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https://www.readbyqxmd.com/read/28445906/-bipolar-stimulation-may-improve-the-efficacy-of-the-percutaneous-nerve-evaluation-test-of-sacral-neuromodulation
#1
André Reitz, Tanja Hüsch, Regula Doggweiler, Stephan Buse, Axel Haferkamp
Purpose This study evaluates the hypothesis that bipolar stimulation of the S3 and S4 sacral roots may enhance the efficacy of the percutaneous nerve evaluation (PNE) test. Material and Methods In this case-control-study, we enrolled 43 patients undergoing bipolar PNE and 57 controls undergoing unipolar PNE. For bipolar PNE, four test electrodes were placed at the bilateral S3 and S4 roots. The electrodes at the S3 and S4 roots of each side were connected to obtain bipolar stimulation. The test protocol over eight days included unilateral and bilateral stimulation of the S3 and S4 sacral roots...
April 26, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28441246/x-ray-imaging-analysis-of-intrathecal-baclofen-pumps-for-pediatric-emergency-medicine
#2
Brianna Nicole Carr, Thomas Sernas, Catherine A Mazzola
Intrathecal baclofen therapy has become increasingly popular because of its effectiveness in treating spasticity in pediatric patients. The device implanted into each patient is structurally similar. However, x-ray imaging can give the appearance of missing or extraneous objects on or near the intrathecal baclofen device. The composition of the material used in making the catheters is transparent on x-ray images. In addition, the connection port between the pump and catheter resembles the shape of a needle...
April 24, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28438860/bone-regeneration-of-hydroxyapatite-with-granular-form-or-porous-scaffold-in-canine-alveolar-sockets
#3
Seok Jin Jang, Se Eun Kim, Tae Sung Han, Jun Sik Son, Seong Soo Kang, Seok Hwa Choi
This study was undertaken to assess bone regeneration using hydroxyapatite (HA). The primary focus was comparison of bone regeneration between granular HA (gHA) forms and porous HA (pHA) scaffold. The extracted canine alveolar sockets were divided with three groups: control, gHA and pHA. Osteogenic effect in the gHA and pHA groups showed bone-specific surface and bone mineral density to be significantly higher than that of the control group (p<0.01). Bone volume fraction, bone mineral density, and amount of connective tissue related to disturbing osseointegration of the gHA group was higher than in the pHA group...
May 2017: In Vivo
https://www.readbyqxmd.com/read/28436055/implantation-window-and-angiogenesis
#4
Mostafa Peyvandi Karizbodagh, Bahman Rashidi, Amirhossein Sahebkar, Aria Masoudifar, Hamed Mirzaei
In recent decades, infertility is one of the health problems worldwide. One of the most crucial events in reproductive period is implantation window (IW). In the time after IW period, the embryo cannot connect to the endometrium; therefore the most critical issue for successful implantation is timely entrance of embryo to the uterine cavity during the IW. Implantation failure is responsible for many cases of infertility and is the most important limiting factor for achieving a successful outcome using the assisted reproductive techniques (ART)...
April 24, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28431724/retrosternal-implantation-of-the-cardioverter-defibrillator-lead-in-an-infant
#5
Hiroaki Hata, Naokata Sumitomo, Toshiko Nakai, Atsushi Amano
Using an implantable cardioverter-defibrillator (ICD) in small children is still challenging, but the need is increasing. We present a new approach to overcoming ICD problems caused by growth in infants. A redundant ICD lead was fixed to the superior border of the sternum and tunneled retrosternally to the subxiphoid region for connection to the generator, which was placed in a pocket beneath the left transversus abdominis muscle. The redundant retrosternal part of the lead straightened during growth, while cardiac coverage by the cardioversion energy field and the defibrillation vector were maintained appropriately...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28429394/immediate-implant-placement-and-restoration-in-the-anterior-maxilla-tissue-dimensional-changes-after-2-5-year-follow-up
#6
Himanshu Arora, Nabil Khzam, David Roberts, William L Bruce, Saso Ivanovski
BACKGROUND: Immediate implant placement followed by an immediate restoration has proven to be a viable technique in the anterior maxillary region. PURPOSE: This prospective study evaluated the mid-long term (2-5 years) tissue changes around immediately placed and restored implants in the anterior maxilla using flapless surgery and simultaneous hard tissue augmentation. MATERIALS AND METHODS: Thirty AstraTech implants were immediately placed in 30 patients, followed by the delivery of an immediate provisional restoration on the same day...
April 21, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28429365/a-randomized-clinical-trial-about-presence-of-pathogenic-microflora-and-risk-of-peri-implantitis-comparison-of-two-different-types-of-implant-abutment-connections
#7
F Mencio, F De Angelis, P Papi, D Rosella, G Pompa, S Di Carlo
OBJECTIVE: The aim of this in vivo study was to evaluate two different types of implant-abutment connections: screwed connection and cemented connection, analyzing peri-implant bacteria microflora as well as other clinical parameters. PATIENTS AND METHODS: Twenty implants were selected, inserted in 20 patients, 10 with a screwed implant-abutment connection (Group 1) and 10 with a cemented implant-abutment connection (Group 2). The peri-implant microflora was collected, after at least 360 days from the prosthetic rehabilitation, using paper points inserted in peri-implant sulcus for 30 s...
