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Implant connection

David S Freedman, Joseph B Schroeder, Gregory I Telian, Zhengyang Zhang, Smrithi Sunil, Jason T Ritt
OBJECTIVE: Behavioral neuroscience studies in freely moving rodents require small, light-weight implants to facilitate neural recording and stimulation. Our goal was to develop an integrated package of 3D printed parts and assembly aids for labs to rapidly fabricate, with minimal training, an implant that combines individually positionable microelectrodes, an optical fiber, zero insertion force (ZIF-clip) headstage connection, and secondary recording electrodes, e.g. for electromyography (EMG)...
October 20, 2016: Journal of Neural Engineering
E A Devyatova, K A Tsaturova, E V Vartanyan
Many of the uterine infertility factors are associated with chronic endometritis. Its prevalence reaches 92.6%. Quality of endometrial transformation during the "implantation window" is the basis of successful fertility. In our retrospective comparative study of 101 in vitro fertilization (IVF) cycles, the efficacy of transvaginal Doppler ultrasound (TVDUS) in predicting successful implantation was evaluated. Inclusion criteria were as follows: age younger than 41 years and good quality of embryos. Exclusion criteria were as follows: 41 and older age, poor quality of embryos and uterine cavity lesions...
October 2016: Gynecological Endocrinology
Matthew L Bush, Robin Thompson, Catherine Irungu, John Ayugi
OBJECTIVE: The purpose of this study was to assess the feasibility and effectiveness of live telemedicine applications in hearing amplification and cochlear implantation. DATA SOURCES AND STUDY SELECTION: A systematic search was performed in PubMed, MEDLINE, PsychINFO, CINALH, and Web of Science to identify peer-reviewed research. Inclusion criteria were titles containing words from the search terms 1) audiology, otolaryngology, and hearing impairment, 2) rehabilitative methods, and 3) telemedicine...
October 12, 2016: Otology & Neurotology
Erick Silva, Emanuela Prado Ferraz, Evandro Carneiro Martins Neto, Liat Chaushu, Gavriel Chaushu, Samuel Porfirio Xavier
The aim of this prospective controlled study present study is to evaluate volumetric changes of newly created bone following reconstruction of the atrophic posterior mandible using FFB. Twenty consecutive patients presenting for reconstruction of posterior mandibular alveolar bone ridge width ≤ 6.0 mm and/or height≤ 6.0 who met all inclusion and exlusion criteria were included. FFB blocks were used. The main outcome variable investigated was bone volume dynamics. Vertical, horizontal and three-dimensional bone gain data was measured from computerized tomography scans...
October 18, 2016: Journal of Oral Implantology
L Westover, G Faulkner, W Hodgetts, D Raboud
This study presents the Advanced System for Implant Stability Testing (ASIST) which provides a non-invasive, quantitative measure of the stability of percutaneous implants used for craniofacial rehabilitation such as bone anchored hearing aids or dental implants. The ASIST uses an impact technique coupled with an analytical model which allows the measure to be independent of the system components. This paper presents a laboratory evaluation of the ASIST for the Oticon Medical Ponto and the Cochlear Baha Connect bone anchored hearing aid (BAHA) systems...
October 6, 2016: Journal of Biomechanics
Viktor Feldman, Meir Nyska, Niv Marom, Omer Slavin, Yaron S Brin, Uri Farkash, Ezequiel Palmanovich
BACKGROUND: This study was designed to measure transverse forces between the 1st and 2nd metatarsals after reducing the intermetatarsal angle (IMA) in normal and hallux valgus (HV) feet, during non weight-bearing and weight-bearing phases of gait. METHODS: Four cadaver feet, three normal and one with hallux valgus, were used. A new suture button device (CyclaPlex™) composed of screw-type buttons connected with a wire was implanted at the mid-shaft of the 1st and 2nd metatarsals of all the feet...
October 17, 2016: Journal of Orthopaedic Surgery and Research
Rodrigo Rios, Susan R Foerster, Todd M Gudausky
The Melody® transcatheter pulmonary valve system was developed for placement within right ventricle-to-pulmonary artery conduits in patients with CHD for treatment of stenosis or regurgitation, providing an alternative to open-heart surgery. Abnormal systemic venous connections altering the catheter course to the right ventricle-to-pulmonary artery conduit may present a challenge to Melody® valve implantation. We present two such cases, in which the Melody® valve was successfully implanted in teenage patients with congenitally corrected transposition of the great arteries after Senning atrial switch operation...
