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https://www.readbyqxmd.com/read/29666713/comprehensive-treatment-of-severe-periodontal-and-periimplant-bone-destruction-caused-by-iatrogenic-factors
#1
Gregor-Georg Zafiropoulos, Andreas Parashis, Taha Abdullah, Evangelos Sotiropoulos, Gordon John
Dental implant success requires placement after periodontal therapy, with adequate bone volume, plaque control, primary stability, control of risk factors, and use of well-designed prostheses. This report describes the surgical and prosthetic management of a patient with severe iatrogenic periodontal/periimplant bone destruction. Methods. A 55-year-old female smoker with fixed partial dentures (FPDs) supported on teeth and implants presented with oral pain, swelling, bleeding, and a 10-year history of multiple implant placements and implants/prosthesis failures/replacements...
2018: Case Reports in Dentistry
https://www.readbyqxmd.com/read/29665177/prosthodontic-complications-of-metal-ceramic-and-all-ceramic-complete-arch-fixed-implant-prostheses-with-minimum-5-years-mean-follow-up-period-a-systematic-review-and-meta-analysis
#2
REVIEW
Chi Kin Kenneth Wong, Unnati Narvekar, Haralampos Petridis
PURPOSE: The purpose of this systematic review and meta-analysis was to review and analyze the prosthodontic complications, survival, and success of metal-ceramic (MC) and all-ceramic (AC) complete-arch fixed implant dental prostheses (CFIDPs) with a minimum mean follow-up period of 5 years. METHODS: A structured literature search was conducted using 3 electronic databases (MEDLINE, the Cochrane Library, Web of Science) for clinical studies reporting on prosthodontic complications of metal-ceramic and/or all-ceramic CFIDPs published between 2000 and 2016...
April 17, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29662807/mechanical-versus-tissue-aortic-prosthesis-in-sexagenarians-comparison-of-hemodynamic-and-clinical-outcomes
#3
Jongbae Son, Yang Hyun Cho, Dong Seop Jeong, Kiick Sung, Wook Sung Kim, Young Tak Lee, Pyo Won Park
Background: The question of which type of prosthetic aortic valve leads to the best outcomes in patients in their 60s remains controversial. We examined the hemodynamic and clinical outcomes of aortic valve replacement in sexagenarians according to the type of prosthesis. Methods: We retrospectively reviewed 270 patients in their 60s who underwent first-time aortic valve replacement from 1995 to 2011. Early and late mortality, major adverse valve-related events, anticoagulation-related events, and hemodynamic outcomes were assessed...
April 2018: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29660396/analysis-of-clinical-management-of-infected-breast-implants-and-of-factors-associated-to-successful-breast-pocket-salvage-in-infections-occurring-after-breast-reconstruction
#4
Simonetta Franchelli, Marianna Pesce, Ilaria Baldelli, Anna Marchese, Pierluigi Santi, Andrea De Maria
OBJECTIVES: Considerable efforts have been devoted so far to improve salvage procedures of infected breast implants in absence of defined guidelines or validated clinical protocols. Within a cohort of prospectively recruited patients who underwent breast reconstruction, we performed a retrospective review of proven implant infections in order to describe factors contributing to management success. METHODS: We collected data in 1293 consecutive patients who underwent two stage (expander+ prosthesis) breast reconstruction with at least 12 months of follow-up...
April 13, 2018: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29657468/changes-in-serum-chromium-levels-over-12-years-after-metasul-metal-on-metal-total-hip-arthroplasty
#5
Katsuhiko Maezawa, Masahiko Nozawa, Takahito Yuasa, Munehiko Sugimoto, Kazuo Kaneko
We reported the longitudinal changes in serum chromium levels over a minimum of 7 years postoperatively in five men and 25 women with a mean age of 60.3 years after primary unilateral total hip arthroplasty with a Metasul metal-on-metal articulation. The serum chromium ion level showed little variation (0.6-1.2 μg/L) from 2 to 12 years postoperatively in 16/30 patients after unilateral primary Metasul metal-on-metal total hip arthroplasty. On the other hand, the serum chromium level stayed high or showed gradual elevation in 8/30 patients, even though they had well-fixed and well-functioning prostheses...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29655661/oral-rehabilitation-of-patients-after-maxillectomy-a-systematic-review
#6
REVIEW
D M Dos Santos, F P de Caxias, S B Bitencourt, K H Turcio, A A Pesqueira, M C Goiato
Patients who have maxillectomy can be rehabilitated with reconstructive surgery or obturator prostheses with or without osseointegratable implants. To identify studies on possible treatments in this group, we systematically searched the Scopus, Embase, PubMed/Medline, and Cochrane databases to collect data on patients' characteristics, radiotherapy, and results related to speech, swallowing, mastication or diet, chewing, aesthetics, and quality of life. Of the 1376 papers found, six were included, and one other was included after an additional search of references...
