Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Characterization Of New Rotary Endodontic Instruments Fabricated From Special Thermomechanically Processed Niti Wire
Download Characterization Of New Rotary Endodontic Instruments Fabricated From Special Thermomechanically Processed Niti Wire full books in PDF, epub, and Kindle. Read online Characterization Of New Rotary Endodontic Instruments Fabricated From Special Thermomechanically Processed Niti Wire ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Characterization of New Rotary Endodontic Instruments Fabricated from Special Thermomechanically Processed NiTi Wire by : Jie Liu
Download or read book Characterization of New Rotary Endodontic Instruments Fabricated from Special Thermomechanically Processed NiTi Wire written by Jie Liu and published by . This book was released on 2009 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Although NiTi rotary instruments are very popular for endodontic treatment, instrument separation is still a challenge in clinic. A new NiTi rotary instrument has recently been marketed that is machined from M-Wire that has been subjected to a proprietary novel thermomechanical processing procedure. The manufacturer has claimed that this new M-Wire instrument has considerably improved flexibility and resistance to cyclic fatigue, compared to conventional rotary instruments that are machined from superelastic (SE) austenitic NiTi wire. Clinical use has confirmed that these new M-Wire rotary instruments have outstanding clinical fatigue resistance. However, the mechanism for the improved clinical performance of these instruments is unknown. The objective of this study was to employ a variety of metallurgical laboratory techniques to determine the origin of these improved mechanical properties for the new rotary instruments. Specimens from as-received M-Wire instruments, clinically used M-Wire instruments, and conventional instruments were prepared for evaluation. The temperature range for phase transformation was examined by differential scanning calorimetry (DSC). Vickers hardness measurements were made since hardness variations for the same type of alloy has been found to correlate with variations in mechanical properties. The microstructures of the NiTi alloys were revealed by acid etching and examined with an optical microscope and a scanning electron microscope. Wear resistance of clinically used M-Wire instruments was investigated by examining their surfaces with an SEM. In a complementary study, bright-field images of M-Wire blanks were obtained by scanning transmission electron microscopy (STEM). DSC study showed that M-Wire instruments have much higher Af (austenite-finish) temperatures (over 40°C) than conventional superelastic rotary instruments (below room temperature), and are a mixture of martensite, R-phase and austenite at room temperature. The Vickers hardness of M-Wire instruments is significantly higher than that of conventional rotary NiTi instruments. Mean Vickers hardness number for the tip, intermediate region and shank region of size 30/.04 taper M-Wire instruments were about 374, 380 and 392 each. Better wear resistance was observed with the SEM on clinically used M-Wire instruments, which presented less microcracks and evidence of permanent deformation on the surface compared with surfaces of clinically used conventional NiTi instruments. This improved wear resistance is attributed to increased hardness for surface region of the M-Wire instrument. Acid-etched M-Wire instruments presented a classical lenticular martensite structure when observed with the optical microscope and SEM. EDS analyses of the microstructures of the M-Wire instruments revealed titanium-rich precipitates. STEM examinations of M-Wire blanks revealed much coarser grains, twinning, and a high density of dislocations, which were not observed in starting superelastic NiTi wire blanks for conventional instruments. In summary, increased hardness was found for M-Wire instruments, compared with conventional superelastic NiTi rotary instruments, which served as a control for this study. The STEM observations show that the improved mechanical properties of the starting M-Wire (and the rotary instruments manufactured from this special NiTi wire) arise from strengthening mechanisms in the martensitic structure, which were induced by extensive thermomechanical processing.
Download or read book Metallurgy written by Yogiraj Pardhi and published by BoD – Books on Demand. This book was released on 2012-09-19 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades scientists and engineers around the globe have been responding to the requirement of high performance materials through innovative material research and engineering. The ever increasing demand on quality and reliability has resulted in some dazzling technological achievements in the area of advanced materials and manufacturing. The purpose of this book is to bring together significant findings of leading experts, in developing and improving the technology that supports advanced materials and process development. From gold nano-structures to advanced superalloys, this book covers investigations involving modern computer based approaches as well as traditional experimental techniques. Selected articles include research findings on advances made in materials that are used not only in complex structures such as aeroplanes but also in clinical treatments. It is envisaged that it will promote knowledge transfer across the materials society including university students, engineers and scientists to built further understanding of the subject.
Book Synopsis Biomaterials Science: Processing, Properties and Applications II by : Roger Narayan
Download or read book Biomaterials Science: Processing, Properties and Applications II written by Roger Narayan and published by John Wiley & Sons. This book was released on 2012-11-08 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributed papers from the 2011 Materials Science and Technology symposia, this is a useful one-stop resource for understanding the most important issues involved in the processing, properties, and applications of biomaterials science. Logically organized and carefully selected, the articles cover the themes of the symposia: Next Generation Biomaterials: and Surface Properties of Biomaterials. An essential reference for government labs as well as academics in mechanical and chemical engineering, materials and or ceramics, and chemistry.
