Multitechnique characterization of articular surfaces of retrieved ultrahigh molecular weight polyethylene acetabular sockets

Magnissalis, Evangelos A.; Εliades, George; Eliades, Theodore

doi:10.1002/(sici)1097-4636(1999)48:3<365::aid-jbm22>3.0.co;2-t

Cited by 11 publications

(6 citation statements)

References 26 publications

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“…This mode of extracellular mineralization is involved in the formation of ectopic calcified deposits on tissues and materials, including teeth, orthodontic rackets, adhesives, headgear wires, NiTi wires, elastomers, and dental materials, and orthopaedic biomaterials. 11 - 25 …”

Section: In Vivo Ageing Of Aligners and Composites: Surface ...mentioning

confidence: 99%

Intraoral ageing of aligners and attachments: Adverse effects on clinical efficiency and release of biologically-active compounds

Eliades,

Eliades

2024

Korean J Orthod

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The clinical application of aligners is accompanied by the ageing of the polymer appliances and the attachments used, which may result in inefficiency in reaching the predicted range of tooth movement, and release of compounds and microplastics in the oral cavity as a result of the friction, wear and attrition of the aligner and composite attachment. The purpose of this review is to present the mechanism and effects of in vivo ageing; describe the hydrolytic degradation of aligners and enzymatic degradation of composite attachments; examine the ageing pattern of aligners in vivo , under actual clinical scenarios; and identify a link to the discrepancy between predicted and actual clinical outcome. Lastly, strategies to deal with three potentially critical issues associated with the use of aligners, namely the necessity of weekly renewal, the dissimilar mechanical properties of aligner and attachment resulting in wear and plastic deformation of the aligner, and the development of integuments and biofilms with microbial colonization of the appliance, are discussed.

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Section: In Vivo Ageing Of Aligners and Composites: Surface ...mentioning

confidence: 99%

Intraoral ageing of aligners and attachments: Adverse effects on clinical efficiency and release of biologically-active compounds

Eliades,

Eliades

2024

Korean J Orthod

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“…Wear mechanism is surface fatigue where the PE part is usually by far more affected than the hard counterbody. Surface fatigue is associated with repetitive loading and generates wear features such as pitting and delamination [ 133 , 134 ]. The most common wear appearance in PE cups is polishing.…”

Section: Clinical Aspects Of Bearing Surfacementioning

confidence: 99%

Recent updates for biomaterials used in total hip arthroplasty

Yoon

2018

Biomater Res

130

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BackgroundTotal hip arthroplasty (THA) is probably one of the most successful surgical interventions performed in medicine. Through the revolution of hip arthroplasty by principles of low friction arthroplasty was introduced by Sir John Charnley in 1960s. Thereafter, new bearing materials, fixation methods, and new designs has been improved. The main concern regarding failure of THA has been the biological response to particulate polyethylene debris generated by conventional metal on polyethylene bearing surfaces leading to osteolysis and aseptic loosening of the prosthesis. To resolve these problems, the materials of the modern THA were developed since then.MethodsA literature search strategy was conducted using various search terms in PUBMED. The highest quality articles that met the inclusion criteria and best answered the topics of focus of this review were selected. Key search terms included ‘total hip arthroplasty’, ‘biomaterials’, ‘stainless steel’, ‘cobalt-chromium’, ‘titanium’, ‘polyethylene’, and ‘ceramic’.ResultsThe initial search retrieved 6921 articles. Thirty-two articles were selected and used in the review.ConclusionThis article introduces biomaterials used in THA and discusses various bearing materials in currentclinical use in THA as well as the newer biomaterials which may even further decrease wear and improve THA survivorship.

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“…For example, UHMWPE debris produced by knee replacement prostheses tends to be larger than that produced by hip replacements (some studies indicate an average of three times to an order of magnitude larger) indicating a likely difference in the mechanism of debris production [65,66].One possible explanation for this particular dissimilarity is that in the conforming hip joint adhesive/abrasive wear predominates, while in the less conforming knee a sliding motion generates debris by delamination at the polymer surface [67][68][69] (⊡ Fig. 55-7).…”

Section: Osteolysismentioning

confidence: 99%

Total Knee Arthroplasty

Bellemans¹,

Ries²,

Victor³

2005

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The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absende of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.Product leability: The publishers cannot guarantee the accuracy of any information about dosage and application thereof contained in this book. In every individual case the user must check such information by consulting the relevant literature. SPIN 10964880Printed on acid-free paper 18/5141 -5 4 3 2 1 0 V Preface Few domains in orthopedics have evolved so dramatically over the past decades as our knowledge and understanding of knee physiology and knee replacement surgery.Long ago are the days that hinged knees or unconstrained flat on flat components with gamma irradiated in air polyethylene were the standard. Since those days, an unstoppable evolution has taken place towards refinement and better results.Some designs and theories have thereby withstood the test of time better than others,while some debates have been significant. Cemented or uncemented fixation, resurfacing of the patella and mobile or fixed bearings, are some of the issues that are still open today. Despite the fact that some issues have dominated the literature and the public forum during the eighties and nineties, most of us have realised in the meantime that these issues are less fundamental in our quest towards optimal knee joint restoration.In addition, we have discovered previously neglected or unknown aspects. New terminology and technology has emerged. Paradoxical motion, lateral lift off, asymmetrical roll-back were never heard of during the nineties, and are public domain in today's knee forum. Computer assisted surgery, minimal invasive technology, cross-linked polyethylene and ceramics have entered the world of knee surgeons. All with the same goal in mind; to optimize the performance of the knees we treat.This book attempts to assemble all these evolutions and new insights into a standard work,in an attempt to provide the reader with a current update on the most modern views on knee arthroplasty.Experts from all over the world have contributed to achieve this goal. All have published extensively in peerreviewed journals, and have taken the opportunity to bundle their knowledge in the allocated chapter in this book, thereby providing the reader with a unique work summarising the current scientific knowledge on knee arthroplasty.The editors are grateful to them for their excellent contributions to this work, and hope with all of those who were involved, that this book may serve as a modern basis for achieving better performance in knee arthroplasty.Finally, the editors would like to express their special and sincere gratitude to the publishing editor Thomas Guenther from Springer Verlag for his competent and professional support, which allowed us to present this work according to the highest standards available today in medical literature. Thomas Guenther, who always spoke...

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Multitechnique characterization of articular surfaces of retrieved ultrahigh molecular weight polyethylene acetabular sockets

Cited by 11 publications

References 26 publications

Intraoral ageing of aligners and attachments: Adverse effects on clinical efficiency and release of biologically-active compounds

Intraoral ageing of aligners and attachments: Adverse effects on clinical efficiency and release of biologically-active compounds

Recent updates for biomaterials used in total hip arthroplasty

Total Knee Arthroplasty

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