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post extraction implant

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https://www.readbyqxmd.com/read/28807525/experimental-and-computational-analysis-of-micromotions-of-an-uncemented-femoral-knee-implant-using-elastic-and-plastic-bone-material-models
#1
Sanaz Berahmani, Dennis Janssen, Nico Verdonschot
It is essential to calculate micromotions at the bone-implant interface of an uncemented femoral total knee replacement (TKR) using a reliable computational model. In the current study, experimental measurements of micromotions were compared with predicted micromotions by Finite Element Analysis (FEA) using two bone material models: linear elastic and post-yield material behavior, while an actual range of interference fit was simulated. The primary aim was to investigate whether a plasticity model is essential in order to calculate realistic micromotions...
July 29, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28799565/modified-technique-of-endocapsular-lens-aspiration-for-severely-subluxated-lenses
#2
S Khokhar, N Aron, N Yadav, G Pillay, E Agarwal
PurposeSeverely subluxated crystalline lenses pose a difficult situation to anterior segment surgeons and can only be managed surgically by removal of the lens as well as the capsular bag. Several techniques have been described in literature for the management of such cases. We describe a modified technique of endocapsular lens aspiration by the limbal route for lens extraction through small incisions on the cornea.Patients and methodsThirty-two eyes of 16 consecutive patients with severely subluxated crystalline lenses were recruited in the study...
August 11, 2017: Eye
https://www.readbyqxmd.com/read/28760213/retained-cardiac-implantable-electronic-device-fragments-are-not-associated-with-magnetic-resonance-imaging-safety-issues-morbidity-or-mortality-after-orthotopic-heart-transplant
#3
Christopher O Austin, Kevin Landolfo, Pragnesh P Parikh, Parag C Patel, K L Venkatachalam, Fred M Kusumoto
BACKGROUND: Cardiac implantable electronic device therapy (CIED) has revolutionized treatment for advanced heart failure. Most patients considered for orthotopic heart transplantation (OHT) are treated with implantable cardioverter defibrillators, cardiac resynchronization therapy, or both. These CIEDs are surgically extracted at the time of transplant. Occasionally, CIEDs are incompletely removed. Little is known about the outcomes of post-OHT patients with retained CIED fragments. METHODS: We identified 200 consecutive patients that underwent OHT at our institution between April 2006 and December 2014 and performed a retrospective analysis of available radiographic images and clinical records...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28744958/post-extraction-implant-placement-into-infected-versus-non-infected-sites-a-multicenter-retrospective-clinical-study
#4
Francesco Zuffetti, Matteo Capelli, Fabio Galli, Massimo Del Fabbro, Tiziano Testori
PURPOSE: The aim of this study was to assess whether immediate implant placement into post-extraction sites presenting a chronic infection poses a greater risk of implant failure than immediate placement in non-infected sites. MATERIALS AND METHODS: Records of patients who underwent extraction and immediate implant placement into both infected and non-infected sites from January 1998 to September 2014 at 5 different dental centers were considered for inclusion. Included records were subjected to statistical analysis of survival rates, along with a number of other patient-, implant-, surgery-, and prosthesis-related variables...
July 26, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28728260/-clinical-analysis-of-pacing-therapy-and-treatment-of-complications-during-follow-up-in-children
#5
P J Zhao, Y W Chen, F Li, Y Li, J P Yang, J J Wu
Objective: To analyze characteristics of permanent pacemaker implantation in children as well as treatment and prognosis of complications. Method: Clinical data of children who underwent endocardial or epicardial permanent pacemaker implantation between April 2000 and June 2016 in Shanghai Xinhua Hospital and Shanghai Children's Medical Center were analyzed retrospectively. These patients were discharged 5 days after implantation. Electrocardiogram, chest X ray, echocardiography and pacemaker programming were performed during follow-up...