October 17, 2016: Cardiology in the Young
Fumihiko Watanabe, Kazuhiko Hiroyasu, Kazuhiko Ueda
BACKGROUND: Fractured connections between implants and implant abutments or abutment screws are frequently encountered in a clinical setting. The purpose of this study was to investigate fracture strength using a torsion test at the interface between the implant and the abutment. METHODS: Thirty screw-type implant with diameters of 3.3, 3.8, 4.3, 5.0, and 6.0 mm were submitted to a torsion test. Implants of each size were connected to abutments with abutment screws tightened to 20 N · cm...
December 2015: Int J Implant Dent
Daisuke Ueno, Takashi Kurokawa, Katsuichiro Maruo, Tsuneaki Watanabe, Jayanetti Asiri Jayawardena
INTRODUCTION: Perforation of the Schneiderian membrane is the most common complication in sinus floor augmentation (SFA). When volume of grafting is qualified to prevent enlargement of the membrane perforation, lack of bone volume may occur in optimal site. CASE PRESENTATION: SFA was performed in sites #24 to 26 in a 63-year-old male. However, a 10-mm size perforation of the Schneiderian membrane occurred in site #26. Although the sinus cavity was grafted with deproteinized bovine bone mineral (DBBM) after repair of membrane perforation, insufficient bone formation was observed on palatal and distal aspects of site #26 at 5 months after SFA...
December 2015: Int J Implant Dent
Daisuke Ueno, Jayanetti Asiri Jayawardena, Takashi Kurokawa
Soft tissue dehiscence around dental implant has frequently been observed and it may lead to poor oral hygiene, especially around crowns that exhibit contours with prominent convexity. The present case demonstrates a peri-implant mucosal dehiscence coverage with modified semilunar coronary positioned flap (CPF) in #15 and 16. A semilunar partial-thickness incision was performed 7-10 mm apical from the facial gingival margin. Then, intrasulcular partial-thickness incision was tunneled to the semilunar incision...
December 2015: Int J Implant Dent
Arun Ramchandran, Kaushal Kishor Agrawal, Pooran Chand, Ramashanker, Raghuwar Dayal Singh, Anusar Gupta
The Kennedy Class I and II distal extension situation poses a challenge to the prosthodontist as it inherently possesses a lack of stability, which may be attributed to the difference in compressibility of the mucosa and the periodontal ligament surrounding the distal-most abutment tooth. This results in a rotational tendency of the prosthesis around the line connecting its terminal abutments. Placement of osseointegrated dental implants in the posterior edentulous regions, distal to the terminal abutment provides improved vertical support to the distal extension removable partial denture, effectively converting its intraoral performance from a Kennedy Class I to a Class III situation, thereby resulting in improved stability of the prosthesis and consequently, enhanced patient satisfaction...
October 2016: Journal of Indian Prosthodontic Society
Raquel Castillo-Oyagüe, Carmen Perea, María-Jesús Suárez-García, Jaime Del Río, Christopher D Lynch, Arelis Preciado
OBJECTIVES: To validate the 'Quality of Life related to function, aesthetics, socialization, and thoughts about health-behavioural habits (QoLFAST-10)' questionnaire for assessing the whole concept of oral health-related quality of life (OHRQoL) of implant-supported fixed partial denture (FPD) wearers. METHODS: 107 patients were assigned to: Group 1 (HP; n=37): fixed-detachable hybrid prostheses (control); Group 2 (C-PD, n=35): cemented partial dentures; and Group 3 (S-PD, n=35): screwed partial dentures...
October 13, 2016: Journal of Dentistry
Inyoung Lee, Takashi Sode, Noya Loew, Wakako Tsugawa, Christopher Robin Lowe, Koji Sode
An ultimate goal for those engaged in research to develop implantable medical devices is to develop mechatronic implantable artificial organs such as artificial pancreas. Such devices would comprise at least a sensor module, an actuator module, and a controller module. For the development of optimal mechatronic implantable artificial organs, these modules should be self-powered and autonomously operated. In this study, we aimed to develop a microcontroller using the BioCapacitor principle. A direct electron transfer type glucose dehydrogenase was immobilized onto mesoporous carbon, and then deposited on the surface of a miniaturized Au electrode (7mm(2)) to prepare a miniaturized enzyme anode...
