Download or read book Titanium Niobium Zirconium and Tantalum for Medical and Surgical Applications written by Lyle D. Zardiackas and published by ASTM International. This book was released on 2006 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book L implant zircone written by Wajd Al Sheikh Hassan and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: En quelques décennies, l'implant endo-osseux s'est imposé comme traitement de référence des réhabilitations en secteur édenté. L'implant titane, aux propriétés mécaniques remarquables et dont la biocompatibilité n'est plus à démontrer, est à ce jour la référence en implantologie. Si l'évolution des procédés de fabrication et de préparation des surfaces implantaires (sablage, mordançage, apport d'un matériau bioactif) a permis d'améliorer sensiblement l'ostéointégration et le contact os-implant, le recul clinique soulève l'existence d'une réelle problématique d'ordre esthétique. A titre d'exemple, un col implantaire visible par transparence donnant une couleur grisâtre à la muqueuse péri-implantaire, l'apparition des spires du corps implantaire lors de récessions figurent classiquement parmi des résultats non escomptés. Le succès implantaire n'est plus donc seulement défini par l'ostéointégration mais aussi par l'esthétique de la réhabilitation. Pour remédier à ces défauts, des solutions alternatives doivent répondre à cet impératif esthétique tout en maintenant le taux de succès obtenu par les implants titane. Des recherches actuellement en développement mettent en lumière un candidat sérieux : l'oxyde de zirconium ou zircone. En effet celui-ci présente une couleur proche de la dent naturelle, des propriétés mécaniques équivalentes au titane, une biocompatibilité, une bonne ostéintégration ainsi qu'une faible affinité pour la plaque dentaire. Cet article a pour objectifs de discuter des propriétés mécaniques et biologiques du matériau, de rappeler les critères de succès esthétique en implantologie et enfin de présenter les études illustrant l'avantage esthétique de l'implant zircone dans les réhabilitations antérieures. A l'issue de ce travail, il apparaît que l'implant zircone semble constituer une alternative fiable à l'implant titane dans la réhabilitation esthétique antérieure. Des essais cliniques avec un suivi supérieur à 5 ans devront être réalisés afin de conforter cette affirmation.
Download or read book The Influence of Milled Vs Laser grooved Zirconia Implant Surfaces on Human Osteoblast Behavior written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Zirconia is a potential alternative to titanium for dental implants, however, there is a need for the improvement of surface treatment protocols to enhance its bioactivity. Several strategies have been described to achieve this aim, including the manufacture of surface modifications that increase roughness using laser, micro-machining or surface treatments as sandblasting and acid etching (SB-AE). The benefits of laser graving versus milling are not yet known.Objective: In vitro comparison of osteoblast response to Zirconia with SB-AE surfaces and additional groove-textures produced by micro-machining or laser, regarding cell attachment, cell proliferation and differentiation.Materials and Methods: Milled (M-YTZP) and laser (L-YTZP) groove textured zirconia discs with 10, 100, and 100 u00b5m features of depth, width and spacing, respectively, were produced using press and sintering. Untextured (S-YTZP) discs were used as controls. SB-AE protocol was applied to all samples to achieve a mean roughness ranging between 2.49 u00b1 0.3u00b5m and 2.03 u00b1 0.48u00b5m (p>0.05). Human osteoblasts were cultured on discs for 14 days. Morphology and cellular adhesion were observed using scanning electron microscopy (SEM) after 1 day. Cell viability and proliferation were evaluated at 1,3,7 and 14 days using a resazurin-based method. Alkaline phosphatase (ALP) activity was evaluated at 7 and 14 days and Collagen type I, Osteopontin and IL-1u03b2 were evaluated at 3 and 7 days using ELISA. All results were presented as mean u00b1 standard deviation (SD). Group comparisons were tested using Anova (Tukeyu2019s post-hoc) using appropriate statistical software and significance was set at p0.05.Results: Cell viability and proliferation increased over time in all study groups. M-YTZP and L-YTZP viability was significantly higher than in S-YTZP group at 7 and 14 days (p
