Download or read book Factors Affecting the Fracture Strength and Fatigue Resistance of Molar Crowns Produced Using a Zirconia based System written by Mohammed Hani Zahran and published by . This book was released on 2013 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting the Fracture Strength and Fatigue Resistance of Molar Crowns Produced Using a Zirconia based System written by Mohammed Hani Zahran and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue and Fracture Behaviour of Additively Manufactured Mechanical Components written by Roberto Citarella and published by MDPI. This book was released on 2021-02-19 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of additive manufacturing (AM) processes applied to the fabrication of structural components creates the need for design methodologies supporting structural optimization approaches that take into account the specific characteristics of the process. While AM processes enable unprecedented geometrical design freedom, which can result in significant reductions of component weight, on the other hand they have implications in the fatigue and fracture strength due to residual stresses and microstructural features. This is linked to stress concentration effects and anisotropy that still warrant further research. This Special Issue of Applied Sciences brings together papers investigating the features of AM processes relevant to the mechanical behavior of AM structural components, particularly, but not exclusively, from the viewpoints of fatigue and fracture behavior. Although the focus of the issue is on AM problems related to fatigue and fracture, articles dealing with other manufacturing processes with related problems are also be included.
Download or read book Surgical Research in Implant Dentistry written by Michel M. Dard and published by Springer Nature. This book was released on 2023-11-25 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores, in a comprehensive and systematic manner, Surgical Research methodologies to the design and development of investigational studies in the field of implant-based oral rehabilitation. Such studies are linked in a chain binding in vitro, in vivo, ex vivo, and digital evaluations. An ambitious objective consists in exposing how investigators can generate and deliver knowledge by capturing synergy coming from preclinical and clinical trials. Accordingly, throughout the book, translational aspects are closely scrutinized. The opening chapters consider materials, methods and procedures for preclinical and clinical studies in which approaches and models are extensively described. The focus then moves to the process by which application of histology, biomechanics, biomarkers, cellular/molecular biology, and imaging technologies lead to new results and consequently novel treatment concepts in implant dentistry, implant borne prosthetic rehabilitations and the replacement or regeneration of tissues. Finally, the exciting opportunities afforded by the digital world are addressed. This book shall be a valuable resource and time-saving tool for a wide audience of researchers, students, practitioners, and academics.
Download or read book Fracture Resistance of Non Metallic Molar Crowns Manufactured with CEREC 3D written by Dalia A. Madani and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives. To compare fracture strength and fatigue resistance of ceramic (ProCAD, Ivoclar-Vivadent) (C) and resin composite (Paradigm MZ100, 3M/ ESPE) (R) crowns made with CEREC-3D. Methods. A prepared ivorine molar tooth was duplicated to produce 40 identical prepared specimens made of epoxy resin (Viade). Twenty (C) crowns and 20 (R) were cemented to their dies using resin cement. Ten of each group were subjected to compressive loading to fracture. The remaining 10 of each group were subjected to mechanical cyclic loading for 500,000 cycles. The survivors were subjected to compressive loading to fracture. Results. No significant difference in mean fracture load was found between the two materials. However, only 30% of the (C) crowns vs. 100% of the (R) crowns survived the cyclic loading test. Conclusions. (R) crowns demonstrated higher fatigue Resistance than (C) crowns in-vitro and might better resist cracking in-vivo.
Download or read book Phillips Science of Dental Materials written by Kenneth J. Anusavice, DMD, PhD and published by Elsevier Health Sciences. This book was released on 2012-09-27 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn the most up-to-date information on materials used in the dental office and laboratory today. Emphasizing practical, clinical use, as well as the physical, chemical, and biological properties of materials, this leading reference helps you stay current in this very important area of dentistry. This new full-color edition also features an extensive collection of new clinical photographs to better illustrate the topics and concepts discussed in each chapter. Organization of chapters and content into four parts (General Classes and Properties of Dental Materials; Auxiliary Dental Materials; Direct Restorative Materials; and Indirect Restorative Materials) presents the material in a logical and effective way for better comprehension and readability. Balance between materials science and manipulation bridges the gap of knowledge between dentists and lab technicians. Major emphasis on biocompatibility serves as a useful guide for clinicians and educators on material safety. Distinguished contributor pool lends credibility and experience to each topic discussed. Critical thinking questions appearing in boxes throughout each chapter stimulate thinking and encourage classroom discussion of key concepts and principles. Key terms presented at the beginning of each chapter helps familiarize readers with key terms so you may better comprehend text material. NEW! Full color illustrations and line art throughout the book make text material more clear and vivid. NEW! Chapter on Emerging Technologies keeps you up to date on the latest materials in use. NEW! Larger trim size allows the text to have fewer pages and makes the content easier to read.
