keyword
MENU ▼
Read by QxMD icon Read
search

External connection implant

keyword
https://www.readbyqxmd.com/read/28713235/connecting-the-brain-to-itself-through-an-emulation
#1
Mijail D Serruya
Pilot clinical trials of human patients implanted with devices that can chronically record and stimulate ensembles of hundreds to thousands of individual neurons offer the possibility of expanding the substrate of cognition. Parallel trains of firing rate activity can be delivered in real-time to an array of intermediate external modules that in turn can trigger parallel trains of stimulation back into the brain. These modules may be built in software, VLSI firmware, or biological tissue as in vitro culture preparations or in vivo ectopic construct organoids...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28712018/laparoscopic-implantation-of-electrodes-for-bilateral-neuromodulation-of-the-pudendal-nerves-and-s3-nerve-roots-for-treating-pelvic-pain-and-voiding-dysfunction
#2
Adrienne L K Li, Renato Marques, Acary Oliveira, Laise Veloso, Manoel J B C Girão, Nucelio Lemos
INTRODUCTION AND HYPOTHESIS: The objective of this video is to describe the technique for laparoscopic implantation of electrodes for bilateral neuromodulation of S3 and pudendal nerves. We report a successful case of a 48-year-old woman with spina bifida occulta referred with a 14-year history of intense acyclic pelvic pain, urinary hesitancy, and intermittent flow refractory to various conservative measures. METHODS: The procedure began with the removal of two previously placed InterStims...
July 15, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28708914/misfit-of-three-different-implant-abutment-connections-before-and-after-cyclic-load-application-an-in-vitro-study
#3
Sergio Alexandre Gehrke, Rafael Arcesio Delgado-Ruiz, Juan Carlos Prados Frutos, María Prados-Privado, Berenice Anina Dedavid, Jose Manuel Granero Marín, José Luiz Calvo Guirado
PURPOSE: This study aimed to evaluate the misfit of three different implant-abutment connections before and after cycling load. MATERIALS AND METHODS: One hundred twenty dental implants and correspondent prefabricated titanium abutments were used. Three different implant-abutment connections were evaluated: Morse taper (MT group), external hexagon (EH group), and internal hexagon (IH group). Forty implants and 40 abutments were used per group. The parameters for the mechanical evaluation were set as: 360,000 cycles, load of 150 N, and frequency of 4 Hz...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28708909/biomechanical-three-dimensional-finite-element-analysis-of-single-implant-supported-prostheses-in-the-anterior-maxilla-with-different-surgical-techniques-and-implant-types
#4
Fellippo Ramos Verri, Joel Ferreira Santiago, Daniel Augusto Almeida, Victor Eduardo de Souza Batista, Cleidiel Aparecido Araujo Lemos, Caroline Cantieri Mello, Eduardo Piza Pellizzer
PURPOSE: The aim of this study was to use three-dimensional finite element analysis to analyze the stress distribution transferred by single implant-supported prostheses placed in the anterior maxilla using different connections (external hexagon, internal hexagon, or Morse taper), inclinations of the load (0, 30, or 60 degrees), and surgical techniques for placement (monocortical/conventional, bicortical, or bicortical with nasal floor elevation). MATERIALS AND METHODS: Nine models representing a bone block of this region were simulated by computer-aided design software (InVesalius, Rhinoceros, SolidWorks)...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28691474/cone-morse-implant-connection-system-significantly-reduces-bacterial-leakage-between-implant-and-abutment-an-in-vitro-study
#5
A Baj, A Bolzoni, A Russillo, D Lauritano, A Palmieri, F Cura, F J Silvestre, A B Giannì