July 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28727672/cardiac-rehabilitation-in-patients-with-left-ventricular-assist-device-a-systematic-review-and-meta-analysis
#6
Toufik Mahfood Haddad, Alok Saurav, Aiman Smer, Muhammad S Azzouz, Abhilash Akinapelli, Mark A Williams, Venkata M Alla
PURPOSE: Exercise-based cardiac rehabilitation (EBCR) has been demonstrated to improve functional capacity in heart failure (HF). However, there are limited data on the effect of EBCR in patients with advanced HF and left ventricular assist devices (LVADs). This meta-analysis sought to evaluate the effects of EBCR on functional capacity in patients with LVAD. METHODS: PubMed, Web of Science, CINAHL, and Cochrane Library databases were searched for randomized studies assessing the impact of EBCR in patients following LVAD implantation compared with standard therapy (ST)...
July 19, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28713017/intracellular-co-delivery-of-sr-ion-and-phenamil-drug-through-mesoporous-bioglass-nanocarriers-synergizes-bmp-signaling-and-tissue-mineralization
#7
Jung-Hwan Lee, Nandin Mandakhbayar, Ahmed El-Fiqi, Haw-Won Kim
Inducing differentiation and maturation of resident multipotent stem cells (MSCs) is an important strategy to regenerate hard tissues in mal-calcification conditions. Here we explore a co-delivery approach of therapeutic molecules comprised of ion and drug through a mesoporous bioglass nanoparticle (MBN) for this purpose. Recently, MBN has offered unique potential as a nanocarrier for hard tissues, in terms of high mesoporosity, bone bioactivity (and possibly degradability), tunable delivery of biomolecules, and ionic modification...
July 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28709673/stereophotogrammetric-impression-making-for-polyoxymethylene-milled-immediate-partial-fixed-dental-prostheses
#8
Miguel Gómez-Polo, Cristina Gómez-Polo, Jaime Del Río, Rocío Ortega
Immediate post-extraction and same-day placement of interim prostheses have increased patient acceptance of implant-supported prostheses. However, for immediate prostheses supported by multiple implants, meeting passive fit and esthetic standards is often challenging. In this clinical report, implant photogrammetry was combined with conventionally obtained digitized casts to prepare an interim, milled prosthesis from a polyoxymethylene (POM) disk, using computer-aided design and computer-aided manufacturing techniques...
July 11, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28691480/computer-guided-implant-insertion-in-a-patient-with-impacted-maxillary-canines-case-report
#9
S Lico, C Andrisani, M Andreasi Bassi, V Candotto, F J Silvestre, D Lauritano
The use of minimally invasive surgical techniques undoubtedly represents a huge advantage for both the clinician and the patient. This case report shows the possibility of making an implant-prosthetic rehabilitation in an upper jaw in a patient who presented dental elements 1.3 and 2.3 in bone inclusion. The use of computer-guided surgery offers us the possibility to carry out this type of implant rehabilitation without performing the extraction of the above-mentioned dental elements combined with the bone regeneration of the extraction sockets...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28684441/structural-valve-deterioration-after-transcatheter-aortic-valve-implantation
#10
Farid Foroutan, Gordon H Guyatt, Catherine M Otto, Reed A Siemieniuk, Stefan Schandelmaier, Thomas Agoritsas, Per O Vandvik, Sai Bhagra, Rodrigo Bagur
BACKGROUND: Transcatheter aortic valve implantation (TAVI), widely used to treat high-risk patients with severe symptomatic aortic stenosis, has recently been extended to younger patients at lower operative risk in whom long-term durability of TAVI devices is an important concern. Therefore, we conducted a systematic review and meta-analysis of observational studies addressing the frequency of structural valve deterioration (SVD) after TAVI. METHODS: We searched Medline, Embase, Cochrane Database of Systematic Reviews, and Cochrane CENTRAL from 2002 to September 2016...
July 6, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28668263/meta-analysis-of-predictors-of-early-severe-bleeding-in-patients-who-underwent-transcatheter-aortic-valve-implantation
#11
Yinghao Sun, Xianbao Liu, Zexin Chen, Jiaqi Fan, Jubo Jiang, Yuxin He, Qifeng Zhu, Po Hu, Lihan Wang, Qiyuan Xu, Xiaoping Lin, Jian'an Wang
Severe bleeding (SB) in patients who underwent transcatheter aortic valve implantation (TAVI) could be fatal. Although multiple independent predictors of bleeding post-TAVI have been identified, the definitions of bleeding and predictors vary across studies. This study aimed to provide summary effect estimates for predictors of SB within 30 days post-TAVI. A systematic review of studies that reported the incidence of bleeding post-TAVI with raw data for predictors of interest was performed. Data on characteristics of study, patient, and procedure were extracted...
