Download or read book Bioactive Glass Filled Resin Composites written by Dmytro Khvostenko and published by . This book was released on 2014 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dental resin composites are widely used in modern dentistry due to their aesthetic appearance. However, resin based restorations have inferior mechanical properties (fracture is the second reason for restorations replacement) in comparison to alloy based composites and their antimicrobial properties still remain poor, leading to secondary tooth decay development on tooth-filling interface (which is the primary reason for restorations failure). In this work the Bioactive glass (BAG) was used as an antimicrobial filler. Experimental composites were prepared with 0-15 wt% BAG filler and 72-57 wt% silane treated silica glass, keeping a total filler content constant at 72 wt%. BAG composite's mechanical properties were examined, using 3-point bending beams for flexural strength measurement, pre-cracked compact-tension samples, C(T), for fracture toughness and fatigue crack growth evaluation. All mechanical properties were tested for different soaking treatments of the samples: 24 hours in DI water (all experiments) 2 months in sterile media (flexural test only) and 2 months in media with Streptococcus mutans bacteria (all experiemtns). All mechanical properties findings were compared to those ones of commercial Heliomolar composite. Main toughening mechanisms for BAG composites were evaluated post-test by SEM. The results showed that all mechanical properties for BAG composites were unaffected by increasing the filler content from 0 to 15 wt%. Moreover, all mechanical properties of BAG composites were significantly superior over Heliomolar composites. BAG composite's flexural strength properties were not affected by any of aging treatments and a slight decrease in fracture toughness and fatigue crack growth resistance was observed after 2 months soaking in media with bacteria. Main toughening mechanisms were related to BAG composite's increased filler, which resulted in more frequent crack deflection, and crack bridging at the crack tip and far away from it. In next phase of the research, a novel bioreactor and new test specimen type were developed, which allowed investigating the synergistic effect of cyclic loading and bacterial exposure on secondary tooth decay. The bioreactor was able to provide environment suitable for bacteria, similar to lab incubators. Teeth samples were machined into the disk shape (3 mm tall, 9 mm diameter), mainly consisting of dentin and the middle of sample was drilled and restored with 0 wt% BAG (0BAG) composite (2 mm deep, 5 mm diameter), introducing semi-circumferential gap between dentin and restoration of 10-30 microns. All samples were initially disinfected with 1% chloramine solution. Streptococcus mutans biofilm was grown over the samples and then they were placed in bioreactors and subjected to 1.5 Hz loading cycling at maximum load of 25% from breaking load and R=0.1 for 2 hours, followed by 4 hours resting at minimal load. The procedure was repeated for total of 2 weeks of an experiment, during which bacteria biofilm was constantly supplied with BHI media, carbon dioxide and 37oC temperature. After 2 weeks test, samples' biofilm viability was evaluated with live/dead staining kit and then, after fixing the biofilm on the samples in 4% gluteraldehyde, all samples were sectioned across the gap and stained with Gram Crysrtal Violet CAT+ dye, followed by fluorescence microscopy to reveal the depth of bacterial penetration down the gap. The depth of bacterial penetration of loaded samples was compared to one of non-loaded samples and results revealed a significantly deeper bacterial penetration for cyclically loaded samples versus non-loaded, thus, it was concluded that cyclic loading and bacterial exposure together aid secondary tooth decay propagation. In the last phase of this project the anti-microbial properties of BAG composites were evaluated. Using the same sample preparation technique and methods from the previous phase (except that now the composite was 15 wt% BAG, a.k.a 15BAG), we found out that bacterial penetration down the gap for 15BAG composite was significantly lower (almost 50% difference) in comparison to 0BAG composite, which made us confident to draw a conclusion that 15BAG composite possesses good antimicrobial properties and can be used for secondary tooth decay prevention.
Download or read book Bulk Fill Resin Composites in Dentistry written by Joseph Sabbagh and published by Springer Nature. This book was released on 2023-01-03 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to all relevant aspects of bulk fill materials and their uses in clinical practice. Today, we count over 30 different bulk fill materials, which can be used in the dental clinic. The composition of bulk fill materials and their different modes of application for moderate to large direct resin restorations placement are explained in this book. It is written by a group of international specialists and allows the reader to evaluate available materials, learn predictable techniques and evaluate long term survival as well as future developments. The book covers all fields related to the history of bulk fill composites, their composition and physical properties, and a step by step guide to their successful clinical applications. Practitioners will find it invaluable as a clinical manual and a good reference book.
