keyword
MENU ▼
Read by QxMD icon Read
search

All on four implant

keyword
https://www.readbyqxmd.com/read/28938033/effect-of-attachment-type-on-implant-strain-in-maxillary-implant-overdentures-comparison-of-ball-locator-and-magnet-attachments-part-1-overdenture-with-palate
#1
Toshihito Takahashi, Tomoya Gonda, Yoshinobu Maeda
PURPOSE: Implant overdentures with attachments have been used in clinical practice and the effect of attachments on implant strain has been frequently reported. However, most studies have focused on mandibular overdentures; there are few reports on maxillary overdentures. The purpose of this study was to examine the influence of attachment type on implant strain in maxillary overdentures under various implant configurations. MATERIALS AND METHODS: A maxillary edentulous model with implants and experimental overdentures were fabricated...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938032/efficacy-of-sealing-agents-on-preload-maintenance-of-screw-retained-implant-supported-prostheses
#2
Camila Berbel Seloto, Henrico Badaoui Strazzi Sahyon, Paulo Henrique Dos Santos, Juliana Aparecida Delben, Wirley Gonçalves Assunção
PURPOSE: The aim of this study was to evaluate the effect of sealing agents on preload maintenance of screw joints. MATERIALS AND METHODS: A total of four groups (n = 10 in each group) of abutment/implant systems, including external hexagon implants and antirotational UCLA abutments with a metallic collar in cobalt-chromium alloy, were assessed. In the control group (CG), no sealing agent was used at the abutment screw/implant interface. In the other groups, three different sealing agents were used at the abutment screw/implant interface: anaerobic sealing agent for medium torque (ASMT), anaerobic sealing agent for high torque (ASHT), and cyanoacrylate-based bonding agent (CYAB)...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938028/association-between-implant-abutment-microgap-and-implant-circularity-to-bacterial-leakage-an-in-vitro-study-using-tapered-connection-implants
#3
Eduardo Cláudio Lopes de Chaves E Mello Dias, Marcelo Sperandio, Marcelo Henrique Napimoga
PURPOSE: The aim of this study was to evaluate the microgap between the abutment and implant as well as the circularity of implant platforms and associating conformational errors with bacterial microleakage in tapered connection implant systems. MATERIALS AND METHODS: Four brands of implants with a tapered abutment connection were tested. Bacterial leakage was assessed using 0.3 μL of Escherichia coli suspension inoculated into the abutment screw chamber of the implants, which were then torqued and incubated at 37°C for 14 days...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28927455/eight-orthopedic-surgeons-achieved-moderate-to-excellent-reliability-measuring-the-preoperative-posterior-tilt-angle-in-50-garden-i-and-garden-ii-femoral-neck-fractures
#4
Filip C Dolatowski, Sigurd Erik Hoelsbrekken
BACKGROUND: Studies of elderly patients with Garden-I and Garden-II femoral neck fractures (FNFs) suggest that a preoperative posterior tilt of the femoral head of at least 20° increases the risk of fixation failure. A recently published treatment algorithm recommended hemiarthroplasty over internal fixation for elderly patients with Garden-I and Garden-II FNFs and a preoperative posterior tilt of at least 20°. However, the reliability of the method used to measure the posterior tilt has not been assessed according to recommended standards for reliability trials...
September 19, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28923546/influence-of-implant-abutment-material-and-ceramic-thickness-on-optical-properties
#5
Bundhit Jirajariyavej, Peeraphorn Wanapirom, Chuchai Anunmana
STATEMENT OF PROBLEM: Anterior shade matching is an essential factor influencing the esthetics of a ceramic restoration. Dentists face a challenge when the color of an implant abutment creates an unsatisfactory match with the ceramic restoration or neighboring teeth. PURPOSE: The purpose of this in vitro study was to evaluate the influence of abutment material and ceramic thickness on the final color of different ceramic systems. MATERIAL AND METHODS: Four experimental and control ceramic specimens in shade A3 were cut from IPS e...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28906510/retrospective-analysis-on-survival-rate-template-related-complications-and-prevalence-of-peri-implantitis-of-694-anodized-implants-placed-using-computer-guided-surgery-results-between-1-and-10-years-of-follow-up
#6
Marco Tallarico, Silvio Mario Meloni
PURPOSE: To report survival rate, early surgical template-related complications, and prevalence of peri-implantitis of dental implants placed in private practices using computer-guided, template-assisted surgery and followed between 1 and 10 years. MATERIALS AND METHODS: The present retrospective multicenter study evaluated data collected from fully or partially edentulous patients, with anodized-surface implants placed using computer-guided, template-assisted surgery between January 2006 and December 2015...