Osseointegrated implants are very popular dental treatments today in the world. In osseointegrated implants, the occlusal forces are transmitted from prosthesis through an abutment to a dental implant. The abutment is connected to the implant by mean of a screw. A screw is the most used mean for connecting an implant to an abutment. Frequently the screws break and are lost. There is an alternative to screw retained abutment systems: the cone-morse connection (CMC). The CMC, thanks to the absence of the abutment screw, guarantees no micro-gaps, no micro-movements, and a reduction of bacterial leakage between implant and abutment...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28691468/bacterial-colonization-of-the-implant-abutment-interface-of-conical-connection-with-an-internal-octagon-an-in-vitro-study-using-real-time-pcr
#6
A Baj, G A Beltramini, A Bolzoni, F Cura, A Palmieri, A Scarano, L Ottria, A B Giannì
Bacterial leakage at the implant-abutment connection of a two-piece implant system is considered the main cause of peri-implantitis. Prevention of bacterial leakage at the implant-abutment connection is mandatory for reducing inflammation process around implant neck and achieving bone stability. Micro-cavities at implant-abutment connection level can favour bacterial leakage, even in modern two-piece implant systems. The conical connection with an internal octagon (CCIO) is considered to be more stable mechanically and allows a more tight link between implant and abutment...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28691467/bidirectional-flux-of-fluids-and-microbiota-at-implant-abutment-connection-of-fmd-storm-implant-system-an-in-vitro-stud-y-using-rt-pcr
#7
A Baj, M Romano, E Segna, A Palmieri, F Cura, A Scarano, L Ottria, A B Giannì
The purpose of the present microbiological study was to evaluate bacterial leakage at implant-abutment connection level of a new type of implant (Storm implant (FMD, Falappa Medical Devices®, Rome, Italy) using Real-Time Polymerase Chain Reaction (RT-PCR). This implant presents a polygonal external implantabutment connection with a geometry that provides a hex on which engage complementary abutments. To identify the capability of the implant to protect the internal space from the external environment, the passage of genetically modified Escherichia coli across implant-abutment interface was evaluated...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28559197/anteroposterior-rotational-references-of-the-tibia-for-medial-unicompartmental-knee-arthroplasty-in-japanese-patients
#8
Ichiro Tsukamoto, Masao Akagi, Shigeshi Mori, Shinji Inoue, Shigeki Asada, Fuminori Matsumura
BACKGROUND: In unicompartmental knee arthroplasty (UKA), there is no consensus regarding how to determine the anteroposterior (AP) reference of the tibia. A number of surgeons in Japan perform the sagittal saw cut using the medial intercondylar ridge (MIR) of the tibia according to surgical manuals. However, there is no theoretical basis for this practice. METHODS: Preoperative computed tomography data from 32 lower limbs of 31 Japanese patients who received UKA were used...
May 4, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28556604/loosening-of-the-fixing-screw-in-single-implant-crowns-predisposing-factors-prevention-and-treatment-options
#9
Stefanos Kourtis, Mariana Damanaki, Sofia Kaitatzidou, Aikaterini Kaitatzidou, Vasiliki Roussou
The problem of technical complications in implants and implant-supported restorations has existed for decades. The most frequent complication is the loosening of the fixing screw, which although is not catastrophic, if it occurs repeatedly, it may affect the success of the implant therapy and the patient satisfaction. Factors that affect the frequency of prosthetic complications include: the implant-abutment connection, para-functional habits, cantilevers, and the type of restoration. Regarding the implant-abutment connection, the first systems were those with an external hexagon...