August 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28666883/a-macroporous-heparin-releasing-silk-fibroin-scaffold-improves-islet-transplantation-outcome-by-promoting-islet-revascularisation-and-survival
#12
Duo Mao, Meifeng Zhu, Xiuyuan Zhang, Rong Ma, Xiaoqing Yang, Tingyu Ke, Lianyong Wang, Zongjin Li, Deling Kong, Chen Li
Islet transplantation is considered the most promising therapeutic option with the potential to cure diabetes. However, efficacy of current clinical islet transplantation is limited by long-term graft dysfunction and attrition. We have investigated the therapeutic potential of a silk fibroin macroporous (SF) scaffold for syngeneic islet transplantation in diabetic mice. The SF scaffold was prepared via lyophilisation, which enables incorporation of active compounds including cytokines, peptide and growth factors without compromising their biological activity...
September 1, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28643222/ridge-preservation-using-an-in-situ-hardening-biphasic-calcium-phosphate-%C3%AE-tcp-ha-bone-graft-substitute-a-clinical-radiological-and-histological-study
#13
Ashish Kakar, Bappanadu H Sripathi Rao, Shashikanth Hegde, Nikhil Deshpande, Annette Lindner, Heiner Nagursky, Aditya Patney, Harsh Mahajan
BACKGROUND: Post-Extraction ridge preservation using bone graft substitutes is a conservative technique to maintain the width of the alveolar ridge. The objective of the present study was to evaluate an in situ hardening biphasic (HA/β-TCP) bone graft substitutes for ridge preservation without primary wound closure or a dental membrane. METHODS: A total of 15 patients reported for tooth extraction were enrolled in this study. Implants were placed in average 5.2 ± 2 months after socket grafting...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28603001/low-lateral-thoracic-site-for-cardiac-implantable-electronic-device-implantation-a-viable-alternative-in-patients-with-limited-access-options-after-infected-device-extraction
#14
Jackson J Liang, Robert D Schaller, Danesh S Modi, Andres Enriquez, Gregory E Supple, Joshua M Cooper
BACKGROUND: Device reimplantation after extraction because of cardiac implantable electronic device (CIED) infection in pacemaker-dependent patients can be challenging in individuals with limited access options. OBJECTIVE: The purpose of this study was to describe a straightforward, low lateral thoracic implantation technique for patients with a patent axillary vein but unavailable bilateral pectoral sites. METHODS: Nine pacemaker-dependent patients (mean age 70 ± 13 years, 7 male) who underwent CIED extraction and low lateral thoracic reimplantation in whom bilateral pectoral sites were unavailable were included in the study...
June 8, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28577053/regenerative-properties-of-collagenated-porcine-bone-grafts-in-human-maxilla-demonstrative-study-of-the-kinetics-by-synchrotron-radiation-microtomography-and-light-microscopy
#15
Alessandra Giuliani, Giovanna Iezzi, Serena Mazzoni, Adriano Piattelli, Vittoria Perrotti, Antonio Barone
OBJECTIVES: Recently, it has been reported that heterologous biomaterials, where the collagen matrix is preserved, seem to facilitate blood clotting and the subsequent invasion of repairing and regenerative cells. This study aimed at evaluating the healing of human extraction sockets grafted with a collagenated cortico-cancellous porcine bone (mp3®, OsteoBiol®, Tecnoss®, Giaveno, Italy) by synchrotron radiation X-ray microtomography (microCT) and histology in order to have a 3D quantitative characterization over time...
