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Author : M. P. S. Sethusa
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (226 download)
Download or read book Bond Strength Evaluation of Adhesive Systems Using Metal Orthodontic Brackets written by M. P. S. Sethusa and published by . This book was released on 2006 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Patti Ann Hawkins Jacob
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (244 download)
Download or read book The Effects of an Air-powder Polishing Device on the Shear Bond Strength of Two Orthodontic Metal Bracket Adhesive Systems written by Patti Ann Hawkins Jacob and published by . This book was released on 1991 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this investigation was to evaluate the effects of air-powder polishing on shear bond strength in vitro for two metal bracket adhesive systems currently in use for direct orthodontic bonding procedures. Ninety-six third molar teeth with flattened enamel surfaces were randomly assigned to be bonded with metal brackets using either a two paste or a no-mix orthodontic adhesive resin. Thwelve samples in each treatment group were air-powder polished for 0, 15, 30, or 60 seconds. Each bracket adhesive bond was then tested for shear strength using the Instron Universal Testing Device. Scanning electron microscopy determined the fracture pattern of representative samples from each treatment group. Mean shear bond strength values for each treatment group were calculated and expressed in magapascals (MPa). Values from baseline to 60 seconds varied from 22.9 ± 1.9 MPa to 18.2 ± 4.1 MPa for the two paste system and from 15.5 ± 2.1 MPa to 14.6 ± 1.9 MPa for the no-mix adhesive. Differences between the adhesive systems at all air-powder polishing times were statistically significant (p d".05). Statistical analysis by a two-way ANOVA in combination with the Newman-Keuls Multiple Range Test for pairwise mean comparisons determined a differential effect of air-powder polishing on the bond strength of the two adhesive systems. After 60 seconds of air-powder polishing, results showed a significant decrease (p d".05) in the mean bond strength of the two paste adhesive resin when compared to baseline, 15, and 30 second treatments. No significant time effect of air-powder polishing was found for the no-mix adhesive system. SEM analysis of the bond failure sites showed tooth-adhesive, within adhesive and bracket-adhesive fracture patterns for the viewed samples of each adhesive type and air-powder polishing treatment time. Fractures within tooth structure were also noted for the two paste system, indicating strong enamel-adhesive-bracket bonds. Differences in the fracture pattern of the two paste 60 second air-powder polishing group may account for the differential effect of treatment. Although in vitro results showed decreased bond strength for the two paste system, use of air-powder polishing for the routine maintenance of the orthodontic patient should not affect clinical performance of this adhesive.
Author : DR.ARCHANA KUMARI
Publisher : Book Rivers
ISBN 13 : 9355152744
Total Pages : 196 pages
Book Rating : 4.3/5 (551 download)
Download or read book BONDING IN ORTHODONTICS written by DR.ARCHANA KUMARI and published by Book Rivers. This book was released on 2022-03-14 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of orthodontic materials in the past 5 decades has been a unique progress curve characterized by periods of intense activity with many developments followed by long quiescent intervals. An example of the delay in adopting the advances in dentistry might well be illustrated by the acid-etching technique, which was introduced in the mid 1950s1 and became universally accepted in the 1960s. It took more than a decade for this practice to become standard procedure in orthodontics on a large scale. Infact, orthodontic bonding has advanced more in last 10 years than previous 25. In the past decade, we have witnessed unprecedented progress in bonding to enamel with various materials techniques and auxiliaries involving glass ionomer bonding, self-etching primers, and new, powerful light-curing sources, along with self-ligating brackets and a different treatment concept, the Invisalign technique.
Author : Pradeep Subbaiah
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783847344421
Total Pages : 96 pages
Book Rating : 4.3/5 (444 download)
Download or read book Evaluation Of The S.B.S. Of a Composites Used For Orthodontic Bonding written by Pradeep Subbaiah and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following conclusions are drawn from this comparative in-vitro study on the shear bond strength and debonding characters of Transbond XT, Esthet-X Flow and Filtek Z-350 using metal brackets Filtek Z-350 has a comparable mean bond strength value (11.07+/-1.03 MPa) like that of Transbond XT (11.58+/-1.3 MPa). Esthet-X Flow has slightly lower mean bond strength value (10.70+/-2.0 MPa) compared Filtek Z-350 and Transbond XT. All the three adhesives exhibited clinically acceptable bond strength. 60-70% of all the three adhesives exhibited cohesive type of bond failure. The efficacy of the flowable composites as a bonding agent needs invivo and clinical assessment through a survival analysis. Filtek Z-350 and Esthet-X flow exhibited problems with handling properties and flowability. Drifting of brackets was noted and pressure was needed for positioning the bracket with Filtek Z-350 and Esthet-X flow. The flow property and viscosity should be balanced to obtain optimal consistency to achieve optimal bond strength and improve handling property for Filtek Z-350 and Esthet-X flow.