Book Synopsis Current Therapy in Endodontics by : Priyanka Jain
Download or read book Current Therapy in Endodontics written by Priyanka Jain and published by John Wiley & Sons. This book was released on 2016-10-17 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dentistry has been undergoing enormous changes, and the field of endodontics has certainly been at the forefront. Recent advances in technology, materials, and equipment have changed the way endodontics is practiced today, thereby facilitating treatments with greater efficiency, precision, and success, ultimately leading to better outcomes. Current Therapy in Endodontics encompasses the recent discoveries and applications for this field in one clinically relevant volume. Evidence-based presentation of recent advances in the field of endodontics Objective comparison of materials and instruments on the market Tables present key data and instruction for quick viewing and comprehension
Book Synopsis An SEM Investigation Into the Effects of Clinical Use on Heat-treated Nickel-titanium Rotary Endodontic Files by : Thomas G. Burke
Download or read book An SEM Investigation Into the Effects of Clinical Use on Heat-treated Nickel-titanium Rotary Endodontic Files written by Thomas G. Burke and published by . This book was released on 2016 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: The third generation of NiTi based rotary files involves a new proprietary thermomechanical process which improves fatigue resistance and flexibility. The purpose of this study was to evaluate the qualitative and quantitative wear/fatigue of three third-generation NiTi rotary endodontic file systems following use in extracted posterior human teeth in a simulated clinical model. Materials and Methods: One hundred files (five packs of five files across four brands: ProFile VortexTM, Vortex BlueTM, ProTaper GoldTM, and Coltene HyFlex® CMTM) were examined with an SEM at the same four positions along their length using a custom-fabricated sample jig before use and through three clinical simulations, and were then evaluated for wear and deformation. Files were categorized as usable, microscopically unacceptable and visually unacceptable. Results: Twelve files visibly failed throughout this study (three separated and eight plastically deformed), and the majority of these failures occurred in the first use of the file. Many instruments were evaluated as microscopically unacceptable before use. A repeated-measures logistic regression analysis found no significant effects for brand, amount of use, and their interaction for files that remained visibly useful. Of those that rated microscopically useful, a significant effect was seen for number of uses (p=0.0127). Contrasts of uses showed significance for use 0 vs. 1, 0 vs. 2, and 0 vs. 3, indicating that unused files were more likely to be microscopically acceptable than used files. No significance was seen between contrasts of uses 1, 2, or 3. Summary and Conclusions: No quantitative wear or distortion pattern specific to any brand was observed that limited multiple file uses. Poor surface condition observed microscopically is not necessarily a precursor to instrument failure. Third-generation controlled memory instruments tend to deform plastically and present minimal risk of clinical separation and canal obstruction through multiple uses.
Book Synopsis Failure Analysis of Biometals by : Reza H Oskouei
Download or read book Failure Analysis of Biometals written by Reza H Oskouei and published by MDPI. This book was released on 2020-12-10 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metallic biomaterials (biometals) are widely used for the manufacture of medical implants, ranging from load-bearing orthopaedic prostheses to dental and cardiovascular implants, because of their favourable combination of properties, including high strength, fracture toughness, biocompatibility, and wear and corrosion resistance. Owing to the significant consequences of implant material failure/degradation, in terms of both personal and financial burden, failure analysis of biometals has always been of paramount importance in order to understand the failure mechanisms and implement suitable solutions with the aim to improve the longevity of implants in the body. Failure Analysis of Biometals presents some of the latest developments and findings in this area. This includes a great range of common metallic biomaterials (Ti alloys, CoCrMo alloys, Mg alloys, and NiTi alloys) and their associated failure mechanisms (corrosion, fatigue, fracture, and fretting wear) that commonly occur in medical implants and surgical instruments.
Book Synopsis Advances in Biomedical and Biomimetic Materials by : Roger Narayan
Download or read book Advances in Biomedical and Biomimetic Materials written by Roger Narayan and published by John Wiley & Sons. This book was released on 2009-08-19 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of articles from the Advances in Biomedical and Biomimetic Materials symposium give insight into advances in biomedical and biomimetic materials. These selected articles cover such topics as scaffolds for tissue engineering, bioceramics, biomimetic materials, nanoparticles for medical diagnosis and treatment, and novel materials for drug delivery and biosensing.