Download or read book Evaluation of Experimental Bioactive Glass Resin Composites written by Muhammad Dian Firdausy and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aspects of Bioactive Glass in Dental Resin Composites written by 貟姣姣 and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Experimental Bioactive Glass Resin Composites written by Muhammad Dian Firdausy and published by . This book was released on 2015 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cytotoxicity of Resin Composites Containing Bioactive Glass Fillers written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dental Composite Materials for Direct Restorations written by Vesna Miletic and published by Springer. This book was released on 2017-11-25 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers both basic scientific and clinically relevant aspects of dental composite materials with a view to meeting the needs of researchers and practitioners. Following an introduction on their development, the composition of contemporary composites is analyzed. A chapter on polymerization explains the setting reactions and light sources available for light-cured composites. The quality of monomer-to-polymer conversion is a key factor for material properties. Polymerization shrinkage along with the associated stress remains among the most challenging issues regarding composite restorations. A new classification of dental composites is proposed to offer more clinically relevant ways of differentiating between commercially available materials. A review of specific types of composites provides an insight into their key issues. The potential biological issues of dental composites are reviewed in chapters on elution of leachable substances and cariogenicity of resin monomers. Clinical sections focus on material placement, finishing procedures, and the esthetics and clinical longevity of composite restorations. Bonding to tooth tissues is addressed in a separate chapter, as is the efficiency of various composite repair methods. The final chapter discusses future perspectives on dental composite materials.
Download or read book Bioactive and Therapeutic Dental Materials written by Salvatore Sauro and published by MDPI. This book was released on 2019-08-09 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue Bioactive and Therapeutic Dental Materials that was published in Materials
Download or read book Handbook of Bioceramics and Biocomposites written by Iulian Vasile Antoniac and published by Springer. This book was released on 2016-05-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook describes several current trends in the development of bioceramics and biocomposites for clinical use in the repair, remodelling, and regeneration of bone tissue. Comprehensive coverage of these materials allows fundamental aspects of the science and engineering to be seen in close relation to the clinical performance of dental and orthopaedic implants. Bioceramics and biocomposites appear to be the most dynamic area of materials development for both tissue engineering and implantable medical devices. Almost all medical specialties will continue to benefit from these developments, but especially dentistry and orthopaedics. In this Handbook, leading researchers describe the use of bionanomaterials to create new functionalities when interfaced with biological molecules or structures. Also described are technologies for bioceramics and biocomposites processing in order to fabricate medical devices for clinical use. Another important section of the book is dedicated to tissue regeneration with development of new matrices. A targeted or personalized treatment device reduces drug consumption and treatment expenses, resulting in benefits to the patient and cost reductions for public health systems. This authoritative reference on the state-of-the-art in the development and use of bioceramics and biocomposites can also serve as the basis of instructional course lectures for audiences ranging from advanced undergraduate students to post-graduates in materials science and engineering and biomedical engineering.
Download or read book Dental Hard Tissues and Bonding written by George Eliades and published by Springer Science & Business Media. This book was released on 2005-12-06 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively reviews bonding to enamel, dentin and cementum and analyses relevant adhesion mechanisms. It is addressed to both the dental researcher and the clinician. Emphasis is placed on the characterization of material interfaces with dental tissues in situ. The volume also stresses the importance of appropriate experimental protocol design in facilitating clinically-relevant research methods, clarifies the mechanisms of adhesion of polymeric materials to hard dental tissues and furnishes a handy reference for routine clinical procedures in restorative and prosthetic dentistry as well as orthodontics. The book introduces important aspects of the chemistry of dental materials and their adaptation to dental hard tissues. It also analyses interfacial phenomena occurring during application of materials, including mechanical properties, and structural-compositional alterations. The text presents the current instrumental approaches in studying related issues and a summary of the current status of theories concerning bonding to dental tissues. This work, in its scope and scientific content, provides an in-depth view of the way in which aesthetic dentistry is currently being practiced.