Download or read book Comprehensive Biomaterials II written by Kevin Healy and published by Elsevier. This book was released on 2017-05-18 with total page 4865 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Biomaterials II, Second Edition, Seven Volume Set brings together the myriad facets of biomaterials into one expertly-written series of edited volumes. Articles address the current status of nearly all biomaterials in the field, their strengths and weaknesses, their future prospects, appropriate analytical methods and testing, device applications and performance, emerging candidate materials as competitors and disruptive technologies, research and development, regulatory management, commercial aspects, and applications, including medical applications. Detailed coverage is given to both new and emerging areas and the latest research in more traditional areas of the field. Particular attention is given to those areas in which major recent developments have taken place. This new edition, with 75% new or updated articles, will provide biomedical scientists in industry, government, academia, and research organizations with an accurate perspective on the field in a manner that is both accessible and thorough. Reviews the current status of nearly all biomaterials in the field by analyzing their strengths and weaknesses, performance, and future prospects Covers all significant emerging technologies in areas such as 3D printing of tissues, organs and scaffolds, cell encapsulation; multimodal delivery, cancer/vaccine - biomaterial applications, neural interface understanding, materials used for in situ imaging, and infection prevention and treatment Effectively describes the many modern aspects of biomaterials from basic science, to clinical applications
Download or read book Degradation of Implant Materials written by Noam Eliaz and published by Springer Science & Business Media. This book was released on 2012-08-21 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the current understanding of the mechanical, chemical and biological processes that are responsible for the degradation of a variety of implant materials. All 18 chapters will be written by internationally renowned experts to address both fundamental and practical aspects of research into the field. Different failure mechanisms such as corrosion, fatigue, and wear will be reviewed, together with experimental techniques for monitoring them, either in vitro or in vivo. Procedures for implant retrieval and analysis will be presented. A variety of biomaterials (stainless steels, titanium and its alloys, nitinol, magnesium alloys, polyethylene, biodegradable polymers, silicone gel, hydrogels, calcium phosphates) and medical devices (orthopedic and dental implants, stents, heart valves, breast implants) will be analyzed in detail. The book will serve as a broad reference source for graduate students and researchers studying biomedicine, corrosion, surface science, and electrochemistry.
Download or read book Advanced Ceramics for Dentistry written by James Shen and published by Butterworth-Heinemann. This book was released on 2013-09-05 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growth of implant and fixed prosthodontics practices in dentistry has created a rapidly increasing demand for advanced ceramics and ceramic processes. Innovations in ceramics and ceramic processes are vital to ensure reliable and affordable dental-restoration solutions with aesthetically pleasing outcomes. The work aims to engage the bioceramics and engineering communities to meet the challenges of modern dental restoration using advanced ceramics. Incorporating fundamental science, advanced engineering concepts, and clinical outcomes, the work is suitable for bioceramicists, ceramics manufacturers, dental clinicians and biologists. - State-of-the-art-coverage encompasses bioresorbable ceramics for bone regeneration and bioactivating surfaces of inert, high-strength ceramics for implantation, keeping research knowledge appropriately updated - Discusses transition from the baseline stable and physically stiff ceramics research into engineering of highly coherent laminate composites for prosthetic crowns and bridges - Showcases current feasible techniques for producing, in cost-effective and materials-saving ways, long-lasting individualized ceramic components with biocompatibility, complexity and high precision
Download or read book Les implants dentaires zircone written by Edouard Courreges and published by . This book was released on 2008 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis quelques années, les succès d'implants dentaires ostéointégrés ont contribué à révolutionner le secteur dentaire. Cette réhabilitation orale implantaire occupe désormais une place de choix parmi les différentes possibilités thérapeutiques associées à chaque traitement prothétique. La solution implantaire permet en effet dans bien des cas de simplifier le traitement et de préserver les structures dentaires saines bordant l'édentement à restaurer. Cependant en implantologie, bien que la couronne qui couvre la limite de l'implant puisse être esthétiquement optimale, il existe toujours la possibilité de visualiser une image grisâtre de l'implant titane à travers la muqueuse péri-implantaire, hypothéquant du même coup le résultat esthétique de la restauration. De même, des récessions des tissus mous péri-implantaires peuvent dévoiler des spires de l'implant, visible alors à l'oeil et rendre le résultat inesthétique. Ainsi, pour optimiser la réhabilitation orale implantaire et gommer les inconvénients esthétiques et biologiques (récessions gingivales péri-implantaires, accumulation bactérienne au niveau du col implantaire à àméliorer...) des implants Titane, des fabricants ont mis au point un implant céramique en zircone qui pourrait résoudre ces problèmes tout en conservant la viabilité mécanique des implants en titane, spécialement dans la région maxillaire antérieure.
