzeri bir aşamaya geçtiği sıcaklıktır. 72 Kalorimetre ya bir ısı alışverişi sırasında (polimerizasyon gibi) ya da non-izotermal bir durum gerçekleşirken (metallerin erimesi gibi) örnek ve boş referans arasındaki sıcaklık akışını ölçer. Dinamik ekzotermik reaksiyonlar için, aktif polimerizasyonlar gibi, izotermal deneyler sırasında materyalden açığa çıkan ısı reaksiyona giren vinil çift bağların miktarı ve polimerizasyon derecesiyle ilişkilendirilebilir.…”

Section: Di̇feransi̇yal Tarama Kalori̇metresi̇ (Di̇fferenti̇al Scanni̇ng Calunclassified

Analysis Methods Regarding the Polymerization Properties of Composite Resins

Ağaccıoğlu¹,

Aytaç²

2019

Turkiye Klinikleri J Dental Sci

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Preparation and characterization of bioactive composites and fibers for dental applications

Cited by 16 publications

References 21 publications

Effect of Antibacterial Enoxacin on the Properties of Injectable Nano-hydroxyapatite/Polyurethane Cement for Bone Repairing

Effect of Antibacterial Enoxacin on the Properties of Injectable Nano-hydroxyapatite/Polyurethane Cement for Bone Repairing

Elastomeric Polyurethane Foams Incorporated with Nanosized Hydroxyapatite Fillers for Plastic Reconstruction

Analysis Methods Regarding the Polymerization Properties of Composite Resins

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