keyword
MENU ▼
Read by QxMD icon Read
search

bioceramic

keyword
https://www.readbyqxmd.com/read/29328519/surface-modification-using-the-biomimetic-method-in-alumina-zirconia-porous-ceramics-obtained-by-the-replica-method
#1
André D R Silva, Willian R Rigoli, Denise Osiro, Daphne C R Mello, Luana M R Vasconcellos, Anderson O Lobo, Eliria M J A Pallone
The modification of biomaterials approved by the Food and Drug Administration could be an alternative to reduce the period of use in humans. Porous bioceramics are widely used as support structures for bone formation and repair. This composite has essential characteristics for an implant, including good mechanical properties, high chemical stability, biocompatibility and adequate aesthetic appearance. Here, three-dimensional porous scaffolds of Al2 O3 containing 5% by volume of ZrO2 were produced by the replica method...
January 12, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29325202/interfacial-mineral-fusion-and-tubule-entanglement-as-a-means-to-harden-a-bone-augmentation-material
#2
Erik A B Hughes, Sophie C Cox, Megan E Cooke, Owen G Davies, Richard L Williams, Thomas J Hall, Liam M Grover
A new bone augmenting material is reported, which is formed from calcium-loaded hydrogel-based spheres. On immersion of these spheres in a physiological medium, they become surrounded with a sheath of precipitate, which ruptures due to a build-up in osmotic pressure. This results in the formation of mineral tubes that protrude from the sphere surface. When brought into close contact with one another, these spheres become fused through the entanglement and subsequent interstitial mineralization of the mineral tubules...
January 11, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29299875/physico-mechanical-properties-of-ha-tcp-pellets-and-their-three-dimensional-biological-evaluation-in-vitro
#3
Nurulain 'Atikah Kamalaldin, Mariatti Jaafar, Saiful Irwan Zubairi, Badrul Hisham Yahaya
The use of bioceramics, especially the combination of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP), as a three-dimensional scaffold in bone engineering is essential because together these elements constitute 60% of the bone content. Different ratios of HA and β-TCP were previously tested for their ability to produce suitable bioceramic scaffolds, which must be able to withstand high mechanical load. In this study, two ratios of HA/TCP (20:80 and 70:30) were used to create pellets, which then were evaluated in vitro to identify any adverse effects of using the material in bone grafting...
January 4, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29274589/exogenous-vegf-introduced-by-bioceramic-composite-materials-promotes-the-restoration-of-bone-defect-in-rabbits
#4
Hedong Yu, Xiantao Zeng, Cai Deng, Congyu Shi, Jun Ai, Weidong Leng
This study aimed to investigate the effect of exogenous vascular endothelial growth factor (VEGF) introduced by bioceramic composite materials on jawbone defect. Rabbits were randomly divided into four groups: control, sham, model, and stent. In the model group, holes of jawbone defect were created through surgery. In the stent group, rabbits with jawbone defect were treated with polyether ketone (PEK)/biphasic bioceramic ((PEK-BBC)) composite materials encapsulating VEGF. At 4, 8, and 16 weeks post-operation, HE and Van Gieson staining of jawbones were performed to characterize the repair status of the bone defect...
December 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29259360/influence-of-root-canal-obturation-using-gutta-percha-with-three-different-sealers-on-root-reinforcement-of-endodontically-treated-teeth-an-in-vitro-comparative-study-of-mandibular-incisors
#5
Pravin Patil, Kulwinder Singh Banga, Ajinkya M Pawar, Sandeep Pimple, Raguram Ganeshan
Aim: The purpose of this in vitro study was to evaluate the vertical force required to fracture mandibular incisor teeth, obturated using gutta-percha with three different sealers. Materials and Methods: Seventy-five extracted mandibular incisors with intact and fully formed apices, exhibiting single root and canal were acquired. The teeth were decoronated obtaining a root segments of 15 mm and were divided into five groups (n = 15). Group 1: left uninstrumented and unfilled (negative control)...