April 2017: European Review for Medical and Pharmacological Sciences
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
#8
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/28420771/updates-in-hearing-technology
#9
Patricia Johnson
Advances in hearing technology offer patients with hearing loss even better ways to improve communication and quality of life. Hearing devices are more convenient and compatible than ever, with wireless connectivity to smartphones and lithium-ion rechargeable batteries, while improved surgical techniques widen the candidacy for cochlear implants to those with more residual hearing.
March 2017: North Carolina Medical Journal
https://www.readbyqxmd.com/read/28415466/effect-of-lubricant-on-the-reliability-of-dental-implant-abutment-screw-joint-an-in-vitro-laboratory-and-three-dimension-finite-element-analysis
#10
Tingting Wu, Hongyi Fan, Ruiyang Ma, Hongyu Chen, Zhi Li, Haiyang Yu
Biomechanical factors play a key role in the success of dental implants. Fracture and loosening of abutment screws are major issues. This study investigated the effect of lubricants on the stability of dental implant-abutment connection. As lubricants, graphite and vaseline were coated on the abutment screw surface, respectively, and a blank without lubricant served as the control. The total friction coefficient (μtot), clamping force, fatigue behavior and detorque of the joint combined with dynamic cyclic loading were measured under different lubricating conditions...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28411451/anisotropic-tough-double-network-hydrogel-from-fish-collagen-and-its-spontaneous-in%C3%A2-vivo-bonding-to-bone
#11
Md Tariful Islam Mredha, Nobuto Kitamura, Takayuki Nonoyama, Susumu Wada, Keiko Goto, Xi Zhang, Tasuku Nakajima, Takayuki Kurokawa, Yasuaki Takagi, Kazunori Yasuda, Jian Ping Gong
Soft supporting tissues in the human body, such as cartilages and ligaments, are tough materials and firmly fixed to bones. These soft tissues, once injured, cannot regenerate spontaneously in vivo. Developing tough and biocompatible hydrogels as artificial soft supporting tissues would substantially improve outcomes after soft tissue injury. Collagen is the main rigid component in soft connective tissues which is organized in various hierarchical arrays. We have successfully developed a novel class of collagen fibril-based tough hydrogels based on the double network (DN) concept using swim bladder collagen (SBC) extracted from Bester sturgeon fish...
July 2017: Biomaterials
https://www.readbyqxmd.com/read/28403248/effect-of-buccal-implant-inclination-on-stresses-around-two-implant-retained-overdentures-with-resilient-stud-attachments
#12
Moustafa Abdou Elsyad, Karima Salah Abid, Elsayed Abd Elkhalek
PURPOSE: This study aimed to evaluate the effect of buccal implant inclination on stresses around two-implant-retained overdentures with resilient stud attachments. MATERIALS AND METHODS: Four acrylic models representing a mandibular edentulous ridge were constructed. For each model, two implants were placed at canine areas. Models were classified into four types according to the degree of buccal implant inclination: Group I (GI, 0 degrees), Group II (GII, 10 degrees), Group III (GIII, 20 degrees), and Group IV (GIV, 30 degrees)...
April 12, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28402355/digitally-milled-metal-framework-for-fixed-complete-denture-with-metal-occlusal-surfaces-a-design-concept
#13
Bader AlBader, Abdulaziz AlHelal, Periklis Proussaefs, Antonela Garbacea, Mathew T Kattadiyil, Jaime Lozada
Implant-supported fixed complete dentures, often referred to as hybrid prostheses, have been associated with high implant survival rates but also with a high incidence of mechanical prosthetic complications. The most frequent of these complications have been fracture and wear of the veneering material. The proposed design concept incorporates the occlusal surfaces of the posterior teeth as part of a digital milled metal framework by designing the posterior first molars in full contour as part of the framework...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28402353/peri-implant-soft-tissue-stability-after-single-implant-restorations-using-either-guided-bone-regeneration-or-a-connective-tissue-graft-a-randomized-clinical-trial
#14
Chiara D'Elia, Nicola Baldini, Edoardo Ferrari Cagidiaco, Giacomo Nofri, Cecilia Goracci, Massimo de Sanctis
The purpose of the present study was to compare two different surgical procedures, connective tissue graft and guided bone regeneration, when applied in conjunction with implant placement. Probing pocket depth and the recession depth were recorded at the implant site after crown placement (T₁) and at the 1-year follow-up (T₂), while the keratinized tissue height and the buccal mucosa thickness were recorded at three different time points: at the time of implant surgery (T₀), after crown placement, and at the 1-year follow-up...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28401929/the-effect-of-l-prf-membranes-on-bone-healing-in-rabbit-tibiae-bone-defects-micro-ct-and-biomarker-results
