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Dental Biomaterials

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https://www.readbyqxmd.com/read/28644556/sinus-augmentation-using-a-mini-pig-model-effect-of-ceramic-and-allogeneic-bone-biomaterials
#1
Cristiano Susin, Tiago Fiorini, Jaebum Lee, Rubens Moreno de Freitas, Hsien-Chung Chiu, Hari S Prasad, Amanda N Buxton, Ulf Me Wikesjö
BACKGROUND: Present clinical practice broadly relies on off-the-shelf allogeneic, xenogeneic or synthetic bone biomaterials in support of sinus augmentation. Also, recombinant human bone morphogenetic protein-2 in an absorbable collagen sponge carrier (rhBMP-2/ACS) has been shown to support clinically relevant bone formation when used to augment the maxillary sinus. OBJECTIVES: To evaluate local bone formation/dental implant osseointegration following implantation of two particulate bone biomaterials using the mini-pig sinus augmentation model...
June 23, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28643883/is-ridge-preservation-augmentation-at-periodontally-compromised-extraction-sockets-safe-a-retrospective-study
#2
Jung-Ju Kim, Heithem Ben Amara, Frank Schwarz, Hae-Young Kim, Jung-Won Lee, Ulf Me Wikesjö, Ki-Tae Koo
OBJECTIVES: This study aimed to evaluate the safety of ridge preservation/augmentation procedures when performed at compromised extraction sockets. METHODS: Patients subject to ridge preservation/augmentation at periodontally compromised sockets at Seoul National University Dental Hospital(SNUDH) were evaluated in a chart review. Tooth extractions due to acute infection were not included in our study as chronically formed lesions are the only lesions that can be detected from radiographic images...
June 23, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28642917/a-new-era-considering-inorganic-trace-elements-and-biological-activity-of-dental-biomaterials-angiogenic-activity
#3
Mohammad Ali Saghiri, Armen Asatourian, Franklin Garcia-Godoy, Nader Sheibani
No abstract text is available yet for this article.
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642517/green-dentistry-the-art-and-science-of-sustainable-practice
#4
P Mulimani
Dentistry is highly energy and resource intensive with significant environmental impact. Factors inherent in the profession such as enormous electricity demands of electronic dental equipment, voluminous water requirements, environmental effects of biomaterials (before, during and after clinical use), the use of radiation and the generation of hazardous waste involving mercury, lead etc have contributed towards this. With rising temperatures across the world due to global warming, efforts are being made worldwide to mitigate the effects of environmental damage by resorting to sustainability concepts and green solutions in a myriad of ways...
June 23, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28633093/fracture-resistance-of-ceramic-and-polymer-based-occlusal-veneer-restorations
#5
Majed Al-Akhali, Mohamed Sad Chaar, Adham Elsayed, Abdulaziz Samran, Matthias Kern
OBJECTIVES: The purpose of this in vitro study was to evaluate the influence of thermodynamic loading on the durability and fracture resistance behavior of occlusal veneers fabricated from different biomedical dental CAD/CAM materials. METHODS: The occlusal surfaces of 64 extracted premolars were prepared in the enamel layer and restored with occlusal veneers with a fissure/cusp thickness of 0.5/0.8mm made from four different dental CAD/CAM materials: group LD lithium disilicate (e...
June 13, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28621746/biocompatibility-analyses-of-al%C3%A2-o%C3%A2-treated-titanium-plates-tested-with-osteocyte-and-fibroblast-cell-lines
#6
Alberto Smargiassi, Jessika Bertacchini, Marta Checchi, Francesco Cavani, Marzia Ferretti, Carla Palumbo
Osseointegration of a titanium implant is still an issue in dental/orthopedic implants durable over time. The good integration of these implants is mainly due to their surface and topography. We obtained an innovative titanium surface by shooting different-in-size particles of Al₂O₃ against the titanium scaffolds which seems to be ideal for bone integration. To corroborate that, we used two different cell lines: MLO-Y4 (murine osteocytes) and 293 (human fibroblasts) and tested the titanium scaffolds untreated and treated (i...
June 16, 2017: Biomedicines
https://www.readbyqxmd.com/read/28595164/imaging-and-analysis-of-individual-cavitation-microbubbles-around-dental-ultrasonic-scalers
#7
N Vyas, H Dehghani, R L Sammons, Q X Wang, D M Leppinen, A D Walmsley
Cavitation is a potentially effective and less damaging method of removing biofilm from biomaterial surfaces. The aim of this study is to characterise individual microbubbles around ultrasonic scaler tips using high speed imaging and image processing. This information will provide improved understanding on the disruption of dental biofilm and give insights into how the instruments can be optimised for ultrasonic cleaning. Individual cavitation microbubbles around ultrasonic scalers were analysed using high speed recordings up to a million frames per second with image processing of the bubble movement...