July 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29222837/low-melt-bioactive-glass-reinforced-3d-printing-akermanite-porous-cages-with-highly-improved-mechanical-properties-for-lumbar-spinal-fusion
#6
Xiurong Ke, Lei Zhang, Xianyan Yang, Juncheng Wang, Chen Zhuang, Zhouwen Jin, An Liu, Tengfei Zhao, Sanzhong Xu, Changyou Gao, Zhongru Gou, Guojing Yang
Although great strides have been made in medical technology, low back/neck pain and intervertebral disc degeneration initiated from disc degenerative disease remains a clinical challenge. Within the field of regenerative medicine therapy, we have sought to improve the biomechanical transformation of spinal fusion procedures conducted using biodegradable porous implants. Specifically, we have focused on developing mechanically strong bioceramic cages for spinal fusion and functional recovery. Herein we fabricated the akermanite (AKE) ceramic-based porous cages using low-melting bioactive glass (BG) and 3D printing technology...
December 9, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29197578/magnesium-based-bioceramics-in-orthopedic-applications
#7
REVIEW
Maryam Nabiyouni, Theresa Brückner, Huan Zhou, Uwe Gbureck, Sarit B Bhaduri
Magnesium ions are directly involved in numerous biological mechanisms; for example, they play an important part in the regulation of ion channels, DNA stabilization, enzyme activation and stimulation of cell growth and proliferation. This alkaline earth metal has gained great popularity in orthopedic applications in recent years. Magnesium-based bioceramics include a large group of magnesium containing compounds such as oxides, phosphates and silicates, that are involved in orthopedic applications like bone cements, bone scaffolds or implant coatings...
November 29, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29186932/ionic-substitutions-in-non-apatitic-calcium-phosphates
#8
REVIEW
Aleksandra Laskus, Joanna Kolmas
Calcium phosphate materials (CaPs) are similar to inorganic part of human mineralized tissues (i.e., bone, enamel, and dentin). Owing to their high biocompatibility, CaPs, mainly hydroxyapatite (HA), have been investigated for their use in various medical applications. One of the most widely used ways to improve the biological and physicochemical properties of HA is ionic substitution with trace ions. Recent developments in bioceramics have already demonstrated that introducing foreign ions is also possible in other CaPs, such as tricalcium phosphates (amorphous as well as α and β crystalline forms) and brushite...
November 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29180865/fabrication-of-large-pore-mesoporous-ca-si-based-bioceramics-for-bone-regeneration
#9
Deliang Zeng, Xingdi Zhang, Xiao Wang, Lingyan Cao, Ao Zheng, Jiahui Du, Yongsheng Li, Qingfeng Huang, Xinquan Jiang
Our previous study revealed that mesoporous Ca-Si-based materials exhibited excellent osteoconduction because dissolved ions could form a layer of hydroxycarbonate apatite on the surface of the materials. However, the biological mechanisms underlying bone regeneration were largely unknown. The main aim of this study was to evaluate the osteogenic ability of large-pore mesoporous Ca-Si-based bioceramics (LPMSCs) by alkaline phosphatase assay, real-time PCR analysis, von Kossa, and alizarin red assay. Compared with large-pore mesoporous silica (LPMS), LPMSCs had a better effect on the osteogenic differentiation of dental pulp cells...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29167707/solubility-and-ph-of-bioceramic-root-canal-sealers-a-comparative-study
#10
Claudio Poggio, Alberto Dagna, Matteo Ceci, Maria-Vittoria Meravini, Marco Colombo, Giampiero Pietrocola
Background: This study compared the solubility and the pH of different root canal sealers in vitro. Material and Methods: BioRoot™RCS, TotalFill BC Sealer, MTA Fillapex, SealapexTM, AH Plus, EasySeal, Pulp Canal Sealer™ and N2 were tested. Similar specimens were prepared using ring molds with an internal diameter of 20 ± 0,1 mm and a height of 1,5 ± 0,1 mm and digitally weighted to register the mass of each specimen before and after immersion in distilled water...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29158833/human-umbilical-cord-mscs-as-new-cell-sources-for-promoting-periodontal-regeneration-in-inflammatory-periodontal-defect
#11
Fengqing Shang, Shiyu Liu, Leiguo Ming, Rong Tian, Fang Jin, Yin Ding, Yongjie Zhang, Hongmei Zhang, Zhihong Deng, Yan Jin
Human periodontal ligament stem cells (hPDLSCs) transplantation represents a promising approach for periodontal regeneration; however, the cell source is limited due to the invasive procedure required for cell isolation. As human umbilical cord mesenchymal stem cells (hUCMSCs) can be harvested inexpensively and inexhaustibly, here we evaluated the regenerative potentials of hUCMSCs as compared with hPDLSCs to determine whether hUCMSCs could be used as new cell sources for periodontal regeneration. Methods The characteristics of hUCMSCs, including multi-differentiation ability and anti-inflammatory capability, were determined by comparison with hPDLSCs...