June 2, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28555207/molar-replacement-with-7-mm-wide-diameter-implants-to-place-the-implant-immediately-or-to-wait-4-months-after-socket-preservation-%C3%A2-1-year-after-loading-results-from-a-randomised-controlled-trial
#16
Marco Tallarico, Erta Xhanari, Milena Pisano, Fulvio Gatti, Silvio Mario Meloni
PURPOSE: To test the hypothesis that there is no difference in clinical, radiographic and aesthetic outcomes positioning single post-extractive 7 mm-diameter implants or waiting 4 months after molar extraction and socket preservation procedure. MATERIAL AND METHODS: Patients requiring one implant-supported single restoration to replace a failing tooth in the molar region of both maxilla and mandible were selected. Patients were randomised according to a parallel group design into two arms: implant installation in fresh extraction sockets grafted with cortico-cancellous heterologous bone and porcine derma (group A) or delayed implant installation 4 months after tooth extraction and socket preservation using the same materials (group B)...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28551729/use-of-platelet-rich-fibrin-in-regenerative-dentistry-a-systematic-review
#17
REVIEW
Richard J Miron, Giovanni Zucchelli, Michael A Pikos, Maurice Salama, Samuel Lee, Vincent Guillemette, Masako Fujioka-Kobayashi, Mark Bishara, Yufeng Zhang, Hom-Lay Wang, Fatiha Chandad, Cleopatra Nacopoulos, Alain Simonpieri, Alexandre Amir Aalam, Pietro Felice, Gilberto Sammartino, Shahram Ghanaati, Maria A Hernandez, Joseph Choukroun
OBJECTIVES: Research across many fields of medicine now points towards the clinical advantages of combining regenerative procedures with platelet-rich fibrin (PRF). This systematic review aimed to gather the extensive number of articles published to date on PRF in the dental field to better understand the clinical procedures where PRF may be utilized to enhance tissue/bone formation. MATERIALS AND METHODS: Manuscripts were searched systematically until May 2016 and separated into the following categories: intrabony and furcation defect regeneration, extraction socket management, sinus lifting procedures, gingival recession treatment, and guided bone regeneration (GBR) including horizontal/vertical bone augmentation procedures...
July 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28528368/preparation-of-allogeneic-bone-for-alveolar-ridge-augmentation
#18
Kornel Krasny, Artur Kamiński, Marta Krasny, Tomasz Czech, Andrzej Wojtowicz
Implant treatment is safe and predictable with sufficient amount and quality of bone tissue. In case of severely reduced bone tissue after a tooth was lost, augmentation of such tissue is necessary before implant embedment. Retrospective evaluation covered 380 alveolar ridge reconstructions. The study material consisted of human grafts prepared by the Department of Transplantology and Central Tissue Bank, Medical University of Warsaw. Presentation of laboratory procedures in the context of physical parameters of frozen, radiation sterilised, allogeneic corticocancellous material was presented...
May 20, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28507752/effective-treatment-of-benign-biliary-strictures-with-a-removable-fully-covered-self-expandable-metal-stent-a-prospective-multicenter-european-study
#19
Arthur Schmidt, Tilman Pickartz, Markus M Lerch, Fabrizio Fanelli, Fausto Fiocca, Pierleone Lucatelli, Fabrizio Cereatti, Albrecht Hoffmeister, Werner van Steenbergen, Matthias Kraft, Benjamin Meier, Karel Caca
BACKGROUND: Temporary placement of removable, fully covered, self-expandable metal stents (fcSEMS) for treatment of benign biliary strictures (BBS) has been reported to be effective. However, the optimal extraction time point remains unclear and stent migration has been a major concern. OBJECTIVE: The objective of this study was to evaluate the efficacy and safety of this treatment modality using an fcSEMS with a special antimigration design and prolonged stent indwell time...
April 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28500662/application-of-a-novel-bioreactor-for-in-vivo-engineering-of-pancreas-tissue
#20
Javad Hashemi, Parvin Pasalar, Masoud Soleimani, Reza Khorramirouz, Kiarad Fendereski, Seyed Ehsan Enderami, Abdol-Mohammad Kajbafzadeh
Type 1 diabetes is characterized by autoimmune destruction of pancreatic cells. Organ transplantation is an acceptable treatment for native organ failure. However, it is associated with several problems due to a number of reasons, such as the lack of appropriate donors and immunosuppression. In our present study, a novel model is presented for in vivo recellularization of acellular pancreas by implanting between the host pancreas and the adjacent omental flap. In this study, the pancreases were harvested and cannulated via the common bile duct and then, the scaffolds were acellularized by a detergent-based protocol...
May 13, 2017: Journal of Cellular Physiology
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