Download or read book A Systematic Review about Two piece Zirconia Implants Results of Preclinical Studies written by Nishihara Hironobu and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background (500)Despite biocompatibility and excellent clinical outcome of titanium implants, a growing interest for an alternative implant material is noticeable. This is mostly due to patient-specific requests for metal-free treatment and concerns about adverse reactions titanium particle corrosion. Therefore, manufacturers are increasingly introducing zirconia implants with different features and designs. While most systems offer one-piece implant design, little is known about the applicability and features of two-piece implants.Aim of the study (300)This review aimed to summarize the preclinical knowledge about two-piece zirconia implant systems. Focus was given on design features, mechanical resistance of the implants and of the implant-restoration complex as well as peri-implant tissue response.Material and Methods (1000)An electronic search of the literature until March 2017 was performed to identify all articles related to preclinical research on two-piece zirconia implant systems. The search was conducted using MEDLINE (National Library of Medicine), Pubmed without restrictions concerning the date of publication. The search terminology included: zirconia implant, two-piece, mechanical properties, fracture resistance, strength, osseointegration, bone-to-implant contact, soft tissue, histology, histomorphometry (connecting different keywords with AND, OR). Hand-searching of the bibliographies of all full-text articles and related reviews, selected from the electronic search, was also performed. The literature search was limited to only English language articles. References appraised in related systematic reviews were also considered.Results (1000)Of the initially-identified 1026 titles, 58 papers were selected for full-text evaluation. After exclusion 53 articles, a total of 6 article were finally selected and analysed. The mechanical resistance was evaluated in 4 studies, where a clinical situation of implants placed in the anterior region was simulated. Interestingly, most studies used titanium abutment screws for evaluation. Irrespective of connection type (screw- or cement-retained), implant fractures were mostly reported in the implant-abutment connection, with the weakest component to be abutment screw, abutment and implant, respectively. In general, two-piece zirconia implant systems showed higher failure rates and lower resistance than one-piece zirconia implants as well as titanium implants.Peri-implant tissues were evaluated in 2 studies. Regardless of implant type (one- or two-piece), a significant marginal bone loss was recorded 6months after placement (0.19-1.11mm). The height of buccal peri-implant mucosa and bone-to-implant contact ranged, respectively, between 2.64-3.03mm and 78.6-87.9% with no statistically significant differences at follow-up evaluations.Conclusion and Clinical implications (500)Irrespective of connection type and the design, two-piece zirconia implants show sufficient strength to withstand normal forces applied in the anterior region. Hard and soft tissue response around two-piece zirconia implants seem to be similar to one-piece implants as well as titanium implants. Although they have the potential for clinical application, the limited knowledge about two-piece zirconia implants does not support their clinical application yet.
Download or read book Clinical Longevity of Zirconia Implants with the Focus on Biomechanical and Biological Outcome written by Ralf-Joachim Kohal and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Purpose of Review The goal of the present review is to update the reader on the scientific background of zirconia ceramic implants. Clinical investigations using zirconia ceramic implants over the last couple of years have brought up some new developments and questions. Can we be confident in placing zirconia ceramic implants given the recently published data? Is there a difference in the application of one- and two-piece implants? Recent Findings Systematic reviews on preclinical investigations of zirconia implants revealed that one-piece zirconia implants (> 4 mm) are sufficiently stable for clinical use. The same is true for some clinically available two-piece implant systems. Osseointegration and soft tissue integration are, according to the reviews, similar between titanium and zirconia implants with similar surface topographies. Regarding the clinical outcome, a meta-review exists evaluating systematic reviews. The findings of the systematic reviews and the meta-review are that there are good short-term clinical results for one-piece zirconia implants. However, the data for two-piece implants is not robust. Summary In certain applications (single tooth restorations and small bridges), the results of zirconia implants are comparable with titanium implants in short-term studies. Some mid-term investigations support the short-term results. However, according to the current scientific data available, zirconia implants cannot yet be considered an alternative to titanium implants because there are many areas where there is a lack of clinical studies on zirconia implants. Currently, they are an addendum to the titanium implant armamentarium for situations where they are useful (patient request, known hypersensitivity to titanium, or questions of esthetics when titanium might appear inappropriate for a certain situation/condition), but long-term studies are needed. Without a doubt, there is a need for two-piece zirconia implants, but limited research exists to support their clinical use at the moment
Download or read book A Prospective Clinical Cohort Investigation on Zirconia Implants 5 year Results written by Ralf-Joachim Kohal and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Mid-term data on zirconia oral implants is very rare. Therefore, the aim of this prospective clinical investigation was to evaluate the survival rate and the marginal bone loss of a one-piece zirconia implant after five years. Patient-reported outcomes were also recorded. Zirconia implants to support single crowns (SC) or a 3-unit fixed dental prosthesis (FDP) were placed and subsequently restored. After the insertion of the implants, at prosthetic delivery, and after five years, standardized radiographs were taken to evaluate marginal bone loss (MBL). For bone tissue evaluation, linear mixed models with random intercepts were fitted. Twenty-seven patients received one implant for an SC and 13 patients received two implants for a 3-unit FDP. Three patients each lost one implant for an SC before prosthetic delivery. Thirty-five patients were seen after five years, and no further implant was lost. The cumulative five-year implant survival rate was 94.3%. The MBL from implant installation up to five years was 0.81 mm. The MBL from implant installation to prosthetic delivery was statistically significant (p