Book Synopsis Endodontics: Clinical and Scientific Updates, An Issue of Dental Clinics of North America by : Mo K. Kang
Download or read book Endodontics: Clinical and Scientific Updates, An Issue of Dental Clinics of North America written by Mo K. Kang and published by Elsevier Health Sciences. This book was released on 2016-12-03 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: This issue of Dental Clinics of North America focuses on Endodontics, and is edited by Dr. Mo Kang. Articles will include: Endodontic Microbiology and Pathobiology: Current State of Knowledge; Conventional Endodontic Therapies: Innovation in Biomechanics; Endodontic Retreatments: Non-surgical and Surgical Approaches; Pain Management in Endodontics: Opportunity for New Therapeutics; Pulpal Management of Immature Teeth: Use of New Biomaterials for Conservative Therapies; Innovation in Bioactive Restorative Materials; Topic in Regenerative Endodontics; Biological Molecules for the Regeneration of the Pulp-dentin Complex; Cell Homing Approach in Endodontic Regeneration; Stem Cell Therapies for Oral and Systemic Diseases; Endodontic Treatment Outcomes, and more!
Book Synopsis Biomaterials Science: Processing, Properties and Applications III by : Susmita Bose
Download or read book Biomaterials Science: Processing, Properties and Applications III written by Susmita Bose and published by John Wiley & Sons. This book was released on 2013-08-12 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains14 contributed papers from the following2012 Materials Science and Technology (MS&T’12)symposia: Next Generation Biomaterials Surface Properties of Biomaterials
Book Synopsis An Investigation of Phase Transformation Mechanisms for Nickel-titanium Rotary Endodontic Instruments by : Satish B. Alapati
Download or read book An Investigation of Phase Transformation Mechanisms for Nickel-titanium Rotary Endodontic Instruments written by Satish B. Alapati and published by . This book was released on 2006 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Nickel-titanium rotary instruments based upon the intermetallic compound NiTi have gained considerable popularity among endodontists because the very low elastic modulus of NiTi enables these instruments to readily negotiate curved root canals during endodontic therapy with a slow-speed handpiece. However, concern about in vivo separation (fracture) of nickel-titanium instruments during treatment is still a major challenge confronting every manufacturer and endodontist, since this often happens without prior warning signs from permanent deformation. NiTi exists in two major microstructural phases: austenite, and martensite. Transformations between these NiTi phases occur rapidly by twinning on the atomic level and are reversible for stresses below the onset of permanent deformation. An intermediate R-phase is also sometimes observed for the transformation between austenite and martensite. The nickel-titanium rotary instruments are intentionally manufactured in the superelastic condition having the fully austenitic structure, which provides the capability of accommodating extensive elastic strain without fracture under clinical conditions associated with conventional root canal therapy. The overall objective of this study was to gain new insight into the microstructural phases in commercial NiTi rotary instruments and their transformations, which would be of scientific importance for development of new instruments with improved clinical performance. The phases present were identified by Micro-XRD (micro-x-ray diffraction) and TMDSC (temperature-modulated differential scanning calorimetry), using clinically popular ProFile GT and ProTaper nickel-titanium rotary instruments, which have two different cross-sectional designs. Instruments were analyzed in the as-received condition, after clinical use, and following elevated-temperature heat treatments. The first null hypothesis was that microstructural phases and phase transformations do not have an impact on clinical performance and instrument failure. The second null hypothesis was that appropriate heat treatments previously used for orthodontic wires would not result in beneficial changes in microstructural phases that may significantly affect the clinical life of these instruments. Based upon the present research and complimentary previous studies by this investigator, both null hypotheses were rejected. Information obtained from this research should aid future development of improved instruments with reduced likelihood of failure during clinical use.
Book Synopsis Endodontic Materials in Clinical Practice by : Josette Camilleri
Download or read book Endodontic Materials in Clinical Practice written by Josette Camilleri and published by John Wiley & Sons. This book was released on 2021-06-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endodontic Materials in Clinical Practice Endodontic Materials in Clinical Practice delivers a much-needed comprehensive and clinically oriented reference to the materials used in endodontic practice. It provides complete details on the properties of the materials required for specific techniques in order to help in the selection of the appropriate materials and improve patient outcomes. Comprehensive in scope and filled with helpful illustrations, the book covers endodontic materials used from the pulp to the root-end. In addition, the text considers the location and technique for each of the materials presented. Designed to be a practical and accessible reference, the book is organised by specific clinical procedure. Presents an illustrated guide to all materials used in endodontic practice Focuses on the clinical application for each material Explains why specific materials are used Includes information on how to select the correct material Considers locations and techniques in making material decisions Written for specialist endodontists and residents, dental material specialists, post-graduate students, general dentists, and dentistry students, Endodontic Materials in Clinical Practice is an essential resource for selecting the right materials for specific techniques.
