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https://www.readbyqxmd.com/read/28329364/the-effect-of-different-mitral-annuloplasty-rings-on-valve-geometry-and-annular-stress-distribution%C3%A2
#1
Søren Nielsen Skov, Diana Mathilde Røpcke, Marcell Juan Tjørnild, Christine Ilkjær, Jonas Rasmussen, Hans Nygaard, Morten Olgaard Jensen, Sten Lyager Nielsen
OBJECTIVES: To characterize the remodelling effects and deformational forces of normosized rigid, semirigid and flexible mitral annuloplasty rings after implantation in healthy pigs. METHODS: Measurements were performed in vivo with 80-kg porcine animals. Twenty-eight animals were randomized into a no ring group, a flexible ring group (Duran AnCore Ring, Medtronic, Minneapolis, MN, USA), a rigid ring group (Carpentier-Edwards Classic annuloplasty ring, Edwards Lifesciences, Irvine, CA, USA) and a semirigid ring group (Carpentier-Edwards Physio I annuloplasty ring, Edwards Lifesciences)...
February 16, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28329199/does-implantation-of-a-single-clip-provide-reliable-durability-after-transcatheter-mitral-repair-%C3%A2
#2
Nicola Buzzatti, Paolo Denti, Giovanni La Canna, Davide Schiavi, Luca Vicentini, Iside Stella Scarfò, Ilaria Caso, Michele De Bonis, Ottavio Alfieri
OBJECTIVES: A single MitraClip implant is often considered enough to achieve adequate mitral regurgitation (MR) reduction. The aim of this study was to compare MR recurrence in patients with an initial optimal result treated with a single clip versus those treated with two clips. METHODS: From October 2008 to May 2016, 322 patients were treated with the MitraClip procedure at our institution. We retrospectively selected all patients treated for functional MR (FMR) and degenerative MR (DMR) aetiologies with residual MR ≤1+, excluding patients who required >2 clips...
February 27, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28329164/large-animal-model-of-functional-tricuspid-regurgitation-in-pacing-induced-end-stage-heart-failure
#3
Marcin Malinowski, Alistair G Proudfoot, David Langholz, Lenora Eberhart, Michael Brown, Hans Schubert, Jeremy Wodarek, Tomasz A Timek
OBJECTIVES: Functional tricuspid regurgitation (FTR) is common in patients with advanced heart failure and frequently complicates left ventricular assist device implantation yet remains poorly understood. We set out to establish large animal model of FTR that could serve as a research platform to investigate the pathogenesis of FTR associated with end-stage heart failure. METHODS: : Through right thoracotomy, ten adult sheep underwent implantation of pacemaker with epicardial LV lead, five sonomicrometry crystals on the right ventricle, and left and right ventricular telemetry pressure sensors during a beating heart off-pump procedure...
February 21, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28328631/single-institution-review-of-patients-with-prior-breast-augmentation-undergoing-breast-conservation-therapy-for-breast-cancer
#4
Sangeetha Prabhakaran, Joshua B Elston, Amina Lleshi, Ambuj Kumar, Weihong Sun, Nazanin Khakpour, Deniz Dayicioglu
BACKGROUND: Increasing number of patients with preexisting breast implants desire breast conservation therapy for breast cancer. There is paucity of comparative data on tumor margins and re-excisions in these patients. High re-excision rates up to 25% have been reported in breast conservation therapy patients; efforts to obtain cosmesis and avoid implant rupture might increase this further. We analyzed tumor margins, re-excision rates, and recurrence in previously augmented versus non-augmented patients undergoing lumpectomy for breast cancer...
