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https://www.readbyqxmd.com/read/28212978/a-systematic-review-of-the-survival-and-complication-rates-of-inlay-retained-fixed-dental-prostheses
#1
REVIEW
Junyu Chen, He Cai, Lai Suo, Yiyuan Xue, Jian Wang, Qianbing Wan
OBJECTIVES: The aim of this systematic review was to investigate the survival and complication rates of inlay-retainer fixed dental prostheses (IRFDPs). DATA/SOURCES: A systematic search was conducted in the PubMed, EMBASE, and Cochrane Library databases in English and time filters (articles published from 1960) were used. STUDY SELECTION: Randomized controlled trails (RCTs), controlled clinical trials (CCTs) and prospective cohort studies on IRFDPs with a mean follow-up period of at least 2 years were included...
February 14, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28212099/high-density-high-radiance-%C3%AE-led-matrix-for-optogenetic-retinal-prostheses-and-planar-neural-stimulation
#2
Ahmed Soltan, Brian McGovern, Emmanuel Drakakis, Mark Neil, Pleun Maaskant, Mahbub Akhter, Jun Su Lee, Patrick Degenaar
Optical neuron stimulation arrays are important for both in-vitro biology and retinal prosthetic biomedical applications. Hence, in this work, we present an 8100 pixel high radiance photonic stimulator. The chip module vertically combines custom made gallium nitride μLEDs with a CMOS application specific integrated circuit. This is designed with active pixels to ensure random access and to allow continuous illumination of all required pixels. The μLEDs have been assembled on the chip using a solder ball flip-chip bonding technique which has allowed for reliable and repeatable manufacture...
February 13, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28211795/a-murine-model-of-a-novel-surgical-architecture-for-proprioceptive-muscle-feedback-and-its-potential-application-to-control-of-advanced-limb-prostheses
#3
Tyler R Clites, Matthew Carty, Shriya Srinivasan, Anthony Zorzos, Hugh Herr
<i>Objective:</i> Proprioceptive mechanisms play a critical role in both reflexive and volitional lower extremity control. Significant strides have been made in the development of bionic limbs that are capable of bi-directional communication with the peripheral nervous system, but none of these systems have been capable of providing physiologically-relevant muscle-based proprioceptive feedback through natural neural pathways. In this study, we present the Agonist-antagonist Myoplastic Interface (AMI), a surgical approach with the capacity to provide graded kinesthetic feedback from a prosthesis through mechanical activation of native mechanoreceptors within residual agonist-antagonist muscle pairs...
February 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28211301/early-results-of-patellofemoral-inlay-resurfacing-arthroplasty-using-the-hemicap-wave-prosthesis
#4
Akash Patel, Zakir Haider, Amarjit Anand, Dominic Spicer
BACKGROUND: Common surgical treatment options for isolated patellofemoral osteoarthritis include arthroscopic procedures, total knee replacement and patellofemoral replacement. The HemiCap Wave patellofemoral resurfacing prosthesis is a novel inlay design introduced in 2009 with scarce published data on its functional outcomes. We aim to prospectively evaluate early functional outcomes and complications, for patients undergoing a novel inlay resurfacing arthroplasty for isolated patellofemoral arthrosis in an independent centre...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28211101/dental-status-as-a-predictor-of-mortality-among-nursing-facility-residents-in-eastern-iowa
#5
Daniel J Caplan, Tariq S Ghazal, Howard J Cowen, Deise C Oliveira
OBJECTIVE: This study aimed to evaluate dental status (ie, number of teeth and presence of removable dental prostheses) as a predictor of all-cause mortality among nursing facility residents. BACKGROUND: Edentulism has been associated with poorer health outcomes in geriatric populations. MATERIALS AND METHODS: Between March 2006 and June 2008, oral health screening examinations were completed for 584 residents of 10 nursing facilities in four eastern Iowa counties...
February 16, 2017: Gerodontology
https://www.readbyqxmd.com/read/28209965/high-amplitude-electrical-stimulation-can-reduce-elicited-neuronal-activity-in-visual-prosthesis
#6
Alejandro Barriga-Rivera, Tianruo Guo, Chih-Yu Yang, Amr Al Abed, Socrates Dokos, Nigel H Lovell, John W Morley, Gregg J Suaning
Retinal electrostimulation is promising a successful therapy to restore functional vision. However, a narrow stimulating current range exists between retinal neuron excitation and inhibition which may lead to misperformance of visual prostheses. As the conveyance of representation of complex visual scenes may require neighbouring electrodes to be activated simultaneously, electric field summation may contribute to reach this inhibitory threshold. This study used three approaches to assess the implications of relatively high stimulating conditions in visual prostheses: (1) in vivo, using a suprachoroidal prosthesis implanted in a feline model, (2) in vitro through electrostimulation of murine retinal preparations, and (3) in silico by computing the response of a population of retinal ganglion cells...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28208056/oral-rehabilitation-of-a-patient-with-ectodermal-dysplasia-treated-with-fresh-frozen-bone-allografts-and-computer-guided-implant-placement-a-clinical-case-report
#7
Carlo Maiorana, Pier Paolo Poli, Carlo Poggio, Paola Barbieri, Mario Beretta
Ectodermal dysplasia (ED) is an inherited disorder characterized by abnormality of ectodermally derived structures. A recurrent oral finding is oligodontia, which in turn leads to a severely hypotrophic alveolar process with typical knife-edge morphology and adverse ridge contours. This unfavorable anatomy can seriously hamper proper implant placement. Fresh-frozen bone (FFB) allografts recently have been proposed to augment the residual bone volume for implant placement purposes; however, scientific evidence concerning the use of FFB to treat ED patients is absent...