Author : Dr. Chandresh Shukla
Publisher : Book Rivers
ISBN 13 : 9355151225
Total Pages : 64 pages
Book Rating : 4.3/5 (551 download)
Download or read book DIFFERENT ORTHODONTIC BONDING AGENTS: - THEIR MYTHS AND TRUTHS written by Dr. Chandresh Shukla and published by Book Rivers. This book was released on 2022-05-24 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Boyd O. Whitlock
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (264 download)
Download or read book A Comparative Study of Shear Bond Strengths of Different Combinations of Adhesive Systems and a Porcelain Priming Agent when Bonding Ceramic Brackets to Porcelain written by Boyd O. Whitlock and published by . This book was released on 1992 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this study was to compare the bond strengths of three adhesive systems (two-paste, no-mix, and one light-activated) when used alone and combined with a porcelain priming agent to bond ceramic brackets to porcelain surfaces. Sixty porcelain specimens were randomly assigned to the six different treatment groups. One half of the groups were bonded with the porcelain priming agent and one of the adhesive systems and the other half with one of the adhesive systems without the priming agent. The shear bond strengths, expressed in megapascals (MPa), of all specimens were tested, using an Instron testing machine, 10 minutes after being bonded. The surface of the porcelain and the bracket base were examined, using the scanning electron microscope (SEM), to determine the bond failure patterns and check the prcelain surface for the presence of cracks and fractures. Across the three different adhesive systems, mean shear bond strength measurements ranged from 6.3-7.5 MPa when the porcelain primer was used and from 1.8-3.8 when the porcelain primer was not used. There was a statistically significant difference within each adhesive between those samples with the priming agent (mean shear bond strength of 6.5 ± 0.8, 7.5 ± 1.0, and 6.3 ± 1.2) and those without the priming agent (mean shear bond strength of 3.8 ± 0.4, 1.8 ± 1.8, nad 2.6 ± 1.3) (p ≤ 0.5). Differences between the three adhesives were not statistically significant (p ≤ .05). Evaluation of the bond failure sites, using the SEM, revealed failures at the porcelain-adhesive interface, within the adhesive and at the bracket-adhseive interface for the porcelain primer samples. The samples that were bonded with the different adhesives only displayed a failure exclusively at the porcelain-adhesive interface. The failure patterns were verified by qualitative energy dispersive x-ray analysis (EDS). It can be concluded from this study that using any of the three adhesive systems combined with the porcelain priming agent will provide sufficient bond strength to withstand normal orthodontic forces and not damage the surface of the porcelain when debonded.
Author : Huma Iftekhar
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783845438405
Total Pages : 88 pages
Book Rating : 4.4/5 (384 download)
Download or read book Bond Strength Evaluation of Three Different Generation of Adhesives written by Huma Iftekhar and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The widespread demand for, and use of dental adhesives has fueled an intense development of better and easier dental adhesives in rapid succession and dentists have literally been inundated with successive "generations" of adhesive materials. The "generational" definitions help in identification of chemistries involved, the strength of dentinal bond and the ease of use for the practitioner.The clinical use of resin composites has expanded considerably over the past few years due to increased esthetic demands by patients, new improved formulations and simplification of bonding procedures. Evaluation of bond strength provides a screening mechanism use of adhesives and an indication of the potential for their clinical success.the purpose of this study was to find and compare the shear bond strength of three different generation of adhesive systems fifth, sixth and seventh to dentin of human molars using same composite.
Author : Lawrence B. Evans
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.3/5 (91 download)
Download or read book Factors Affecting Bond Strength of No-mix Orthodontic Adhesive Systems written by Lawrence B. Evans and published by . This book was released on 1984 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Don Burns
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (271 download)
Download or read book Evaluation of the Tensile Bond Strength of Orthodontic Bracket Bases Using Glass Ionomer Cement as an Adhesive written by Richard Don Burns and published by . This book was released on 1992 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Silvano Naretto
Publisher : BoD – Books on Demand
ISBN 13 : 9533076879
Total Pages : 600 pages
Book Rating : 4.5/5 (33 download)
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.
Author : Brian John DeVoe
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (643 download)
Download or read book Evaluation of the Shear Bond Strength of Orthodontic Brackets Using a Self-etching Primer System Under Dry and Wet Conditions written by Brian John DeVoe and published by . This book was released on 2003 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1828 pages
Book Rating : 4.3/5 (243 download)
Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ismail Amra
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.:/5 (569 download)
Download or read book An in Vitro Evaluation of a New Self-etching Adhesive for Orthodontic Bracket Bonding written by Ismail Amra and published by . This book was released on 2004 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conditioning and priming of unground enamel using conventional acid etchants and bonding resins has been recommended for effective bonding in orthodontics. The use of the newer single-step self-etching adhesives which etch, prime and apply the resin bonding agents simultaneously without rinsing, has been increasing in popularity. The purpose of this study was to compare the shear-peel bond strength and the amount of adhesive remaining on the tooth after debonding of a traditional two-step etch and prime technique, with a single-step alternative, when used with a composite resin adhesive system and a resin-modified glass ionomer cement system.
Author : Leon V. Siomka
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.3/5 (91 download)
Download or read book Bond Strength of Treated Metal Brackets written by Leon V. Siomka and published by . This book was released on 1984 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wiliam A. Brantley
Publisher : Thieme
ISBN 13 : 1604060654
Total Pages : 513 pages
Book Rating : 4.6/5 (4 download)
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.
Author : Philip T. Dickinson
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.3/5 (91 download)
Download or read book Evaluation of Fourteen Direct Bonding Orthodontic Bases written by Philip T. Dickinson and published by . This book was released on 1980 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael David Segall
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (971 download)
Download or read book Shear Bond Strength of Metal Brackets to Zirconia Conditioned with Various Primer-adhesive Systems written by Michael David Segall and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