March 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28327697/seven-mm-long-dental-implants-in-posterior-jaws-3-year-report-of-an-ongoing-prospective-single-cohort-study
#5
Paulo Maló, Miguel de Araújo Nobre, Armando Lopes, Inês Gonçalves, Mariana Nunes
PURPOSE: To report on the outcome of 7 mm long implants in the rehabilitation of posterior areas of atrophic jaws 3 years after loading. MATERIALS AND METHODS: This prospective study included 127 patients treated with 217 implants supporting 165 fixed prostheses. Final abutments were delivered at surgery stage and in the large majority of patients (n = 116) the implants (n = 199) were loaded after 4 months. Primary outcome measures were implant success and prosthetic success calculated at patient level; secondary outcome measures were complications, and marginal bone level changes calculated at patient level...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28327695/do-repeated-changes-of-abutments-have-any-influence-on-the-stability-of-peri-implant-tissues-one-year-post-loading-results-from-a-multicentre-randomised-controlled-trial
#6
Marco Esposito, Eriberto Bressan, Maria Gabriella Grusovin, Ferdinando D'Avenia, Konrad Neumann, Luca Sbricoli, Giuseppe Luongo
PURPOSE: To evaluate the influence of at least three abutment changes in conventionally loaded implants against placement of a definitive abutment in immediately non-occlusal loaded implants on hard and soft tissue changes. MATERIALS AND METHODS: Eighty patients requiring one single crown or one fixed partial prosthesis supported by a maximum of three implants were randomised, after implants were placed with more than 35 Ncm, according to a parallel group design to receive definitive abutments which were loaded immediately (definitive abutment or immediate loading group) or transmucosal abutments...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28327692/immediate-immediate-delayed-6%C3%A2-weeks-and-delayed-4%C3%A2-months-post-extractive-single-implants-1-year-post-loading-data-from-a-randomised-controlled-trial
#7
Marco Esposito, Giovanni Zucchelli, Gioacchino Cannizzaro, Luigi Checchi, Carlo Barausse, Anna Trullenque-Eriksson, Pietro Felice
PURPOSE: To compare the clinical outcome of single implants placed immediately after tooth extraction with implants placed 6 weeks after tooth extraction (immediate-delayed placement), and with implants placed after 4-month extraction and socket healing (delayed placement). MATERIALS AND METHODS: Two-hundred and ten (210) patients requiring a single implant-supported crown to replace a tooth to be extracted were randomised to receive immediate post-extractive implants (70 patients), immediate-delayed implants at 6 weeks (70 patients), and delayed implants after 4 months of healing (70 patients) according to a parallel group design...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28327450/impact-of-attenuated-signal-plaque-observed-by-intravascular-ultrasound-on-vessel-response-after-drug-eluting-stent-implantation
#8
Hideki Kitahara, Katsuhisa Waseda, Kenji Sakamoto, Ryotaro Yamada, Ching-Chang Huang, Daisaku Nakatani, Kenji Sakata, Osami Kawarada, Paul G Yock, Yutaka Matsuyama, Hiroyoshi Yokoi, Masato Nakamura, Toshiya Muramatsu, Shinsuke Nanto, Peter J Fitzgerald, Yasuhiro Honda
BACKGROUND AND AIMS: The aim of this study was to investigate the impact of attenuated-signal plaque (ASP) observed by intravascular ultrasound (IVUS) on vessel response after drug-eluting stent implantation. METHODS: Data were derived from the IVUS cohort of the J-DESsERT trial comparing paclitaxel- and sirolimus-eluting stents. Serial IVUS analysis (pre- and post-intervention, and 8-month follow-up) was performed in 136 non-AMI lesions. ASP was defined as hypoechoic plaque with ultrasound attenuation without calcification...
February 20, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28326723/-current-dental-implant-design-and-its-clinical-importance
#9
Lin Ye
The development of clinical implant dentistry was intensively affected by dental implant design improvement and innovation, which brought about new concept, even milestone-like changes of clinical protocol. The current improvements of dental implant design and their clinical importance could be highlighted as followings: 1) The implant apical design influences the implant preliminary stability in immediate implant. The apical 3-5 mm design of implant makes implant stable in immediate implant, because this part would be screwed into alveolar bone through fresh socket, the other part of implant could not be tightly screwed in the socket because of smaller implant diameter...