May 24, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28561919/current-trends-and-future-perspectives-of-dental-pulp-capping-materials-a-systematic-review
#8
REVIEW
Wellington L O da Rosa, Alexandra R Cocco, Tiago M da Silva, Luana C Mesquita, Arthur Dias Galarça, Adriana F da Silva, Evandro Piva
To systematically review the literature to analyze the current trends and future perspectives of dental pulp capping materials through an analysis of scientific and technological data. This study is reported in accordance with the PRISMA Statement. Nine databases were screened: PubMed (MedLine), Lilacs, IBECS, BBO, Web of Science, Scopus, SciELO, Google Scholar, and The Cochrane Library. Additionally, the following patent applications were searched online in Questel Orbit (Paris, France), USPTO, EPO, JPO, INPI, and Patentscope databases...
May 31, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28544508/enhancement-of-plasma-protein-adsorption-and-osteogenesis-of-hmscs-by-functionalized-siloxane-coatings-for-titanium-implants
#9
Maria Martínez-Ibáñez, N Sanjeeva Murthy, Yong Mao, Julio Suay, Marilo Gurruchaga, Isabel Goñi, Joachim Kohn
A series of sol-gel derived silicon based coatings were developed to improve the osseointegration of commercial titanium dental implants. The osseointegration starts with a positive interaction between the implant surface and surrounding tissues, which is facilitated by the adsorption of plasma proteins onto the biomaterial surface immediately after implantation. It is likely that the enhancement of protein adsorption to titanium implants leads to a better implant/tissue integration. In addition, silica based biomaterials have been shown to promote osteoblast differentiation...
May 25, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28539292/-gelatin-alginate-hydrogel-scaffolds-prepared-by-3d-bioprinting-promotes-cell-adhesion-and-proliferation-of-human-dental-pulp-cells-in-vitro
#10
Hai-Yue Yu, Dan-Dan Ma, Bu-Ling Wu
OBJECTIVE: To evaluate the cytotoxicity of gelatin/alginate hydrogel scaffolds prepared by 3D bioprinting in human dental pulp cells (HDPCs) and compare the cell adhesion and proliferation of the cells seeded in the biomaterial using two different methods. METHODS: HDPCs isolated by tissue block culture and enzyme digestion were cultured and passaged. Gelatin/alginate hydrogel scaffolds were printed using a bioplotter, and the cytotoxicity of the aqueous extracts of the scaffold material was tested in the third passage of HDPCs using cell counting kit-8...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28537502/suitability-of-different-natural-and-synthetic-biomaterials-for-dental-pulp-tissue-engineering
#11
Kerstin M Galler, Ferdinand Brandl, Susanne Kirchhof, Matthias Widbiller, Andreas Eidt, Wolfgang Buchalla, Achim Goepferich, Gottfried Schmalz
Dental pulp tissue engineering is possible after insertion of pulpal stem cells combined with a scaffold into empty root canals. Commonly used biomaterials are collagen or poly(lactic) acid, which are either difficult to modify or to insert into such a narrow space. New hydrogel scaffolds with bioactive, specifically tailored functions could optimize the conditions to engineer dental pulp. Different synthetic and natural hydrogels were tested for their suitability to engineer dental pulp. Two functionalized modifications of polyethylene glycol were developed in this study and compared to a self-assembling peptide as well as to collagen and fibrin...
May 24, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28532101/sonochemical-synthesis-of-fructose-1-6-bisphosphate-dicalcium-porous-microspheres-and-their-application-in-promotion-of-osteogenic-differentiation
#12
Chao Qi, Ding Zhou, Ying-Jie Zhu, Tuan-Wei Sun, Feng Chen, Chang-Qing Zhang
Human bone mesenchymal stem cells (hBMSCs) have the ability to differentiate into bone and cartilage for clinical bone regeneration. Biomaterials with an innate ability to stimulate osteogenic differentiation of hBMSCs into bone and cartilage are considered attractive candidates for the applications in bone tissue engineering and regeneration. In this paper, we synthesized fructose 1,6-bisphosphate dicalcium (Ca2FBP) porous microspheres by the sonochemical method, and investigated the ability of Ca2FBP for the promotion of the osteogenic differentiation of hBMSCs...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28527850/complement-activation-by-pulp-capping-materials-plays-a-significant-role-in-both-inflammatory-and-pulp-stem-cells-recruitment
#13
Thomas Giraud, Pierre Rufas, Fanny Chmilewsky, Charlotte Rombouts, Jacques Dejou, Charlotte Jeanneau, Imad About
INTRODUCTION: The role of complement, especially through the C5a fragment, is well-known for the initiation of inflammation. Its involvement in regeneration has been shown more recently by the recruitment of mesenchymal stem cells. C5a can be produced locally by the pulp fibroblasts in response to injury or infection. This work aims to investigate the effect of different pulp capping biomaterials on complement activation and its possible influence on inflammatory and pulp stem cell recruitment...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28526091/a-pre-therapeutic-coating-for-medical-devices-that-prevents-the-attachment-of-candida-albicans
#14
Diego Vargas-Blanco, Aung Lynn, Jonah Rosch, Rony Noreldin, Anthony Salerni, Christopher Lambert, Reeta P Rao