April 11, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29655527/the-smiling-scan-technique-facially-driven-guided-surgery-and-prosthetics
#7
Alessandro Pozzi, Lorenzo Arcuri, Peter K Moy
PURPOSE: To introduce a proof of concept technique and new integrated workflow to optimize the functional and esthetic outcome of the implant-supported restorations by means of a 3-dimensional (3D) facially-driven, digital assisted treatment plan. METHODS: The Smiling Scan technique permits the creation of a virtual dental patient (VDP) showing a broad smile under static conditions. The patient is exposed to a cone beam computed tomography scan (CBCT), displaying a broad smile for the duration of the examination...
April 11, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29655407/periodontal-prosthesis-in-contemporary-dentistry
#8
REVIEW
Chiun-Lin Steven Liu
In the last 5 decades, the developments of osseointegrated titanium implants (since 1965) have led to the success of contemporary dentistry. Endosseous implant-supported restorations delivered in accordance with the traditional Branemark protocol have proven to be highly predictable. Today, implants are becoming increasingly common in dental care and provide more therapeutic options, but treatment planning and the sequencing of therapy are critical in implant-assisted and implant-supported cases. Implant prostheses give patients and dentists more options in treatment planning, but also present challenging decisions regarding implant surgery...
April 2018: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29653444/effect-of-the-distal-femoral-joint-line-on-ligament-tensions-in-flexion-with-cruciate-retaining-total-knee-prostheses
#9
Rajkishen Narayanan, Nathaniel Lenz, Jordan Alexander Werner, Michael B Cross, Dean Hughes, Scott Laster, Ran Schwarzkopf
Proper ligament tension in knee flexion within cruciate-retaining (CR) total knee arthroplasty has long been associated with clinical success; however, traditional balancing principles have assumed that the distal femoral joint line (DFJL) affects only extension. The purpose of this study was to determine the effect DFJL may have on ligament strains and tibiofemoral kinematics of CR knee designs in flexion. A computational analysis was performed using a musculoskeletal modeling system for two different knee implants, the high-flex CR (HFCR) and guided-motion CR (GMCR)...
April 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29651610/periprosthetic-femoral-fracture-as-cause-of-early-revision-after-short-stem-hip-arthroplasty-a-multicentric-analysis
#10
Sang-Min Kim, Seung-Beom Han, Kee Hyung Rhyu, Jeong Joon Yoo, Kwang-Jun Oh, Je Hyun Yoo, Kyung-Jae Lee, Seung-Jae Lim
BACKGROUND: The objective of this study was to analyze the prevalence and causes of early re-operation after hip replacement surgery using short bone-preserving stems in a large multicentre series. Specifically, we evaluated the clinical features of periprosthetic fractures occurring around short stems. METHODS: A total of 897 patients (1089 hips) who underwent primary total hip arthroplasty or bipolar hemiarthroplasty from January 2011 to February 2015 using short bone-preserving femoral stems were recruited...
April 12, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29651401/rehabilitation-of-an-auricular-defect-using-surgical-stent
#11
Mahnaz Arshad, Gholamreza Shirani, Sina Refoua
Reconstruction of a facial defect is a complex modality either surgically or prosthetically, depending on the site, size, etiology, severity, age, and the patient's expectation. The loss of an auricle, in the presence of an auditory canal, affects hearing, because the auricle gathers sound and directs it into the canal. The auricle acts as a resonator to slightly amplify lower frequency sounds and helps to localize sounds, especially in conjunction with the other ear. Osseointegrated implants have an important role in the prosthetic reconstruction of patients with craniofacial defects...
January 2018: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29649639/cobalt-ii-ions-and-nanoparticles-induce-macrophage-retention-by-ros-mediated-down-regulation-of-rhoa-expression
#12
Jing Xu, Junyao Yang, Agata Nyga, Mazdak Ehteramyan, Ana Moraga, Yuanhao Wu, Lingfang Zeng, Martin M Knight, Julia C Shelton
Histological assessments of synovial tissues from patients with failed CoCr alloy hip prostheses demonstrate extensive infiltration and accumulation of macrophages, often loaded with large quantities of particulate debris. The resulting adverse reaction to metal debris (ARMD) frequently leads to early joint revision. Inflammatory response starts with the recruitment of immune cells and requires the egress of macrophages from the inflamed site for resolution of the reaction. Metal ions (Co2+ and Cr3+ ) have been shown to stimulate the migration of T lymphocytes but their effects on macrophages motility are still poorly understood...
April 9, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29649231/application-of-quality-by-design-for-3d-printed-bone-prostheses-and-scaffolds
#13
Daniel Martinez-Marquez, Ali Mirnajafizadeh, Christopher P Carty, Rodney A Stewart
3D printing is an emergent manufacturing technology recently being applied in the medical field for the development of custom bone prostheses and scaffolds. However, successful industry transformation to this new design and manufacturing approach requires technology integration, concurrent multi-disciplinary collaboration, and a robust quality management framework. This latter change enabler is the focus of this study. While a number of comprehensive quality frameworks have been developed in recent decades to ensure that the manufacturing of medical devices produces reliable products, they are centred on the traditional context of standardised manufacturing techniques...
2018: PloS One
https://www.readbyqxmd.com/read/29643774/corrigendum-the-reality-of-myoelectric-prostheses-understanding-what-makes-these-devices-difficult-for-some-users-to-control
#14
Alix Chadwell, Laurence Kenney, Sibylle Thies, Adam Galpin, John Head
[This corrects the article on p. 7 in vol. 10, PMID: 27597823.].