January 20, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28207597/implant-anchorage-in-the-nasopalatine-canal-for-the-rehabilitation-of-severely-atrophic-maxilla
#8
Pâmela Leticia Dos Santos, Gustavo Henrique Souza Silva, Raquel Damazia da Silva, Fernanda Rayssa Da Silva Pereira, Jéssica Lemos Gulinelli
PURPOSE: This study aimed to describe the clinical case of implant placement in the nasopalatine canal as an aid for atrophic maxilla rehabilitation. CASE REPORT: The surgical procedure was carried out in 2 stages, the first part consisted of a surgery to lift the maxillary sinus membrane associated with the xenogeneic bone placement and the second part consisted of the surgery for the implants placement, both under local anesthesia. A number of seven osseointegrated implants were placed in the maxilla, one was anchored in the nasopalatine canal region after having its neurovascular content emptied by means of the use of drill threads of the implant system...
February 14, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28204938/total-nasal-reconstruction-for-extruded-pending-extrusion-and-severely-displaced-silicone-nasal-implants-in-asian-patients
#9
Darryl J Hodgkinson
The Australian population is 10% of Asian origin, and many of our Asian patients have had nasal augmentation using prosthetic material prior to immigration or as medical tourists back in their country of origin. Insertion of nasal prostheses is the most common way to augment the nasal dorsum in the Asian patient and although there is a trend towards autogenous primary augmentation still, the vast majority of patients seen in clinical practice have had augmentation by the insertion of foreign material generally silicone...
February 15, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28203403/clinic-application-of-tissue-engineered-bronchus-for-lung-cancer-treatment
#10
Qiang Tan, Ruijun Liu, Xiaoke Chen, Jingxiang Wu, Yinggen Pan, Shun Lu, Walter Weder, Qingquan Luo
BACKGROUND: Delayed revascularization process and substitute infection remain to be key challenges in tissue engineered (TE) airway reconstruction. We propose an "in-vivo bioreactor" design, defined as an implanted TE substitutes perfused with an intra-scaffold medium flow created by an extracorporeal portable pump system for in situ organ regeneration. The perfusate keeps pre-seeded cells alive before revascularization. Meanwhile the antibiotic inside the perfusate controls topical infection...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28203188/endoscope-assisted-and-controlled-argus-ii-epiretinal-prosthesis-implantation-in-late-stage-retinitis-pigmentosa-a-report-of-2-cases
#11
Emin Özmert, Sibel Demirel
Several different approaches for restoring sight in subjects who are blind due to outer retinal degeneration are currently under investigation, including stem cell therapy, gene therapy, and visual prostheses. Although many different types of visual prostheses have shown promise, to date, the Argus II Epiretinal Prosthesis System, developed in a clinical setting over the course of 10 years, is the world's first and only retinal prosthesis that has been approved by the United States Food and Drug Administration (FDA) and has been given the CE-Mark for sale within the European Economic Area (EEA)...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28203007/-diagnossis-and-treatment-of-complicated-anterior-teeth-esthetic-defects-by-combination-of-whole-process-digital-esthetic-rehabilitation-with-periodontic-surgery
#12
Z Li, Y S Liu, H Q Ye, Y S Liu, W J Hu, Y S Zhou
OBJECTIVE: To explore a new method of whole-process digital esthetic prosthodontic rehabilitation combined with periodontic surgery for complicated anterior teeth esthetic defects accompanied by soft tissue morphology, to provide an alternative choice for solving this problem under the guidance of three-dimensional (3D) printing digital dental model and surgical guide, thus completing periodontic surgery and digital esthetic rehabilitation of anterior teeth. METHODS: In this study, 12 patients with complicated esthetic problems accompanied by soft tissue morphology in their anterior teeth were included...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28199936/the-longitudinal-split-technique-for-narrow-canal-tibia-in-a-case-of-distal-femur-replacement-for-osteosarcoma
#13
Toru Akiyama, Shotaro Kanda, Kazuo Saita
INTRODUCTION: There are currently no available prostheses that can be used for extremely small femurs or tibias of adult patients in countries where allograft is unavailable. CASE REPORT: We report the case of a 17-year-old girl requiring special limb salvage technique for distal femur reconstruction following resection of malignant tumor. This technique was needed because of a very narrow canal of the tibia. We split bilateral tibial cortices longitudinally with osteotomies to enlarge tibial canal enough to insert conventional endoprosthesis...