BACKGROUND: Hospital acquired fungal infections are defined as "never events"-medical errors that should never have happened. Systemic Candida albicans infections results in 30-50% mortality rates. Typically, adhesion to abiotic medical devices and implants initiates such infections. Efficient adhesion initiates formation of aggressive biofilms that are difficult to treat. Therefore, inhibitors of adhesion are important for drug development and likely to have a broad spectrum efficacy against many fungal pathogens...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28513133/antibacterial-property-of-a-polyethylene-glycol-grafted-dental-material
#15
Liying Peng, Li Chang, Xi Liu, Jiuxiang Lin, Hongliang Liu, Bing Han, Shutao Wang
Dental materials often cause bacterial adhesion and promote bacterial biofilm formation, which brings a series of long-standing and significant problems in oral health. However, the current development of antibacterial research in dental devices is limited by the lack of materials endowed with good antibacterial properties against oral bacteria. Here, we present a new strategy for reducing the initial adhesion of bacterial on dental biomaterials by chemically bonding long-chain polyethylene glycol. Our work represents an important step toward solving the problem of bacterial accumulation on dental devices...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28512498/treatment-outcomes-of-full-pulpotomy-as-an-alternative-to-tooth-extraction-in-molars-with-hyperplastic-irreversible-pulpitis-a-case-report
#16
Saeed Asgary, Prashant Verma, Ali Nosrat
Root canal therapy (RCT) is a common and successful treatment for irreversible pulpitis due to carious pulp exposure in mature permanent teeth. However, it is often an expensive procedure, may require multiple appointments, and requires a high level of training and clinical skill, specifically in molars. Uninsured patients, low-income patients, and patients with limited access to specialist care often elect for extraction of restorable teeth with irreversible pulpitis. There is a need for an alternative affordable treatment option to preserve their teeth and maintain chewing function...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28501354/calcium-orthophosphates-capo4-occurrence-and-properties
#17
REVIEW
S V Dorozhkin
The present overview is intended to point the readers' attention to the important subject of calcium orthophosphates (CaPO4). This type of materials is of the special significance for the human beings because they represent the inorganic part of major normal (bones, teeth and antlers) and pathological (those appearing due to various diseases) calcified tissues of mammals. For example, atherosclerosis results in blood vessel blockage caused by a solid composite of cholesterol with CaPO4, while dental caries (tooth decay) and osteoporosis (a low bone mass with microarchitectural changes) mean a partial decalcification of teeth and bones, respectively, that results in replacement of a less soluble and harder biological apatite by more soluble and softer calcium hydrogenorthophosphates...
May 10, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28499630/effect-of-surface-alkali-based-treatment-of-titanium-implants-on-ability-to-promote-in-vitro-mineralization-and-in-vivo-bone-formation
#18
Winston A Camargo, Shinji Takemoto, Jan Willem Hoekstra, Sander C G Leeuwenburgh, John A Jansen, Jeroen J J P van den Beucken, Hamdan S Alghamdi
This study investigated whether a novel alkali-based surface modification enhances in vitro mineralization as well as in vivo bone formation around titanium (Ti) implants in a femoral condyle model of 36 male Wister rats. All implant surfaces were grit-blasted and then received either acid-etching treatment, alkali-based treatment, or were left untreated (controls). Histological and histomorphometrical analyses were performed on retrieved specimens after 4 and 8weeks of healing to assess peri-implant bone formation...
May 9, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28495017/graphene-for-the-development-of-the-next-generation-of-biocomposites-for-dental-and-medical-applications
#19
REVIEW
Han Xie, Tong Cao, Francisco Javier Rodríguez-Lozano, Emma Kim Luong-Van, Vinicius Rosa
OBJECTIVE: Graphene and its derivatives, graphene oxide (GO) and reduced graphene oxide (rGO), are 2D carbon-based materials with remarkable physical, chemical and biological properties. Graphene sheets have high specific surface area and mechanical strength. Moreover, they have been shown to influence the differentiation of stem cells and to improve properties of biomaterials. METHODS: Here, we present the recent achievements on the use of graphene and its derivatives to improve properties and enhance bioactivity of biomaterials...
May 8, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28492746/biocompatibility-of-a-new-dental-glass-ionomer-cement-with-cellulose-microfibers-and-cellulose-nanocrystals
#20
Rafael Menezes-Silva, Fabiano Vargas Pereira, Maria Helena Santos, Janir Alves Soares, Suelleng Maria Cunha Santos Soares, João Luiz de Miranda
Developing new restorative materials should avoid damage to tissue structures. This study evaluated the biocompatibility of a commercial dental glass ionomer cement (GIC) mechanically reinforced with cellulose microfibers (GIC+CM) or cellulose nanocrystals (GIC+CN) by implantation of three test specimens in subcutaneous tissue in the dorsal region of 15 Rattus norvegicus albinus rats. Each rat received one specimen of each cement, resulting in the following groups (n=15): Group GIC (Control), Group GIC+CM and Group GIC+NC...
March 2017: Brazilian Dental Journal
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