2018: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/29643202/comparison-of-the-diagnostic-accuracy-of-periprosthetic-tissue-culture-in-blood-culture-bottles-to-prosthesis-sonication-fluid-culture-for-diagnosis-of-prosthetic-joint-infection-using-bayesian-latent-class-modeling-and-idsa-pji-criteria-for-classification
#15
Qun Yan, Melissa J Karau, Kerryl E Greenwood-Quaintance, Jayawant N Mandrekar, Douglas Osmon, Matthew P Abdel, Robin Patel
We have previously demonstrated that culturing periprosthetic tissue in blood culture bottles (BCBs) improves sensitivity compared to conventional agar and broth culture methods for diagnosis of prosthetic joint infection (PJI). We have also shown that prosthesis sonication culture improves sensitivity compared to periprosthetic tissue culture using conventional agar and broth methods. The purpose of this study was to compare the diagnostic accuracy of tissue culture in BCBs (subsequently referred to as tissue culture) to prostheses sonication culture (subsequently referred to as sonicate fluid culture)...
April 11, 2018: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/29642922/an-anterolateral-thigh-chimeric-flap-for-dynamic-facial-and-esthetic-reconstruction-after-oncological-surgery-in-the-maxillofacial-region-a-case-report
#16
Zoltán Lóderer, Tamás Vereb, Róbert Paczona, Ágnes Janovszky, József Piffkó
BACKGROUND: The surgical management of malignant tumors in the head and neck region often leads to functional and esthetic defects that impair the quality of life of the patients. Reconstruction can be solved with prostheses in these cases, but various types of microsurgical free flaps can provide a better clinical outcome. CASE PRESENTATION: In this case report, the tumor and parts of the involved facial muscles and nerve were excised surgically from a 42-year-old patient after a third relapse of basal cell carcinoma in the left midface...
April 11, 2018: Head & Face Medicine
https://www.readbyqxmd.com/read/29642410/latent-factors-limiting-the-performance-of-semg-interfaces
#17
Sergey Lobov, Nadia Krilova, Innokentiy Kastalskiy, Victor Kazantsev, Valeri A Makarov
Recent advances in recording and real-time analysis of surface electromyographic signals (sEMG) have fostered the use of sEMG human-machine interfaces for controlling personal computers, prostheses of upper limbs, and exoskeletons among others. Despite a relatively high mean performance, sEMG-interfaces still exhibit strong variance in the fidelity of gesture recognition among different users. Here, we systematically study the latent factors determining the performance of sEMG-interfaces in synthetic tests and in an arcade game...
April 6, 2018: Sensors
https://www.readbyqxmd.com/read/29629880/influence-of-nerve-cuff-channel-count-and-implantation-site-on-the-separability-of-afferent-eng
#18
Ana Carolina Pinto da Silveira, Emma Brunton, Sally Spendiff, Kianoush Nazarpour
Recording of neural signals from intact peripheral nerves in patients with spinal cord injury or stroke survivors offers the possibility for the development of closed-loop sensorimotor prostheses. Nerve cuffs have been found to provide stable recordings from peripheral nerves for prolonged periods of time. However, questions remain over the design and positioning of nerve cuffs such that the separability of neural data recorded from the peripheral nerves is improved.
 
 Approach. Afferent electroneurographic (ENG) signals were recorded with nerve cuffs placed on the sciatic nerve of rats in response to various mechanical stimuli to the hindpaw...
April 9, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29629586/patients-with-unilateral-transfemoral-amputation-treated-with-a-percutaneous-osseointegrated-prosthesis
#19
E Hansson, K Hagberg, M Cawson, T H Brodtkorb
Aims The aim of this study was to compare the cost-effectiveness of treatment with an osseointegrated percutaneous (OI-) prosthesis and a socket-suspended (S-) prosthesis for patients with a transfemoral amputation. Patients and Methods A Markov model was developed to estimate the medical costs and changes in quality-adjusted life-years (QALYs) attributable to treatment of unilateral transfemoral amputation over a projected period of 20 years from a healthcare perspective. Data were collected alongside a prospective clinical study of 51 patients followed for two years...
April 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29628680/rotating-hinge-prosthesis-for-complex-revision-total-knee-arthroplasty-a-review-of-the-literature
#20
REVIEW
Shalen Kouk, Parthiv A Rathod, Aditya V Maheshwari, Ajit J Deshmukh
Introduction: The rotating hinge prosthesis was originally used and designed as a primary total knee arthroplasty implant, but was hampered due to poor outcomes and catastrophic failures. Newer rotating hinge implants can be utilized in complex revision total knee arthroplasties when appropriately indicated, but their outcome data is very difficult to interpret due to the strict and varied indications for use and subsequently small number of procedures performed. The goal of this review is to evaluate the current evidence on large cohort, rotating hinge knee prostheses used in the revision setting, in order to provide a clearer understanding of the indications, outcomes and complications...
January 2018: Journal of Clinical Orthopaedics and Trauma
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