Download or read book L implant zircone particularit s de la proth se supra implantaire written by Léo Gornès and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'implantologie a pris une place importante dans la pratique de l'art dentaire. Néanmoins des hypersensibilités potentielles au titane, les exigences esthétiques et le souhait grandissant de nombreux patients de s'abstenir de tout métal dans la cavité buccale ont fait émerger la zircone comme matériau implantaire. Ses propriétés mécaniques diffèrent de celles du titane, la question de la prothèse implantaire s'est donc posée. Objectif : l'objectif de ce travail consiste au travers d'une revue de la littérature à déterminer le système prothétique le plus avantageux sur un implant zircone. Matériels et méthodes : une revue de la littérature selon les recommandations PRISMA a été réalisée, à partir des bases de données PubMed, Scopus, DOSS et Cochrane. Résultats : dans cette revue de la littérature, 26 articles ont été retenus et ont pu être classées en trois catégories : implant monoblocs, systèmes 2 pièces et comparatif des deux systèmes. Les implants zircone en une pièce sont mécaniquement plus avantageux, cependant ils présentent des inconvénients (effet de la préparation sur la résistance mécanique de l'implant, impact du type de ciment et spécificité des coiffes implanto-portées). Les études portant sur les systèmes en deux pièces ont également montré leurs limites, notamment sur l'impact du matériau du pilier. Enfin, les éléments constitutifs de ces deux types de systèmes ont été abordés afin d'établir pour chacun un assemblage optimal. Conclusion : ce travail a permis d'exposer les avantages et inconvénient des deux systèmes et les perspectives de la prothèse sur implant en zircone. Des études supplémentaires semblent nécessaires pour valider un système optimal.
Download or read book Bioceramics 13 written by Sandro Giannini and published by . This book was released on 2001 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioceramics 13 contains the proceedings of the 13th International Symposium on Ceramics in Medicine organized by the "International Society for Ceramics in Medicine". This society is an established forum for distinguished material scientists, bioengineers, molecular and cellular biologists, bone biologists, orthopedic surgeons, clinicians and manufacturers, to gather together and discuss the latest achievements in the field of bioceramic materials.
Download or read book Dental Implant Materials 2019 written by In-Sung Yeo and published by MDPI. This book was released on 2021-03-17 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dental implant materials are advancing in the fusion of various scientific fields. Surface modification technologies for implants have been applied to titanium at the micro-level for about four decades. Now, implant surfaces are being topographically and chemically modified at both the micro- and nano-level. The modification techniques are altering other metals and ceramics, making these materials more biocompatible. Materials for abutments in dental implant systems appear to depend on implant–abutment connection structures. Biomechanical factors, such as friction and preload, influence the development of the abutment materials. Additionally, the surfaces of the abutment materials are important in the soft-tissue attachment, which is being actively investigated. As dental implants have to be functional in human bodies for a long time, numerous materials are being clinically tested as implant-supported restorations. The Special Issue, “Dental Implant Materials 2019”, introduces the creative works of scientists on the current advancements in the field of materials for implant dentistry.
Download or read book Comparaison de la bio int gration des implants en zircone et en titane written by Estelle Brin and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le titane est le matériau le plus utilisé pour la fabrication d'implants dentaires, cependant, de nouveaux matériaux ont été introduits, comme la zircone. De par leur composition, leur structure cristalline, leurs propriétés physico-chimiques et mécaniques, la zircone et le titane constituent des biomatériaux de choix pour l'implantologie. Il est également important de s'intéresser à la bio-intégration. Définie pour la première fois par Brånmarck et al. , la bio intégration est un processus biologique caractérisant l'interaction directe entre le tissu osseux et le biomatériau sans interface fibreuse. L'objectif de cette thèse était de comparer la bio-intégration des implants zircone et des implants titane, en réalisant une revue systématique de la littérature. Le nombre d'articles sélectionnés était de 28. Les résultats tendent à montrer un processus d'ostéointégration initiale plus rapide avec le titane que la zircone, mais comparable après réalisation de traitement de surface. En termes d'adhésion bactérienne, la zircone semble comparable au titane. Les implants en zircone pourraient donc constituer une alternative prometteuse au titane, notamment dans le cas d'allergie. Cependant, d'autres essais cliniques longitudinaux et comparatifs à long terme sont nécessaires pour valider la zircone en tant qu'alternative viable à l'implant en titane.
Download or read book Fit of Zirconia Ceramic Prostheses on Implants written by Jaafar Abduo and published by . This book was released on 2010 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue of Zirconia a Danger for Biomedical Implants written by Adam James Wallymahmed and published by . This book was released on 2013 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wear Parameters of Zirconia and Titanium at the Implant abutment Interface written by Michael William Klotz and published by . This book was released on 2009 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