2017: Theranostics
https://www.readbyqxmd.com/read/29156629/reconstruction-of-craniomaxillofacial-bone-defects-using-tissue-engineering-strategies-with-injectable-and-non-injectable-scaffolds
#12
REVIEW
Bipin Gaihre, Suren Uswatta, Ambalangodage C Jayasuriya
Engineering craniofacial bone tissues is challenging due to their complex structures. Current standard autografts and allografts have many drawbacks for craniofacial bone tissue reconstruction; including donor site morbidity and the ability to reinstate the aesthetic characteristics of the host tissue. To overcome these problems; tissue engineering and regenerative medicine strategies have been developed as a potential way to reconstruct damaged bone tissue. Different types of new biomaterials; including natural polymers; synthetic polymers and bioceramics; have emerged to treat these damaged craniofacial bone tissues in the form of injectable and non-injectable scaffolds; which are examined in this review...
November 20, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29123140/effects-of-atomic-level-nano-structured-hydroxyapatite-on-adsorption-of-bone-morphogenetic-protein-7-and-its-derived-peptide-by-computer-simulation
#13
Qun Wang, Menghao Wang, Xiong Lu, Kefeng Wang, Liming Fang, Fuzeng Ren, Guoming Lu
Hydroxyapatite (HA) is the principal inorganic component of bones and teeth and has been widely used as a bone repair material because of its good biocompatibility and bioactivity. Understanding the interactions between proteins and HA is crucial for designing biomaterials for bone regeneration. In this study, we evaluated the effects of atomic-level nano-structured HA (110) surfaces on the adsorption of bone morphogenetic protein-7 (BMP-7) and its derived peptide (KQLNALSVLYFDD) using molecular dynamics and density functional theory methods...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29098767/silicon-bioceramic-loaded-with-vancomycin-stimulates-bone-tissue-regeneration
#14
Angel Manchón, Mohammad H Alkhraisat, Carmen Rueda-Rodriguez, Concepción Pintado, J C Prados-Frutos, Jesus Torres, Enrique Lopez Cabarcos
Porous ceramics doped with silicon and pure β-TCP were analyzed in terms of internal microstructure, cell behavior, and the percentage of newly formed bone. Additionally the materials were tested to determine which of the two had better properties to load and release vancomycin hydrochloride. Internal pore distribution and porosity were determined through high pressure mercury porosimetry and the specific surface area was measured by the Brunauer Emmet-Teller method. The proliferation and viability of the human osteoblast-like cell line MG-63 was studied to validate both materials...
November 3, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29080076/evaluation-of-the-interface-between-gutta-percha-and-two-types-of-sealers-using-scanning-electron-microscopy-sem
#15
Mohamed Eltair, Vinay Pitchika, Reinhard Hickel, Jan Kühnisch, Christian Diegritz
OBJECTIVES: The aim of the present study was to evaluate the adaptation of a calcium silicate bioceramic (BC) sealer with either BC or conventional gutta-percha compared with that of AH Plus sealer in different root canal sections. MATERIALS AND METHODS: Seventy-two extracted mandibular premolars were divided randomly into six groups. After standardised chemomechanical preparation, four groups were obturated with the BC sealer and BC gutta-percha or conventional gutta-percha, and the other two groups were obturated with AH Plus sealer and conventional gutta-percha either in lateral compaction or in a single cone technique...