May 27, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28532041/comparative-analysis-of-stress-in-a-new-proposal-of-dental-implants
#10
Mariana Lima da Costa Valente, Denise Tornavoi de Castro, Ana Paula Macedo, Antonio Carlos Shimano, Andréa Cândido Dos Reis
The purpose of this study was to compare, through photoelastic analysis, the stress distribution around conventional and modified external hexagon (EH) and morse taper (MT) dental implant connections. Four photoelastic models were prepared (n=1): Model 1 - conventional EH cylindrical implant (Ø 4.0mm×11mm - Neodent®), Model 2 - modified EH cylindrical implant, Model 3 - conventional MT Conical implant (Ø 4.3mm×10mm - Neodent®) and Model 4 - modified MT conical implant. 100 and 150N axial and oblique loads (30° tilt) were applied in the devices coupled to the implants...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28523715/dual-en-bloc-technique-for-adult-renal-transplantation
#11
Kim Chi Tran, David Li, Ali Taqi, Alp Sener, Vivian C McAlister, Patrick P Luke
INTRODUCTION: We describe and provide follow-up for a novel simplified technique permitting dual en-bloc (DEB) transplantation of adult organs using single in situ arterial and venous anastomoses. METHODS: Twenty-two adult DEB transplants were performed at our centre between 2001 and 2012, utilizing 44 kidneys en bloc. Results were compared with 20 solitary transplants from expanded criteria donors (ECD) associated with lower terminal serum creatinines and Remuzzi biopsy scores vs...
May 19, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28522783/splenic-abcesses-as-infectious-complication-following-127-implantation-of-left-ventricular-asssist-device-case-report
#12
Sławomir Gajda, Anna M Szczepanik, Grzegorz Religa, Andrzej Misiak, Andrzej B Szczepanik
Left ventricular assist device (LVAD) is one of the modern management therapies in patients with advanced heart failure, and it serves as a bridge to heart transplantation or even as destination therapy. However, it is burdened with a high risk of thromboembolic, hemorrhagic, and infectious complications despite prophylactic management. Splenic abscesses, as septic complications following implantation of mechanical ventricular support, have not yet been described in the literature. We report of a patient with severe left ventricular insufficiency (NYHA II/III), pulmonary hypertension, and arrhythmia who underwent implantation of the Heart Ware® pump for left ventricular support with simultaneous tricuspidvalvoplasty, as a bridge therapy to heart transplantation...
February 28, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28518184/a-method-for-minimizing-rotational-errors-of-implant-prostheses
#13
Hyeonjong Lee, Kung-Rock Kwon, Janghyun Paek, Ahran Pae, Kwantae Noh
PURPOSE: Rotational errors of implants can occur during two stages: when connecting impression copings with implants, and when connecting impression copings with analogs. The aim of this study was to determine ways to minimize these rotational errors. MATERIALS AND METHODS: Three types of implants were prepared: a tissue-level implant with an internal octagon 8-degree Morse taper connection, a bone-level implant with an internal hex 11-degree Morse taper connection, and a bone-level implant with an external hex connection...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28518084/subcutaneous-trigeminal-nerve-field-stimulation-for-refractory-facial-pain
#14
Martin Jakobs, Sigrid Schuh-Hofer, Andreas Unterberg, Rezvan Ahmadi
Chronic or neuropathic trigeminal facial pain can be challenging to treat. Neurosurgical procedures should be applied when conservative treatment fails. Neuromodulation techniques for chronic facial pain include deep brain stimulation and motor cortex stimulation, which are complex to perform. Subcutaneous nerve field stimulation is certified for chronic back pain and is the least invasive form of neuromodulation. We applied this technique to treat chronic and neuropathic trigeminal pain as an individual therapy concept...
May 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28512280/herpes-simplex-1-and-periopathogen-role-in-peri-implantitis
#15
S Parthiban, Nizar Ahmed, T Ramakrishnan, V Balakumar, Manoj Raja, Himanshu Shekhar
INTRODUCTION: The objectives of this study were to compare the qualitative and quantitative profiles of herpes simplex virus type I (HSV-1) in implant surfaces between participants with peri-implantitis (PI) and Healthy peri-implant tissues and to quantitatively assess the relation between HSV-1 and periopathogens inside the microbiological profile associated with PI. MATERIALS AND METHODS: A total of 40 patients with PI and 40 with healthy peri-implant tissues (HI) were recruited...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28470462/-connecting-adapter-for-coupling-exoprostheses-to-endoshafts-demands-on-orthopedic-technicians-with-respect-to-planning-and-application
#16
H Grundei, A Timmermann
INTRODUCTION: Transcutaneous, bone anchored prostheses have proved to be an alternative for amputees. In addition to the safe osseointegration of the implant, the correct prosthetic alignment is also important. Therefore, the interaction between prosthesis components and the prosthesis wearer is significant and the role of the certified prosthetist should not be underestimated. AIM: The aim of treatment is the best possible compensation of disability after limb loss with increase of physical abilities and comfort of the prosthesis wearer by means of bone anchored prosthesis...