Download or read book Biomedical Therapeutic and Clinical Applications of Bioactive Glasses written by Gurbinder Kaur and published by Woodhead Publishing. This book was released on 2018-09-22 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomedical, Therapeutic and Clinical Applications of Bioactive Glasses is an essential guide to bioactive glasses, offering an overview of all aspects of the development and utilization of this cutting-edge material. The book covers vital issues, including mesoporosity, encapsulation technologies, scaffold formation and coatings for a number of applications, including drug delivery, encapsulation, scaffolds and coatings. Readers will gain a strong understanding and practical knowledge of the therapeutic aspects of bioceramics, with a focus on glasses from a clinical point-of- view. Researchers, students and scientists involved in bioceramics, bone tissue engineering, regeneration and biomedical engineering will find this to be a comprehensive resource. - Presents detailed coverage of bioactive glasses, including technologies and applications - Includes all the major development areas related to bioactive glasses, enabling readers to understand the latest research - Considers the potential future developments of bioactive glasses as a drug carrier
Download or read book Biocomposites for Industrial Applications written by Chandrasekar Muthukumar and published by Elsevier. This book was released on 2023-09-18 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biocomposites for Industrial Applications: Construction, Biomedical, Transportation and Food Packaging reviews the properties and performance of these materials, with a focus on their intended applications. Sections cover their properties and performance, including processing conditions, structure and property relations. For biomedical applications, researchers need a broad understanding of conceptual design, physico-chemical properties, and cytotoxicity (orthopedic implants). As the usage of biocomposites has increased significantly over recent years, mainly due to the advantages these materials have when compared to synthetic composites, such as (i) renewability (ii) eco-friendly components, (iii) biodegradable aspects, and (iv) non-toxicity, this book provides a great update on the technology. These advantages will help to attract wider use in more lightweight-based applications such as (i) construction and building (ii) biomedical (iii) transportation (automotive, marine, and aerospace), and (iv) in food packaging. - Covers recent applications in construction, transportation, food packaging and biomedical sectors - Focuses on materials requirements, factors governing the properties of these materials and durability - Discusses factors effecting processing conditions and recent advancements in design and fabrication - Provides a detailed outline of experimental research in each chapter
Download or read book Expert Level of Dental Resins Material Science Technology written by Ralf Janda and published by tredition. This book was released on 2022-09-12 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resin materials are broadly used in dentistry for almost all indications, and they will gain even more importance in the future. Especially the increasing performance and efficiency of the CAD/CAM technology and 3D-printing open possibilities to use resins which were not used up to now in dentistry. Besides dentists, dental students or dental technicians, there are many other specialists such as researchers, material scientists, industrial developers or experts of adjoining professional disciplines who are technically engaged in dental resins. The "Expert Level" is the third book of the series "Dental Resins - Material Science & Technology". The "Expert Level" includes all information and data presented in the "Basic Level" and "Advanced Level" of this series, but enormously expands the knowledge base. From a total database of 8.198 references, 1.707 were selected and used for this textbook. It comprises more than 1,000 manuscript pages, 384 figures and 124 tables. The "Expert Level" describes very accurately and comprehensively all details of the material science and technology of dental polymers and composites. Furthermore, their production methods and applications are discussed in detail. Therefore, this book is a unique treatise of the complete present knowledge about dental resins and dental resin composites. This includes the discussion of the - raw/starting materials together with the explanation and presentation of their chemical structures and properties, their CAS Numbers and the names of the manufacturers. - amounts of the raw/starting materials usually used to formulate the finished products. - important material and toxicological properties of the starting materials and the finished products. - detailed description of the production processes of essential starting materials such as the syntheses of essential monomers, the silanization of inorganic fillers or the manufacturing of unfilled and filled splinter polymers. - detailed description of the formulation and the properties of the finished products. Furthermore, for many commercial endproducts rather detailed formulations as well as the exact production processes are described. All ISO standards that are relevant for dental resins are listed, too. Furthermore, many essential methods to test the mechanical, chemical and toxicological properties are also presented and explained. The "Expert Level" enables every scientist with a good chemical knowledge not only to understand how dental polymers function, but also to develop new and improved products.
Download or read book Bioceramics Volume 12 Proceedings Of The 12th International Conference On Ceramics In Medicine written by T Yoshikawa and published by World Scientific. This book was released on 1999-10-01 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topics covered in this volume include: biomedical applications; fabrication processes; structural, physical and biological analyses; and clinical applications of ceramics. In addition, the book presents discussions on recent bioceramic technologies for the development of ceramics with tissue-bonding properties. Recent advances in the development of joint replacements using ceramics are also discussed.The book will prove to be invaluable for materials scientists, bioengineers, molecular and cellular biologists, bone biologists, and clinicians.
Download or read book Developing Bioactive Materials for Dental Applications written by Mary Anne Sampaio Melo and published by Frontiers Media SA. This book was released on 2021-10-01 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hybrids Part A Hybrids for Tissue Regeneration written by Kai Zheng and published by Frontiers Media SA. This book was released on 2021-10-01 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymerization and Shrinkage Stress Formation of Experimental Resin Composites Doped with Nano Vs Micron sized Bioactive Glasses written by Franziska Jäger and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
