Download or read book Laser Etching of Enamel Surfaces Bond Strength and SEM Evaluation written by Douglas F. Wright and published by . This book was released on 1992 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lasers in Dentistry Current Concepts written by Donald J. Coluzzi and published by Springer Nature. This book was released on 2024-01-08 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, now in an extensively revised second edition, provides information on the basic science and tissue interactions of dental lasers and documents the principal current clinical uses of lasers in every dental discipline. The applications of lasers in restorative dentistry, endodontics, dental implantology, pediatric dentistry, periodontal therapy, and soft tissue surgery are clearly described and illustrated. Information is also provided on laser-assisted multi-tissue management, covering procedures such as crown lengthening, gingival troughing, gingival recontouring, and depigmentation. The closing chapters look forward to the future of lasers in dentistry and the scope for their widespread use in everyday clinical practice. When used in addition to or instead of conventional instrumentation, lasers offer many unique patient benefits. Furthermore, research studies continue to reveal further potential clinical applications, and new laser wavelengths are being explored, developed, and delivered with highly specific power configurations to optimize laser–tissue interaction. This book will bring the reader up to date with the latest advances and will appeal to all with an interest in the application of lasers to the oral soft and/or hard tissues.
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 2005-07-22 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text comprehensively reviews bonding to enamel, dentin and cementum, and analyses relevent adhesion mechanisms. Emphasis is placed on the characterization of material interfaces with dental tissues in situ.
Download or read book Biomaterials written by Rosario Pignatello and published by BoD – Books on Demand. This book was released on 2011-11-14 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: These contribution books collect reviews and original articles from eminent experts working in the interdisciplinary arena of biomaterial development and use. From their direct and recent experience, the readers can achieve a wide vision on the new and ongoing potentialities of different synthetic and engineered biomaterials. Contributions were selected not based on a direct market or clinical interest, but based on results coming from very fundamental studies. This too will allow to gain a more general view of what and how the various biomaterials can do and work for, along with the methodologies necessary to design, develop and characterize them, without the restrictions necessarily imposed by industrial or profit concerns. The chapters have been arranged to give readers an organized view of this research area. In particular, this book contains 25 chapters related to recent researches on new and known materials, with a particular attention to their physical, mechanical and chemical characterization, along with biocompatibility and hystopathological studies. Readers will be guided inside the range of disciplines and design methodologies used to develope biomaterials possessing the physical and biological properties needed for specific medical and clinical applications.
Download or read book The Effectiveness of the 308 NM Excimer Laser for Pretreatment of Enamel Surface written by David Phoon Choe and published by . This book was released on 1991 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microtensile Bond Strength Evaluation of an Etch and Rinse Bonding System to Cervical Sclerotic Dentin as a Function of Surface Treatment written by Jennifer Barnes McCants and published by . This book was released on 2004 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lasers in Dentistry written by Patricia M. Freitas and published by John Wiley & Sons. This book was released on 2015-02-17 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lasers have become an increasingly useful tool in conventional dental practice. Their precision and less invasive quality make them an attractive technology in esthetic and pediatric dentistry, oral medicine, and a range of other dental procedures. Lasers in Dentistry: Guide for Clinical Practice is a comprehensive, yet concise and easy-to-use guide to integrating lasers into conventional clinical practice. The book begins by providing the reader a thorough understanding of how lasers work and their varied effects on oral tissues. Subsequent chapters are organized by procedure type, illustrating common clinical techniques with step-by-step illustrations and case examples. In addition, each chapter provides an overview of the latest research for use in clinical practice. More comprehensive than at atlas yet practical and clinically oriented in its approach, Lasers in Dentistry is an essential tool for practitioners and students looking to broader their skill set in laser dentistry.