Download or read book Fracture Resistance of Non Metallic Molar Crowns Manufactured with CEREC 3D written by Dalia A. Madani and published by . This book was released on 2010 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objectives. To compare fracture strength and fatigue resistance of ceramic (ProCAD, Ivoclar-Vivadent) (C) and resin composite (Paradigm MZ100, 3M/ ESPE) (R) crowns made with CEREC-3D. Methods. A prepared ivorine molar tooth was duplicated to produce 40 identical prepared specimens made of epoxy resin (Viade). Twenty (C) crowns and 20 (R) were cemented to their dies using resin cement. Ten of each group were subjected to compressive loading to fracture. The remaining 10 of each group were subjected to mechanical cyclic loading for 500,000 cycles. The survivors were subjected to compressive loading to fracture. Results. No significant difference in mean fracture load was found between the two materials. However, only 30% of the (C) crowns vs. 100% of the (R) crowns survived the cyclic loading test. Conclusions. (R) crowns demonstrated higher fatigue Resistance than (C) crowns in-vitro and might better resist cracking in-vivo.
Download or read book Aging Resistance and Mechanical Properties of Novel Zirconia Based Materials written by Giacomo Cuspidi and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Zirconia stabilized with 3% molar of yttria is a commonly used material in biomedical field for prosthetic implants thanks to its high mechanical properties, in particular a remarkable fracture strength (̃1000 MPa) and an acceptable fracture toughness (̃ 5 MPA*m̂0,5). Zirconia high fracture toughness derives from a mechanism called "transformation toughening" consisting in change of crystal structure around the path of a propagating crack, change that causes an increase of volume of 5% able to reduce further crack penetration. After being successfully used for hip prosthesis and dental implants, this material was found to suffer of deterioration when exposed for long periods to humid environment. This process, called Low Temperature Degradation, triggers the phase transformation of the material leading to an expansion of volume and progressive surface roughening together with loss of mechanical contact properties and biocompatibility. Further stabilization of 3Y-TZP with Cerium reduced the transformability of the material preventing LTD but worsening its fracture toughness. Alloying Cerium only to superficial grains appeared to be a successful solution to prevent surface degradation without impairing mechanical properties, although this procedure noticeably increased production costs. The aim of this project was to develop a process that could obtain similar results being at the same time feasible and suitable to industrial production. In order to do so, infiltration of presintered material was chosen for introducing both Cerium and alumina, known to improve respectively LTD resistance and mechanical properties. Extensive studies of Cerium infiltration kinetic were performed in order to limit its introduction to the superficial grains of the material. While alumina introduction actually improved hardness, fracture toughness and even 8 LTD, it also introduced major flaws in the material consistently lowering the ceramic strength making it unsuitable for a structural prosthetic use. Moreover, Cerium superficial introduction was accomplished calibrating the time of infiltration, the viscosity of the solution and the conditions of the preform. The material so obtained showed higher resistance to LTD and unchanged mechanical properties. Finally, an extensive mechanical characterization of samples covered with Cerium through Magnetron Sputtering techni que was performed in order to compare the results obtained through the infiltration one. Granted that Magnetron Sputtering is known to be successful for superficial coating, it's also quite expensive and difficult to apply on prosthetic components. The two materials actually showed comparable mechanical properties, confirming the validity of the infiltration technique. In conclusion, improving the infiltration process for alumina introduction could be a challenge for further studies, while in the case of Cerium doping the obtained results were comparable to those obtained through more advanced and expensive techniques.