February 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28326710/-finite-elemental-analysis-of-the-influence-of-mandibular-plane-angle-on-the-stress-distribution-of-implant-tooth
#10
Xing Weibin, Zheng Shuxian, Yang Shiyi
OBJECTIVE: Finite elemental analysis of the mechanical characteristics of a first mandibular implant molar under different mandibular plane angles determines the load conditions on the implant, thereby providing guidance for clinical application. METHODS: CT data of three mandibular plane angles (low, average, high) were collected. A finite elemental combination model of a dental implant was constructed. The orthogonal experimental research was designed. Results followed data collection and analysis...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28321991/atomic-layer-deposition-of-a-silver-nanolayer-on-advanced-titanium-orthopedic-implants-inhibits-bacterial-colonization-and-supports-vascularized-de-novo-bone-ingrowth
#11
Aine Devlin-Mullin, Naomi M Todd, Zahra Golrokhi, Hua Geng, Moritz A Konerding, Nigel G Ternan, John A Hunt, Richard J Potter, Chris Sutcliffe, Eric Jones, Peter D Lee, Christopher A Mitchell
Joint replacement surgery is associated with significant morbidity and mortality following infection with either methicillin-resistant Staphylococcus aureus (MRSA) or Staphylococcus epidermidis. These organisms have strong biofilm-forming capability in deep wounds and on prosthetic surfaces, with 10(3) -10(4) microbes resulting in clinically significant infections. To inhibit biofilm formation, we developed 3D titanium structures using selective laser melting and then coated them with a silver nanolayer using atomic layer deposition...
March 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28321003/midterm-outcomes-with-a-self-expandable-transcatheter-heart-valve-in-japanese-patients-with-symptomatic-severe-aortic-stenosis
#12
Yoshiki Sawa, Kei Torikai, Junjiro Kobayashi, Hiroshi Niinami, Toru Kuratani, Koichi Maeda, Hideaki Kanzaki, Nobuyuki Komiyama, Yutaka Tanaka, Angie Zhang, Shigeru Saito
BACKGROUND: Transcatheter aortic valve implantation (TAVI) is a viable alternative to surgical aortic valve replacement in high-risk or inoperable patients with aortic stenosis (AS). Here we report the midterm outcomes of high-risk Japanese patients with severe AS who underwent TAVI with a self-expandable TAV.Methods and Results:The CoreValve Japan Trial was a prospective, multicenter trial of the CoreValve System. A group of 55 patients (mean age 82.5±5.5 years, 30.9% male, 100% NYHA class III/IV, STS 8...
March 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28319212/treatment-outcomes-for-mandibular-mini-implant-retained-overdentures-a-systematic-review
#13
Jin-Hong Park, Jeong-Yol Lee, Sang-Wan Shin
PURPOSE: This systematic review evaluated treatment outcomes for mandibular mini-implant-retained overdentures (MMIOs) in terms of (1) implant survival rate, (2) peri-implant marginal bone loss, (3) prosthodontic maintenance and complication occurrence, and (4) patient satisfaction. MATERIALS AND METHODS: Pertinent literature published in English before October 12, 2015 was identified using a MEDLINE and EMBASE search strategy and hand searching of relevant journals...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28319208/posterior-mandibular-ridge-resorption-associated-with-different-retentive-systems-for-overdentures-a-7-year-retrospective-preliminary-study
#14
Moustafa Abdou Elsyad, Shahinaz Sayed Mohamed, Ahmad Fathalla Shawky
PURPOSE: This retrospective study compared posterior mandibular residual ridge resorption with two different retentive mechanisms for overdentures after 7 years. MATERIALS AND METHODS: A convenience sample of 18 edentulous men was assigned to one of two equal groups. Two implants were placed in the mandibular canine areas for each patient using the conventional two-stage surgical protocol, and the implants were splinted with a round bar 3 months later. New mandibular overdentures were then connected to the bars with clips (clip-retained overdentures, CR group) or resilient liners (resilient liner-retained overdentures, RR group)...
March 20, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28318375/fracture-strength-of-standard-and-small-diameter-prosthetic-abutments-for-full-arch-implant-supported-restorations
#15
Bruno Costa Martins de Sá, Augusto Ricardo Andrighetto, Sérgio Rocha Bernardes, Rodrigo Tiossi
The fracture strength of prosthetic abutments with different sizes and combinations to support a 5 implant milled framework with distal extension was tested. Prosthetic abutments with different dimensions (4.8 mm diameter mini-conical abutment and 3.5 mm diameter micro-conical abutment) were screwed to 5 threaded implants. The following groups were divided (n=3): G1 with 5 mini-conical abutments (standard size), G2 with 5 micro-conical abutments (small sized), G3 with a combination of 3 small sized abutments and 2 standard sized abutments, and G4 with a combination of 2 small sized abutments and 3 standard sized abutments...