January 31, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28198781/biomechanical-analysis-of-two-level-cervical-disc-replacement-with-a-stand-alone-u-shaped-disc-implant
#14
Yang Li, Guy R Fogel, Zhenhua Liao, Rajnesh Tyagi, Gaolong Zhang, Weiqiang Liu
STUDY DESIGN: Biomechanical study using a three-dimensional nonlinear finite element (FE) model. OBJECTIVE: To analyze biomechanical changes with three prostheses based on two-level arthroplasty and to verify the biomechanical efficiency of dynamic cervical implants (DCIs) with a stand-alone U-shaped structure. SUMMARY OF BACKGROUND DATA: Few studies have compared biomechanical behavior of various prostheses as they relate to clinical results after two-level total disc replacement (TDR)...
February 14, 2017: Spine
https://www.readbyqxmd.com/read/28196278/carbon-fiber-vs-metal-framework-in-full-arch-immediate-loading-rehabilitations-of-the-maxilla-a-cohort-clinical-study
#15
Francesco Pera, Paolo Pesce, Francesco Solimano, Tiziano Tealdo, Paolo Pera, Maria Menini
BACKGROUND: Frameworks made of carbon fiber reinforced composites (CFRC) seem to be a viable alternative to traditional metal frameworks in implant prosthodontics. CFRC provide stiffness, rigidity and optimal biocompatibility. OBJECTIVE: The aim of the present prospective study was to compare carbon fiber frameworks versus metal frameworks used to rigidly splint implants in full-arch immediate loading rehabilitations. METHODS: 42 patients (test group) were rehabilitated with full-arch immediate loading rehabilitations of the upper jaw (total: 170 implants) following the Columbus Bridge Protocol with 4 to 6 implants with distal tilted implants...
February 14, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28196044/is-oxinium-losing-its-luster-commentary-on-an-article-by-christopher-j-vertullo-mbbs-fracs-orth-faortha-et-al-twelve-year-outcomes-of-an-oxinium-total-knee-replacement-compared-with-the-same-cobalt-chromium-design-an-analysis-of-17-577-prostheses-from-the-australian
#16
https://www.readbyqxmd.com/read/28196036/a-prospective-study-of-four-total-ankle-arthroplasty-implants-by-non-designer-investigators
#17
Tina Lefrancois, Alastair Younger, Kevin Wing, Murray J Penner, Peter Dryden, Hubert Wong, Timothy Daniels, Mark Glazebrook
BACKGROUND: There are several types of prostheses available to surgeons when performing a total ankle arthroplasty (TAA). The main objective of this study was to summarize the clinical and functional outcomes of 4 TAA prostheses: the Hintegra implant (Integra LifeSciences), the Agility implant (DePuy), the Mobility implant (DePuy), and the Scandinavian Total Ankle Replacement (STAR) implant (Small Bone Innovations [SBi]). METHODS: Patients were prospectively recruited...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28196034/long-term-results-after-total-knee-arthroplasty-with-contemporary-rotating-hinge-prostheses
#18
Umberto Cottino, Matthew P Abdel, Kevin I Perry, Kristin C Mara, David G Lewallen, Arlen D Hanssen
BACKGROUND: Total knee arthroplasty (TKA) with a rotating-hinge prosthesis is considered a salvage procedure. While excellent immediate stability is achieved, the historically high failure rate has tempered its use. The goal of this study was to determine clinical outcomes, radiographic results, and survivorship after TKA with contemporary rotating-hinge components. METHODS: We identified 408 consecutive TKAs performed with rotating-hinge components for nononcologic indications from 2002 to 2012 at a single academic institution...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28196029/twelve-year-outcomes-of-an-oxinium-total-knee-replacement-compared-with-the-same-cobalt-chromium-design-an-analysis-of-17-577-prostheses-from-the-australian-orthopaedic-association-national-joint-replacement-registry
#19
Christopher J Vertullo, Peter L Lewis, Stephen Graves, Lan Kelly, Michelle Lorimer, Peter Myers
BACKGROUND: Oxidized zirconium (Oxinium) was introduced as an alternative bearing surface to cobalt-chromium (CoCr) in an attempt to reduce polyethylene wear and decrease aseptic mechanical failure of total knee replacements. While noncomparative reports have been described as promising, we were aware of no short or long-term clinical studies showing the superiority of Oxinium on polyethylene as a bearing surface. Using data from a comprehensive national joint replacement registry, we compared the long-term outcomes after cruciate-retaining total knee arthroplasty (TKA) with an Oxinium femoral component and those with the same prosthetic design but with a CoCr femoral component...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28195984/reconstruction-following-tumor-resections-in-skeletally-immature-patients
#20
Adam S Levin, Alexandre Arkader, Carol D Morris
Reconstruction options in children after bone tumor resection are as varied as they are challenging. Advances in biologic and endoprosthetic design have led to many choices, all of which must be considered in the context of prognosis, treatment limitations, and patient/family expectations. The current experience and results of limb-sparing surgery following bone sarcoma resection in growing children are discussed, including allograft, autograft, and metallic prostheses alone and in combination, especially as they pertain to the knee...
March 2017: Journal of the American Academy of Orthopaedic Surgeons
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