Download or read book Effects of Etching Duration on the Surface Roughness Surface Loss Flexural Strength and Shear Bond Strength to a Resin Cement of E max Cad Glass Ceramic written by Hanan Al-Johani and published by . This book was released on 2017 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: EFFECTS OF ETCHING DURATION ON THE SURFACE ROUGHNESS, SURFACE LOSS, FLEXURAL STRENGTH OF E. MAX CAD GLASS CERAMIC AND SHEAR BOND STRENGTH TO A RESIN CEMENT Background: Long-term retention of ceramic restorations is dependent on the bond strength of the luting resin to both the tooth and porcelain substrates. In order to achieve successful bonding, the surface of the porcelain substrate must be modified to increase the surface roughness, and this can be achieved chemically by hydrofluoric (HF) acid etching. However, prolonged HF acid etching has shown to have a weakening effect on the evaluated lithium disilicate glass-ceramics. Therefore, it is essential to quantify the required etching duration of HF acid to minimize the possible deleterious effects on ceramic strength while maximizing the bond strength to tooth structure. Objectives: To evaluate the effects of HF acid etching duration on the surface roughness, surface loss, flexural strength, and shear bond strength of IPS e.max CAD (Ivoclar Vivadent) lithium disilicate-based glass ceramic to a resin cement. Hypothesis: The differences in HF acid etching durations will not have a significant effect on the surface roughness, surface loss, flexural strength, or shear bond strength of IPS e.max CAD to a resin cement. Methods: 168 specimens were prepared from IPS e.max CAD blocks. All specimens were polished and sonically cleaned in distilled water. Specimens were fired in the vacuum pump furnace according to the manufacturer's instructions. Specimens were then divided into 4 groups, according to etching durations, then further divided into 3 subgroups, according to the properties tested. Group A was not etched (control), Groups B, C and D were etched with 5-percent HF acid (IPS Ceramic Etching gel, Ivoclar Vivadent) for 20 s, 60 s and 90 s respectively. The morphologies of both etched and non-etched surfaces in specimens of subgroup 1 of each etching group (n = 16/group) were observed under scanning electron microscopy (SEM). In addition, non-contact surface profilometry (Proscan 2000) was used to calculate the surface loss and to examine the surface roughness of the etched ceramic surfaces and roughness values (Ra, Rq) were documented for each group. Furthermore, etched specimens of subgroup 2 (n = 16/group) were silanated (Monobond Plus, Ivoclar Vivadent) and cemented with a resin cement (Multilink Automix, Ivoclar Vivadent). The shear bond strength (SBS) was measured using a universal mechanical testing machine. For each etching group, subgroup 3 specimens (n = 10/group) were loaded to failure in a three-point bending test to measure their flexural strength values using a universal mechanical testing machine. Data for surface roughness, surface loss, and flexural strength were analyzed using one-way analysis of variance (ANOVA), to identify the significant effects of different HF acid etching durations. Data for shear bond strength test were analyzed using two-way ANOVA to test the effects of etching duration, storage for 24 hours/thermocycling, and their interaction. All pair-wise comparisons from ANOVA analysis were made using Fisher's Protected Least Significant Differences to control the overall significance level at 5 percent. Results: Difference in HF etching durations did not have a significant effect on surface roughness values Ra or Rq (p = 0.3408; p = 0.3245) respectively, but had a significant effect on surface loss (p = 0.0006). SBS values were not significantly different between experimental groups (p = 0.4650); however, SBS values after 24-h storage were significantly higher than that found after thermocycling (p = 0.0166) among different etching durations. Finally, different HF etching durations did not have a significant effect on flexural strength values (p = 0.1260). Conclusion: Within the limitations of this study, different HF etching durations did not have a significant effect on surface roughness, flexural strength, or shear bond strength of IPS e.max CAD. However, the different etching durations significantly affected the surface loss of the lithium disilicate glass ceramics.
Download or read book Principles in Contemporary Orthodontics written by Silvano Naretto and published by BoD – Books on Demand. This book was released on 2011-11-25 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontics is a fast developing science as well as the field of medicine in general. The attempt of this book is to propose new possibilities and new ways of thinking about Orthodontics beside the ones presented in established and outstanding publications available elsewhere. Some of the presented chapters transmit basic information, other clinical experiences and further offer even a window to the future. In the hands of the reader this book could provide an useful tool for the exploration of the application of information, knowledge and belief to some orthodontic topics and questions.