May 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28427837/in-vitro-fatigue-tests-and-in-silico-finite-element-analysis-of-dental-implants-with-different-fixture-abutment-joint-types-using-computer-aided-design-models
#17
Satoshi Yamaguchi, Yasufumi Yamanishi, Lucas S Machado, Shuji Matsumoto, Nick Tovar, Paulo G Coelho, Van P Thompson, Satoshi Imazato
PURPOSE: The aim of this study was to evaluate fatigue resistance of dental fixtures with two different fixture-abutment connections by in vitro fatigue testing and in silico three-dimensional finite element analysis (3D FEA) using original computer-aided design (CAD) models. METHODS: Dental implant fixtures with external connection (EX) or internal connection (IN) abutments were fabricated from original CAD models using grade IV titanium and step-stress accelerated life testing was performed...
April 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28395539/unlocking-the-box-basic-requirements-for-an-ideal-ventricular-assist-device-controller
#18
Alexander L Medvedev, Jamshid H Karimov, Barry D Kuban, David J Horvath, Nader Moazami, Kiyotaka Fukamachi
A modern ventricular assist device (VAD) system comprises an implantable rotary blood pump and external components located outside the patient's body: a wearable controller connected to the pump via a percutaneous cable, wearable rechargeable batteries, battery charger, alternating- and direct-current power supplies, and a hospital device to control and monitor the system. If the blood pump is the 'heart' of a VAD system, the controller is its 'brain.' The controller drives the pump's electrical motor; varies the pump speed or flow based on user commands or feedback signals; collects, processes, and stores data; performs self-diagnostics; transmits to and receives data from other system components, i...
April 19, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28348591/microbiological-sealing-analysis-of-a-tapered-connection-and-external-hexagon-system
#19
Gardel Nepomuceno Costa, Elizabeth Ferreira Martinez, Aluísio Martins de Oliveira Ruellas, Daiane Cristina Peruzzo, Júlio Cesar Joly, Marcelo Henrique Napimoga
Considering the variety of implant connection systems available in the market and the contrasting literature regarding tapered connection systems in terms of bacterial leakage, the aim of this in vitro study was to compare the effectiveness of the bacterial seal at the implant/abutment interface between an external hexagon and a tapered connection system. Twelve sets of indexed tapered connection components and twelve sets of external hexagon connection components were used for microbiological analysis. In addition, for each model, an implant with its respective prosthetic abutment was used as a negative control and another as a positive control of microbial contamination...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28339448/efficacious-dorsal-root-ganglion-stimulation-for-painful-small-fiber-neuropathy-a-case-report
#20
Paolo Maino, Eva Koetsier, Alain Kaelin-Lang, Claudio Gobbi, Roberto Perez
Small fiber neuropathy is a disorder of the peripheral nerves with typical symptoms of burning, sharp, and shooting pain and sensory disturbances in the feet. Pain treatment depends principally on the underlying etiology with concurrent administration of antidepressants, anticonvulsants, opioids, and topical treatments like capsaicin and local anesthetics. However, treatments for pain relief in these patients frequently fail. We describe the first case of intractable painful small fiber neuropathy of the foot successfully treated with spinal cord stimulation of the left L5 dorsal root ganglion...
March 2017: Pain Physician
keyword
keyword
71167
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"