September 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28906240/listening-effort-measured-in-adults-with-normal-hearing-and-cochlear-implants
#7
Ann E Perreau, Yu-Hsiang Wu, Bailey Tatge, Diana Irwin, Daniel Corts
BACKGROUND: Studies have examined listening effort in individuals with hearing loss to determine the extent of the impairment. Regarding cochlear implants (CIs), results suggest that listening effort is improved using bilateral CIs compared to unilateral CIs. Few studies have investigated listening effort and outcomes related to the hybrid CI. PURPOSE: Here, we compared listening effort across three CI groups, and to a normal-hearing control group. The impact of listener traits, that is, age, age at onset of hearing loss, duration of CI use, and working memory capacity, were examined relative to listening effort...
September 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28906014/development-and-initial-validation-of-a-novel-smoothed-particle-hydrodynamics-based-simulation-model-of-trabecular-bone-penetration-by-metallic-implants
#8
Sloan A Kulper, Christian X Fang, Xiaodan Ren, Margaret Guo, K Y Sze, Frankie Kl Leung, William W Lu
A novel computational model of implant migration in trabecular bone was developed using smoothed-particle hydrodynamics (SPH), and an initial validation was performed via correlation with experimental data. Six fresh-frozen human cadaveric specimens measuring 10 × 10 × 20 mm were extracted from the proximal femurs of female donors (mean age of 82 years, range 75-90, BV/TV ratios between 17.88-30.49%). These specimens were then penetrated under axial loading to a depth of 10 mm with 5 mm diameter cylindrical indenters bearing either flat or sharp/conical tip designs similar to blunt and self-tapping cancellous screws, assigned in a random manner...
September 14, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28902805/the-effect-of-hearing-aids-and-cochlear-implants-on-balance-during-gait
#9
Tyler S Weaver, Corey S Shayman, Timothy E Hullar
HYPOTHESIS: Auditory input in people with hearing impairment will improve balance while walking. BACKGROUND: Auditory input is increasingly recognized as an additional input for balance. Several studies have found auditory cues to improve static balance measured on a sway platform. The effect of audition on gait, a dynamic task also linked to fall risk, has not been fully examined. If a positive effect were shown between audition and balance, it would further indicate that improving hearing could also improve balance...
October 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28902426/surgical-treatment-of-peri-implantitis-3-year-results-from-a-randomized-controlled-clinical-trial
#10
Olivier Carcuac, Jan Derks, Ingemar Abrahamsson, Jan L Wennström, Max Petzold, Tord Berglundh
OBJECTIVES: This study reports on the 3-year follow-up of patients enrolled in a randomized controlled clinical trial on surgical treatment of advanced peri-implantitis. MATERIAL & METHODS: 100 patients with advanced peri-implantitis were randomly assigned to one of four treatment groups. Surgical therapy aiming at pocket elimination was performed and, in three test groups, supplemented by either systemic antibiotics, use of an antiseptic agent for implant surface decontamination or both...