September 28, 2016: Biosensors & Bioelectronics
Paul P Lin, Lewis Claman, Hua-Hong Chien
The success of dental implant therapy in the esthetic zone requires not only functional osseointegration but also favorable esthetic results. The greatest challenge in the esthetic zone is to establish harmony, balance, and continuity of gingival form between implant restorations and the adjacent natural teeth. In the esthetic zone, a localized ridge defect or loss of a peri-implant papilla is common and can be corrected via soft tissue augmentation. This case report describes a novel surgical technique using connective tissue grafts via an apical pouch to increase soft tissue volume over an alveolar ridge defect or around natural teeth or implants in the maxillary anterior area...
November 2016: International Journal of Periodontics & Restorative Dentistry
Elen Guerra, Cristiane Pereira, Renata Faria, Antonio Olavo Jorge, Marco Antonio Bottino, Renata Marques de Melo
This study evaluated the in vitro bacterial microleakage at the implant-abutment interface of three prosthetic connections: external (EH) and internal hexagon (IH) and taper connection (TC: solid [ST], taper with internal hexagon [IT], and short taper [OT]). Escherichia coli (E coli) and Streptococcus sanguinis (S sanguinus) were inoculated in the apical portion of the abutment screw, which was immersed in sterile brain-heart infusion broth for 14 days. There were no differences between the percentages of bacterial infiltration for IH (9...
November 2016: International Journal of Periodontics & Restorative Dentistry
C Maiorana, D Andreoni, P P Poli
Particularly in the premaxillary area, the stability of hard and soft tissues plays a pivotal role in the success of the rehabilitation from both a functional and aesthetic aspect. The present case report describes the clinical management of a localized alveolar ridge atrophy in the area of the upper right canine associated with a thin gingival biotype with a lack of keratinized tissue. An autogenous bone block harvested from the chin associated with heterologous bone particles was used to replace the missing bone, allowing for a prosthetic driven implant placement...
2016: Case Reports in Dentistry
Lloyd Roffe, Anthony J FitzPatrick, Geoffrey W Rodgers, Tim B F Woodfield, Gary J Hooper
: Squeaking in ceramic-on-ceramic total hip arthroplasty was investigated with an acoustic monitoring device to distinguish between squeaking emanating from the Trunnion Morse Taper connection versus the articular surface. Eighty-two patients with implant problems scheduled for revision were selected and acoustic emissions with simple movements monitored. Five of these patients with ceramic-on-ceramic implants underwent surgery and their retrieved implant components were analysed in vitro...
October 13, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Tsuyoshi Shimo, Masaharu Takigawa
Angiogenesis, the process of generating new blood vessels from an existing vasculature, is essential in normal developmental processes such as endochondral ossification and in numerous kinds of pathogenesis including tumor growth. A part from the action of angiogenic factor or antiangiogenic factor, it is still unknown at which stage of the angiogenic cascade these agents affect angiogenesis. Here, we describe methods for the use of connective tissue growth factor (CTGF/CCN2) and CCN2 neutralizing antibody in the currently used principal angiogenesis assays, including those in vitro ones for the proliferation, migration, adhesion, and tube formation of endothelial cells and in vivo assays such as those utilizing type I collagen implantation and the chick chorioallantoic membrane (CAM)...
2017: Methods in Molecular Biology
Michael A Rothfuss, Nicholas G Franconi, Jignesh V Unadkat, Michael L Gimbel, Alexander Star, Marlin H Mickle, Ervin Sejdic
Current totally implantable wireless blood flow monitors are large and cannot operate alongside nearby monitors. To alleviate the problems with the current monitors, we developed a system to monitor blood flow wirelessly, with a simple and easily interpretable real-time output. To the best of our knowledge, the implanted electronics are the smallest in reported literature, which reduces bio-burden. Calibration was performed across realistic physiological flow ranges using a syringe pump. The device's sensors connected directly to the bilateral femoral veins of swine...
2016: IEEE Journal of Translational Engineering in Health and Medicine
Roland Hilling-Smith, James Cockburn, Maureen Dooley, Jessica Parker, Andrea Newton, Andrew Hill, Uday Trivedi, Adam de Belder, David Hildick-Smith
: Transcatheter aortic valve implantation (TAVI) and balloon aortic valvuloplasty (BAV) are now well established percutaneous procedures. These procedures almost always require bursts of rapid ventricular pacing to temporarily reduce cardiac output to facilitate the procedure, usually done via a temporary pacing wire inserted into the right ventricle. We describe a case series of 132 cases of TAVI and 76 BAV done using ventricular pacing via the left ventricular lead by simply connecting one electrode to the patient's skin and one electrode through the left ventricular (LV) wire...
October 11, 2016: Catheterization and Cardiovascular Interventions
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