October 27, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29066420/cu-doping-of-calcium-phosphate-bioceramics-from-mechanism-to-the-control-of-cytotoxicity
#16
Sandrine Gomes, Charlotte Vichery, Stéphane Descamps, Hervé Martinez, Amandeep Kaur, Aurélie Jacobs, Jean-Marie Nedelec, Guillaume Renaudin
In this study, the Cu-doping mechanism of Biphasic Calcium Phosphate (BCP) was thoroughly investigated, as was its ionic release behavior, in order to elucidate cytotoxicity features of these bioceramics. BCP are composed of hydroxyapatite (Ca10(PO4)6(OH)2) and β-TCP (Ca3(PO4)2). The two phases present two different doping mechanisms. Incorporation into the β-TCP structure is achieved at around 700 °C thanks to a substitution mechanism leading to the Cu-doped Ca3-xCux(PO4)2 compound. Incorporation into the HAp structure is achieved thanks to an interstitial mechanism that is limited to a Cu-poor HAp phase for temperatures below 1100 °C (Ca10Cux(PO4)6(OH)2-2xO2x with x < 0...
October 21, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29061357/saving-natural-teeth-intentional-replantation-protocol-and-case-series
#17
Derek Grzanich, Gabriella Rizzo, Renato Menezes Silva
INTRODUCTION: Intentional replantation is a reliable and predictable treatment for cases in which nonsurgical endodontic retreatment failed or is impractical and endodontic surgery is hampered because of anatomic limitations. METHODS AND RESULTS: This article presents a protocol for intentional replantation illustrated with some interesting cases. The cases presented here are from patients (average age, 61 years) with no contributing medical history. The cases are molars with previous failed endodontic treatment/retreatment and diagnosed with apical periodontitis...
October 20, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29061354/odontogenic-potential-of-parathyroid-hormone-related-protein-107-111-alone-or%C3%A2-in%C3%A2-combination-with-mineral-trioxide-aggregate%C3%A2-in-human-dental-pulp-cells
#18
Jeong-Won Han, Bin-Na Lee, Se-Min Kim, Jeong-Tae Koh, Kyung-San Min, Yun-Chan Hwang
INTRODUCTION: Parathyroid hormone-related protein plays an important role in bone remodeling. Its N-terminal domain parathyroid hormone-related protein (107-111) is called osteostatin (OST). OST has demonstrated osteogenic potential when combined with biomaterials such as hydroxyapatite or bioceramics. However, the odontogenic potential of OST has not yet been reported. Therefore, the aim of this study was to determine whether OST has an odontogenic effect or a synergistic effect with mineral trioxide aggregate (MTA) in human dental pulp cells (hDPCs) and to examine the underlying signaling mechanisms involved in OST-mediated odontogenic differentiation...
October 20, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29042721/clinical-and-radiographic-evaluation-of-citric-acid-based-nano-hydroxyapatite-composite-graft-in-the-regeneration-of-intrabony-defects-a-randomized-controlled-trial
#19
Chaurasia Priya Dayashankar, P C Deepika, Basavarajaiah Siddaramaiah
BACKGROUND: Conventional periodontal therapy with various bone grafts has limited scope and the results are not predictable. To improve their utility, the hybridization of bioceramics and biodegradable polymers has been widely adopted to reform the mechanical properties of bone grafts. One such biodegradable polymer is POC (Poly 1,8 octanediol). Secondly, citric acid is considered as the key material in bone mineralization, which is related to the overall stability, strength and fracture resistance of bone...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29022137/effect-of-different-endodontic-sealers-and-time-of-cementation-on-push-out-bond-strength-of-fiber-posts
#20
Danielle Araújo Vilas-Boas, Renata Grazziotin-Soares, Diego Machado Ardenghi, José Bauer, Patrícia Oliveira de Souza, George Táccio de Miranda Candeiro, Etevaldo Matos Maia-Filho, Ceci Nunes Carvalho
OBJECTIVES: This study aims to evaluate the effect of different endodontic sealers (epoxy resin, eugenol, and bioceramic/calcium silicate-based) and the time of cementation (immediately or 7 days after canal obturation) on the bond strength of a fiberglass post cemented with RelyX™ ARC. MATERIAL AND METHODS: Eighty-four premolars were instrumented and divided into groups (n = 12) according to the sealer and the time of post cementation: Endofill (EN), Endosequence BC Sealer (BC), and AH Plus (AH) had immediately fiber post cementation; EN7, BC7, and AH7 had post cementation after 7 days; and control group (C) had fiber post cementation without endodontic sealer...
October 11, 2017: Clinical Oral Investigations
keyword
keyword
110957
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"