September 13, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28898448/neutral-glenoid-alignment-in-reverse-shoulder-arthroplasty-does-not-guarantee-decreased-risk-of-impingement
#11
Julien Berhouet, Lawrence Gulotta, Xiang Chen, David Dines, Russel Warren, Andreas Kontaxis
Reverse Shoulder Arthroplasty (RSA) has gained popularity over the recent years, but impingement concerns are still present. Surgeons aim to correct pre-operative glenoid deformities to reduce impingement but it can be challenging without assistance like patient specific guides. However, it is unclear how accurate glenoid correction affects the impingement. The main objective of this study was to determine whether accurate glenoid correction to neutral version and tilt can reduce the risk of impingement. Two types of virtual surgeries were performed on 22 pre-operative arthritic shoulders: i)'Interactive', the glenoid baseplate could be placed with accuracy, and ii)'Blind', surgeons placed the RSA baseplate while they could only visualize the glenoid...
September 12, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28894829/the-effect-of-n-acetyl-cysteine-on-recovery-of-the-facial-nerve-after-crush-injury
#12
Andrew Rivera, Mallory Raymond, Ariel Grobman, Marianne Abouyared, Simon I Angeli
OBJECTIVE: Facial nerve dysfunction can vary in severity and recovery is dependent on the character of the injury. N-acetyl-cysteine prevents oxidative stress and cellular damage, and its use in the setting of nerve dysfunction from crush injury has not yet been established. In this study, rats with facial nerve crush injury will be treated with n-acetyl-cysteine or control and functional recovery and electrophysiologic outcome will be compared. STUDY DESIGN: Prospective, randomized animal study...
June 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/28892573/bicycling-suppresses-abnormal-beta-synchrony-in-the-parkinsonian-basal-ganglia
#13
Lena Storzer, Markus Butz, Jan Hirschmann, Omid Abbasi, Maciej Gratkowski, Dietmar Saupe, Jan Vesper, Sarang S Dalal, Alfons Schnitzler
OBJECTIVE: Freezing of gait is a poorly understood symptom of Parkinson's disease, and can severely disrupt the locomotion of affected patients. However, bicycling ability remains surprisingly unaffected in most patients suffering from freezing suggesting functional differences in the motor network. The purpose of this study was to characterize and contrast the oscillatory dynamics underlying bicycling and walking in the basal ganglia. METHODS: We present the first local field potential recordings directly comparing bicycling and walking in Parkinson's disease patients with electrodes implanted in the subthalamic nuclei for deep brain stimulation...
September 11, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28892221/a-novel-leadless-miniature-implantable-tibial-nerve-neuromodulation-system-for-the-management-of-overactive-bladder-complaints
#14
John P F A Heesakkers, Guiseppe A Digesu, Jetske van Breda, Philip Van Kerrebroeck, Sohier Elneil
BACKGROUND: Overactive bladder is a chronic condition affecting lower urinary tract function that has a significant negative impact on QoL. OBJECTIVE: Evaluation of the BlueWind implantable tibial nerve system performance and safety in refractory OAB. DESIGN, SETTING, AND PARTICIPANTS INTERVENTION: A 6-month multi-center prospective intervention study. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Objective assessment was done by voiding diary parameters included voids/day, volume voided/day, urgency assessment, leaking episodes/day, pads used/day, leak severity, and clinical success defined as a ≥50% reduction in the number of leaks/day or number of voids/day or number of episodes with degree of urgency >2 or a return to <8 voids/day on a 3 Day diary...
September 11, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28891547/classification-of-alveolar-bone-destruction-patterns-on-maxillary-molars-by-using-cone-beam-computed-tomography
#15
G Ozcan, A E Sekerci
OBJECTIVE: The defective diagnosis of alveolar structures is one of most serious handicaps when assessing available periodontal treatment options for the prevention of tooth loss. The aim of this research was to classify alveolar bone defects in the maxillary molar region which is a challenging area for dental implant applications. To our knowledge, this is the first study of periodontal bone defect prevalence by using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: In this study, the remaining alveolar bone patterns of 669 maxillary molars of 243 patients with periodontal bone loss were investigated on four aspects and the furcation areas of teeth, and then they were classified into six main groups...