Download or read book NiTi Materials written by Yoshiki Oshida and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-08-24 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nickel-Titanium alloys are smart materials exhibiting unique properties such as superelasticity and shape-memory effect. The material has been used as orthodontic wires in the dental field for over 20 years. This book is a comprehensive overview to the field of Ni-Ti Materials and the physical, chemical and mechanical properties of this versatile alloy. In addition, complications and challenges exhibited in applications are also discussed.
Book Synopsis Biomaterials Science: Processing, Properties and Applications V by : Roger Narayan
Download or read book Biomaterials Science: Processing, Properties and Applications V written by Roger Narayan and published by John Wiley & Sons. This book was released on 2015-09-16 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking place at the David L. Lawrence Convention Center, Pittsburgh, Pennsylvania, this CT Volume contains 17 papers from the following 2014 Materials Science and Technology (MS&T'14) symposia: Next Generation Biomaterials Surface Properties of Biomaterials
Book Synopsis Biomaterials in Endodontics by : Zohaib Khurshid
Download or read book Biomaterials in Endodontics written by Zohaib Khurshid and published by Elsevier. This book was released on 2021-10-26 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomaterials in Endodontics offers an up-to-date overview of endodontic biomaterials and their applications in regenerative medicine and tissue engineering. This book details the key biomaterials used in clinical endodontics and the benefits and challenges of using these materials, from root canal obturation materials to alloys for endodontic files and hand instruments. Chapters also offer a unique insight into the regenerative applications of endodontic biomaterials, such as the use of stem cells and growth factors for bone regeneration. Biomaterials in Endodontics is a useful resource for researchers working in biomedical engineering, regenerative medicine, and materials science with an interest in dentistry and bone regeneration. This book is also a helpful guide for endodontists, dentists, dental scientists, and clinicians with an interest in biomaterials for endodontics. - Details the latest innovations in materials used for endodontic procedures - Offers a unique insight into regenerative applications of endodontic biomaterials - Appeals to an interdisciplinary readership, combining materials science, regenerative medicine, and biomedical engineering approaches
Book Synopsis Orthodontic Materials by : Wiliam A. Brantley
Download or read book Orthodontic Materials written by Wiliam A. Brantley and published by Thieme. This book was released on 2011-01-01 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this important new textbook all scientific and clinical aspects of orthodontic materials are described.Recent developments in science and technology have led to the introduction of a plethora of new orthodontic products. This work serves as an excellent source of information for a field that requires knowledge of basic elements of materials science, engineering, chemistry, and physics, as well as clinical orthodontics. The subject has been part of graduate orthodontic education for almost three decades. Besides servicing the orthodontic training programs, the book also - investigates the interactions of orthodontic materials with other dental materials as well as hard tissues in the oral cavity,- gives a background to allow for proper material selection for efficient orthodontic mechanics,- treats the issues of biocompatibility, cytotoxicity and mutagenicity of materials.
Book Synopsis Endodontic Materials in Clinical Practice by : Josette Camilleri
Download or read book Endodontic Materials in Clinical Practice written by Josette Camilleri and published by John Wiley & Sons. This book was released on 2021-03-16 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endodontic Materials in Clinical Practice delivers a much-needed comprehensive and clinically oriented reference to the materials used in endodontic practice. It provides complete details on the properties of the materials required for specific techniques in order to help in the selection of the appropriate materials and improve patient outcomes. Comprehensive in scope and filled with helpful illustrations, the book covers endodontic materials used from the pulp to the root-end. In addition, the text considers the location and technique for each of the materials presented. Designed to be a practical and accessible reference, the book is organised by specific clinical procedure. Presents an illustrated guide to all materials used in endodontic practice Focuses on the clinical application for each material Explains why specific materials are used Includes information on how to select the correct material Considers locations and techniques in making material decisions Written for specialist endodontists and residents, dental material specialists, post-graduate students, general dentists, and dentistry students, Endodontic Materials in Clinical Practice is an essential resource for selecting the right materials for specific techniques.
Book Synopsis Shaping for Cleaning the Root Canals by : Gustavo De Deus
Download or read book Shaping for Cleaning the Root Canals written by Gustavo De Deus and published by Springer Nature. This book was released on 2021-11-25 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides clinicians with up-to-date, scientifically based guidance on the most important stages of endodontic treatment, i.e., cleaning and shaping of the root canal space, including mechanical preparation and chemical disinfection. Five internationally recognized experts present and discuss recent developments and new perspectives in the field. Important advances in root canal preparation and irrigation procedures are described with the aid of numerous high-quality illustrations. A key feature of the book is the detailed attention devoted to the latest research findings and to their impact on contemporary evidence-based clinical guidelines and modern clinical practice. On this basis, simple treatment protocols are proposed that take the anatomy of the root canals fully into account. In addition, emerging problems and trends are considered. The book will be an excellent resource for clinicians and advanced practitioners who are seeking to update their practice.