Download or read book Surface Modification of Enamel Using Near UV Laser Irradiation written by Cameron R. Wheeler and published by . This book was released on 2002 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASDC Journal of Dentistry for Children written by and published by . This book was released on 1998 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultra Structural Aspects of Human Enamel Surface Pretreatments written by Jiajun Zhu and published by . This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Ultra-structural Aspects of Human Enamel Surface Pretreatments" by Jiajun, Zhu, 朱嘉珺, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Enamel acid etching has been studied for almost 60 years, i.e., since successful enamel adhesion was first achieved. It was proposed to be due to the micro-mechanical interlocking based on the use of phosphoric acid to etch the so-called ideal etching pattern etching, at certain conditions. According to the systematically screened 2500 non-duplicated publications, with the inclusion of 175 laboratory studies and 18 clinical trials, phosphoric acid etching was found and is still considered to produce promising bonding on intact enamel surfaces. However, other etching agents, such as poly(acrylic acid), self-etching primers (SEP), non-rinse conditioners and other acids could also contribute to satisfactory bond strengths without creating too high surface roughness, etching depth and/or morphological alteration. Thus, an ideal etching pattern might not be necessary in enamel adhesion. An unduly use of ideal etching pattern in literature to assess the enamel adhesion seems more prone to the flaw observations and vague conclusions. Therefore, a fundamental understanding of enamel adhesion is vital. In this thesis, an ultra-structural investigation based on chemical composition, crystallography, micro-roughness, morphology, micro-hardness and surface tension, on intact human mature enamel with various pretreatment methods were studied, with an ethical approval (HKWC-HKU Cluster REC/IRB document No.: UW13-262). The current study found that phosphoric acid etching by liquids and gels could remove the superficial aprismatic enamel layer. The acid etching could also generate a rougher, softer and porous enamel surface, whilst commercial SEPs that contain 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) and 2-(methacryloyloxy)ethyl phosphates (HEMA-phosphates) left excess amounts of phosphates onto enamel surfaces and showed a minor demineralization effect. Furthermore, mono-HEMA-phosphate solutions could demonstrate both mild etching and a chemically reactive effect on the intact enamel, particularly when at 40 v/v%. All the pretreatment methods used in this study could effectively increase enamel surface free energy, i.e. physical adsorption deemed to be the critical factor rather than micro-mechanical adhesion in enamel adhesion. Apparently, the measurement of surface free energy was probably more appropriate than morphological examination to evaluate the enamel surface pretreatment method. In addition, due to the insignificant etching effect, the definition of "self-etching" might need to be re-considered. To conclude, the current ultra-structural investigation on various intact human enamel pretreatment methods may offer new insights about the basics and fundamental theory for enamel adhesion. This may yet lead to a better development of primers to serve and enhance clinical dentistry. DOI: 10.5353/th_b5387962 Subjects: Dental enamel - Ultrastructure
Download or read book Comprehensive Esthetic Dentistry written by Florin Lăzărescu and published by Quintessenz Verlag. This book was released on 2019-09-16 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nothing can replace the sense of professional fulfillment and personal reward that comes from successfully restoring a patient's smile. This book, which serves as a complete primer on esthetic dentistry, is aimed at that precise reward. Informed by the latest scientific research and clinical evidence, the authors provide readers with keen insight into the artistic aspects essential to achieving a truly esthetic outcome. Preliminary chapters cover esthetic analysis, effective treatment planning, use of digital dental photography, and the importance of interdisciplinary collaboration. Further chapters outline effective treatment protocols, including the principles of ultraconservative restoration, tooth whitening, anterior and posterior all-ceramic restorations, in-office CAD/CAM technology, implant placement and soft tissue management in the esthetic zone, and the usage of minimally invasive procedures. This book, in its extensive knowledge and passionate voice, represents the union of function and beauty in dentistry, and in doing so, establishes itself as a comprehensive resource in the field of dental esthetics.
Download or read book Orthodontic Applications of Biomaterials written by Theodore Eliades and published by Woodhead Publishing. This book was released on 2016-11-22 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orthodontic Applications of Biomaterials: A Clinical Guide reviews the applications of biomaterials and their effects on enamel preparation, bonding, bracket and archwire ligation, mechanotherapy, debonding, and long-term enamel structural, color, and surface effects. The book provides a step-by-step analysis of the phenomena occurring, their clinical importance, and their underlying cause without the use of complex mathematical or physical-chemical analyses, with the goal of providing 'digestible' evidence for the clinician. - Serves as a reference source of the spectrum of biomaterials used in orthodontics - Presents the most current evidence of state-of-the-art methods of materials research - Provides substantiation for the effects occurring during the materials' uses
Download or read book Lasers in Dentistry written by and published by . This book was released on 2007 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Shear Bond Strength of Resin Modified Glass Ionomer Cement and Enamel Surface Condition with Different Surface Preparation in Vitro Study written by Ayman Anaam Saied El Nafar and published by . This book was released on 2013 with total page 180 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.