March 20, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28318137/plaque-erosion-delays-vascular-healing-after-drug-eluting-stent-implantation-in-patients-with-acute-coronary-syndrome-an-in-vivo-optical-coherence-tomography-study
#16
Sining Hu, Chao Wang, Chunyang Zhe, Yinchun Zhu, Taishi Yonetsu, Haibo Jia, Jingbo Hou, Shaosong Zhang, Ik-Kyung Jang, Bo Yu
OBJECTIVES: To compare vascular healing after drug-eluting stent (DES) implantation between plaque rupture (PR) and plaque erosion (PE). BACKGROUND: Vascular response after stent implantation in patients with PR has been extensively studied. Little is known about vascular healing after stent implantation in PE. METHODS: Sixty-five ACS patients who received optical coherence tomography (OCT) imaging of the culprit lesions both before and after stent implantation at baseline as well as at 6 months were included in this study...
March 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28301310/glass-fiber-based-mr-safe-guidewire-for-mr-imaging-guided-endovascular-interventions-in-vitro-and-preclinical-in-vivo-feasibility-study
#17
Alexander Massmann, Arno Buecker, Guenther K Schneider
Purpose To evaluate glass-fiber-based guidewires that are safe for magnetic resonance (MR) imaging-guided endovascular interventions by using a phantom and an in vivo swine model. Materials and Methods MR imaging-safe guidewires were made from micropultruded glass and/or aramid fibers and epoxy resin with diameters of 0.89 mm (0.035 inch) for standard and stiff guidewires and 0.36 mm (0.014 inch) for micro guidewires. MR imaging visibility and mechanical properties were assessed in a pulsatile flow model. After approval was obtained from the institutional animal care and use committee, MR imaging guidewires were evaluated for standard endovascular procedures in nine pigs...
March 14, 2017: Radiology
https://www.readbyqxmd.com/read/28298833/minimally-invasive-maxillary-sinus-elevation-using-balloon-system-a-case-series
#18
Radha Bharathi Dhandapani, Shivakumar Baskaran, Kurumathur Vasudevan Arun, Thirunelveli Saravanan Subbu Kumar
The posterior maxillary segment frequently exhibits insufficient bone mass to support dental implants. Sinus floor augmentation enables implant placement in the posterior maxilla. This case series included ten sites, in which sinus floor elevation was done using sinus lift balloon system followed by augmentation utilizing irradiated cancellous bone allograft. Postoperative radiographic assessment of vertical bone gain was done at 3 and 6 months follow-up period. The mean initial and final bone height were 6...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28298826/alveolar-ridge-preservation-using-autogenous-tooth-graft-versus-beta-tricalcium-phosphate-alloplast-a-randomized-controlled-prospective-clinical-pilot-study
#19
Chaitanya Pradeep Joshi, Nitin Hemchandra Dani, Smita Uday Khedkar
BACKGROUND: A randomized, prospective clinical, radiographical, and histological study was conducted to evaluate healing after alveolar ridge preservation technique using two different graft materials, namely, a novel autogenous graft material i. e., autogenous tooth graft (ATG) and beta-tricalcium phosphate (β-TCP) alloplast. MATERIALS AND METHODS: Fifteen patients undergoing extraction of at least three teeth were selected. Atraumatic extractions were performed...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28296984/implant-stability-and-bone-characteristics-in-free-fibula-flaps-used-for-jaw-reconstruction-a-prospective-cohort-study
#20
Vinay V Kumar, Ullash Kumar, Vijay Pillai, Vinotha Ponnusamy, Bilal Al-Nawas, Moni A Kuriakose
PURPOSE: The primary objective of this prospective cohort study was to evaluate primary and secondary implant stability values of implants placed into healed free fibula-reconstructed mandibles. The secondary objective was to investigate whether a correlation existed between primary implant stability and the quantity of cortical bone-implant contact and of cortical fibular bone in contact with the implants. MATERIALS AND METHODS: The study participants are patients enrolled in a registered trial (No...
March 17, 2017: International Journal of Oral & Maxillofacial Implants
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