#15
Fernanda Faot, Sanne Deprez, Katleen Vandamme, Germana V Camargos, Nelson Pinto, Jasper Wouters, Joost van den Oord, Marc Quirynen, Joke Duyck
More insight into the biological fundamentals of leukocyte platelet-rich fibrin (L-PRF) guided healing is necessary to recommend its application, in particular in deficient bone sites that need to support implants. This study investigated the short-term bone healing effect of L-PRF treatment in cylindrical non-critical sized bone defects with 3 mm diameter and 6 mm depth in tibiae of 18 adult male New Zealand White rabbits. After a randomization process, 96 bone defects were prepared and half of them were filled with a L-PRF membrane, while untreated defects in the opposite tibia served as control group...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28398014/brain-responsive-neurostimulation-in-patients-with-medically-intractable-mesial-temporal-lobe-epilepsy
#16
Eric B Geller, Tara L Skarpaas, Robert E Gross, Robert R Goodman, Gregory L Barkley, Carl W Bazil, Michael J Berg, Gregory K Bergey, Sydney S Cash, Andrew J Cole, Robert B Duckrow, Jonathan C Edwards, Stephan Eisenschenk, James Fessler, Nathan B Fountain, Alicia M Goldman, Ryder P Gwinn, Christianne Heck, Aamar Herekar, Lawrence J Hirsch, Barbara C Jobst, David King-Stephens, Douglas R Labar, James W Leiphart, W Richard Marsh, Kimford J Meador, Eli M Mizrahi, Anthony M Murro, Dileep R Nair, Katherine H Noe, Yong D Park, Paul A Rutecki, Vicenta Salanova, Raj D Sheth, Donald C Shields, Christopher Skidmore, Michael C Smith, David C Spencer, Shraddha Srinivasan, William Tatum, Paul C Van Ness, David G Vossler, Robert E Wharen, Gregory A Worrell, Daniel Yoshor, Richard S Zimmerman, Kathy Cicora, Felice T Sun, Martha J Morrell
OBJECTIVE: Evaluate the seizure-reduction response and safety of mesial temporal lobe (MTL) brain-responsive stimulation in adults with medically intractable partial-onset seizures of mesial temporal lobe origin. METHODS: Subjects with mesial temporal lobe epilepsy (MTLE) were identified from prospective clinical trials of a brain-responsive neurostimulator (RNS System, NeuroPace). The seizure reduction over years 2-6 postimplantation was calculated by assessing the seizure frequency compared to a preimplantation baseline...
April 11, 2017: Epilepsia
https://www.readbyqxmd.com/read/28397454/histological-evaluation-of-the-local-soft-tissue-reaction-after-implanting-resorbable-and-non-resorbable-monofilament-fibers
#17
Bogusława Żywicka, Maria Szymonowicz, Danuta Bryła, Zbigniew Rybak
BACKGROUND: The development of technologies and scientific disciplines connected with medical implantation devices is dynamically affecting modern treatments by contemporary medicine and veterinary medicine; it also entails a need to monitor their impact on living organisms. OBJECTIVES: The aim of the study was to conduct a comparative histological evaluation of the response of soft tissues after implanting monofilament fibers from resorbable glyconate and from non-resorbable polypropylene (PP) and polyamide (PA) in rats...
July 2016: Polimery W Medycynie
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 11, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28389372/rat-tissue-reaction-and-cytokine-production-induced-by-antimicrobial-photodynamic-therapy
#19
Gustavo Sivieri-Araujo, Índia Olinta de Azevedo Queiroz, Renan Dal Fabbro, Fernanda Esteves, Luciano Tavares Angelo Cintra, Paulo Carvalho Tobias Duarte, Vanderlei Salvador Bagnato, Sandra Helena Penha de Oliveira, João Eduardo Gomes-Filho
BACKGROUND: The antimicrobial photodynamic therapy (aPDT) inactivates the target cell via reactions among the photosensitizer (PS), Laser or Led and O2. The aim of this study was to evaluate the tissue reaction and cytokine production promoted by aPDT with curcumin photosensitizer. METHODS: Polyethylene tubes containing saline solution (control), 5% sodium hypochlorite (NaOCl) and aPDT with curcumin PS 500mg/L, were implanted into dorsal connective tissue of Wistar rats...
April 4, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28389179/bone-anchored-intermaxillary-elastics-in-an-asymmetric-class-ii-malocclusion-a-case-report
#20
Antonio Manni, Daniela Lupini, Mauro Cozzani
PURPOSE: A 13-year-old male patient, presenting a Class II, division 1 malocclusion and crowding was treated by an innovative technique. METHODS: After rapid palatal expansion by a Hyrax appliance, the teeth were bonded with straightwire brackets. Two miniscrews were inserted, one per side, in the mandibular buccal bone between the roots of the mandibular first molar and the second premolar. On the right side, the miniscrew implant was connected to the hook clamped on a 0...
April 4, 2017: International Orthodontics
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