August 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28889016/the-effect-of-melatonin-from-slow-release-implants-on-basic-and-tlr-4-mediated-gene-expression-of-inflammatory-cytokines-and-their-receptors-in-the-choroid-plexus-in-ewes
#16
M Kowalewska, A P Herman, A Szczepkowska, J Skipor
The present study concerns the effect of melatonin from slow-release implants on the expression of genes coding interleukin-1β (Il1B), inerleukin-6 (Il6), tumour necrosis factor α (Tnf) and their receptors: IL-1 receptor type I (Il1r1) and type II (Il1r2), IL-6 receptor (Il6r) and signal transducer (Il6st), TNFα receptor type I (Tnfrsf1a) and II (Tnfrsf1b) and retinoid-related orphan receptor α (RorA) and Rev.-erbα in the ovine choroid plexus (CP) under basal and lipopolysaccharide (LPS)-challenged conditions...
September 5, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28886405/emotional-recognition-of-dynamic-facial-expressions-before-and-after-cochlear-implantation-in-adults-with-progressive-deafness
#17
Emmanuèle Ambert-Dahan, Anne-Lise Giraud, Halima Mecheri, Olivier Sterkers, Isabelle Mosnier, Séverine Samson
Visual processing has been extensively explored in deaf subjects in the context of verbal communication, through the assessment of speech reading and sign language abilities. However, little is known about visual emotional processing in adult progressive deafness, and after cochlear implantation. The goal of our study was thus to assess the influence of acquired post-lingual progressive deafness on the recognition of dynamic facial emotions that were selected to express canonical fear, happiness, sadness, and anger...
August 31, 2017: Hearing Research
https://www.readbyqxmd.com/read/28885130/a-comparison-of-relative-proton-stopping-power-measurements-across-patient-size-using-dual-and-single-energy-ct
#18
Gregory Michalak, Vicki Taasti, Bernhard Krauss, Amanda Deisher, Ahmed Halaweish, Cynthia McCollough
PURPOSE: To evaluate the accuracy and precision across phantom size of a dual-energy computed tomography (DECT) technique used to calculate relative proton stopping power (SPR) in tissue-simulating materials and a silicone implant relative to conventional single-energy CT (SECT). MATERIAL AND METHODS: A 32 cm lateral diameter (CIRS model 062M, Norfolk, Virginia) electron density phantom containing inserts which simulated the chemical composition of eight tissues in a solid-water background was scanned using SECT and DECT...
September 8, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28884275/alloy-microstructure-dictates-corrosion-modes-in-tha-modular-junctions
#19
Robin Pourzal, Deborah J Hall, Jonas Ehrich, Stephanie M McCarthy, Mathew T Mathew, Joshua J Jacobs, Robert M Urban
BACKGROUND: Adverse local tissue reactions (ALTRs) triggered by corrosion products from modular taper junctions are a known cause of premature THA failure. CoCrMo devices are of particular concern because cobalt ions and chromium-orthophosphates were shown to be linked to ALTRs, even in metal-on-polyethylene THAs. The most common categories of CoCrMo alloy are cast and wrought alloy, which exhibit fundamental microstructural differences in terms of grain size and hard phases. The impact of implant alloy microstructure on the occurring modes of corrosion and subsequent metal ion release is not well understood...
September 7, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28882950/cytocompatibility-of-direct-laser-interference-patterned-titanium-surfaces-for-implants
#20
Philip Hartjen, Ola Nada, Thiago Gundelwein Silva, Clarissa Precht, Anders Henningsen, Marzellus GROßE Holthaus, Nikolai Gulow, Reinhard E Friedrich, Henning Hanken, Max Heiland, Christoph Zwahr, Ralf Smeets, Ole Jung
In an effort to generate titanium surfaces for implants with improved osseointegration, we used direct laser interference patterning (DLIP) to modify the surface of pure titanium grade 4 of four different structures. We assessed in vitro cytoxicity and cell attachment, as well as the viability and proliferation of cells cultured directly on the surfaces. Attachment of the cells to the modified surfaces was comparably good compared to that of cells on grit-blasted and acid-etched reference titanium surfaces...
September 2017: In Vivo
keyword
keyword
59909
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"