Download or read book Fatigue Resistance of All ceramic Molar Crowns Manufactured with CAD CAM Technology written by Mohammed Zahran and published by . This book was released on 2006 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dental Ceramics written by Ulrich Lohbauer and published by Springer Nature. This book was released on 2022-07-01 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an evidence-based update on recent most significant advances in dental ceramics, specifically related to the relationships between composition, microstructure and mechanical behavior. Readers will find an introduction to the chemistry of dental ceramics as well as information about the technological progress and practical requirements restorative materials need to satisfy for long-lasting structural integrity. The book uses mechanistic approaches to address failure mechanisms from controlled experiments thus providing the tools for the application of sound research methodologies in the field. It is targeted for researcher and dentists interested in the field of dental ceramic materials and fracture mechanics.
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 Bioceramics 15 written by Besim Ben-Nissan and published by Trans Tech Publications Ltd. This book was released on 2003-05-15 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). Since their inception Bioceramics meetings have provided a treasure house of information for both scientists and clinicians in the medical field. The clinical applications are numerous, in particular in the areas of orthopaedics, maxillofacial, plastic and ocular surgery, percutaneous devices, tissue engineering and sensors. This volume in addition to research papers contributed also presents selected overviews and discussions on recent bioceramics research and trends.
Download or read book Stress and Reliability Analysis of a Metal Ceramic Dental Crown written by and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Glasses and Glass Ceramics for Medical Applications written by Emad El-Meliegy and published by Springer Science & Business Media. This book was released on 2011-12-02 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glass ceramics are a special group of materials in which a base glass can be crystallized under carefully controlled conditions, which in turn determine the properties of the material. These materials offer a wide range of physical and mechanical properties combining the distinctive characteristics of sintered ceramics and glasses. This book provides readers with an interest in medical ceramics with the ability to start making their own glasses and glass ceramics, together with an understanding of the various factors that control the final properties of these medical and dental materials. In addition, the authors describe various industrial problems with current, clinically-used medical glass ceramics and discuss appropriate scientific solutions. Glasses and Glass Ceramics for Medical Applications will appeal to a broad audience of biomaterials scientists, ceramists, and bioengineers, particularly those with an interest in orthopedic and dental applications, as well as scientists and engineers involved in the manufacture of glasses, glazes, enamels, and other glass coatings for the medical materials industry. The book will also be of interest to undergraduate and graduate students in materials engineering and dentistry, and is suitable for use in courses on medical and dental materials.
Download or read book Science and Technology of Zirconia V written by M., Bannister and published by CRC Press. This book was released on 1993-09-27 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zirconia V drew 122 contributions from 19 countries. The papers provide an up-to-date picture of zirconia research and development around the world. There is still considerable interest in the theory and practice of transformation toughening together with the application of zirconia toughening to increasingly more complex composite systems. They also reflect a prominent development of recent years, the resurgence of international interst in the zirconia-based solid oxide fuel cell.
Download or read book Advances in Ceramics written by Costas Sikalidis and published by BoD – Books on Demand. This book was released on 2011-09-06 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current book consists of twenty-four chapters divided into three sections. Section I includes fourteen chapters in electric and magnetic ceramics which deal with modern specific research on dielectrics and their applications, on nanodielectrics, on piezoceramics, on glass ceramics with para-, anti- or ferro-electric active phases, of varistors ceramics and magnetic ceramics. Section II includes seven chapters in bioceramics which include review information and research results/data on biocompatibility, on medical applications of alumina, zirconia, silicon nitride, ZrO2, bioglass, apatite-wollastonite glass ceramic and b-tri-calcium phosphate. Section III includes three chapters in applications of ceramics in environmental improvement and protection, in water cleaning, in metal bearing wastes stabilization and in utilization of wastes from ceramic industry in concrete and concrete products.
Download or read book Fixed Restorations written by Irena Sailer and published by Quintessenz Verlag. This book was released on 2021-07-01 with total page 1858 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Fixed Restorations: A Clinical Guide to the Selection of Materials and Fabrication Technology, the authors Irena Sailer, Vincent Fehmer, and Bjarni Pjetursson have created a timely and comprehensive guide to modern reconstructive dentistry. The book is divided into four parts: basic information regarding materials and production processes, step-by-step clinical procedures with extensive case presentations, long-term outcomes, and management of complications. With over 2000 clinical images and diagrams, backed up with the scientific evidence for recommendations, the best practice for tooth- and implant-supported fixed restorations is clearly described. The vast clinical and technical knowledge and experience of the authors has resulted in a unique textbook that will aid in decision making regarding material selection and procedures for all patients in need of fixed restorations.
