SUMMARY Statement of the Problem : Full-coverage all-ceramic restorations are widely used. The impact of various classifications of luting agent on marginal discrepancies is not well understood. Purpose : The purpose of this study was to evaluate the cervical fit of all ceramic crowns (IPS e.maxPress, Cergogold, and In Ceram) ...

platelet derived growth factor (PDGF) was formulated in a calcium phosphate/biodegradable polymer system for local and controlled delivery to enhance bone regeneration. Implants with a porosity of 67 %, composed of hydroxyapatite, PLGA microspheres and Pluronic(®), were obtained by compression. An increase in porosity with time was expected due to Pluronic(®) ...

The new C3 Gore Excluder delivery system enables both up/downward and rotational repositioning of the device before complete deployment. This contributes to more precise proximal landing and permits facilitation of the contralateral gate cannulation. During separate deployment, the position of the ipsilateral limb can also be readjusted. We have used ...

Dental implants may alter the mechanical environment in the jawbone, thereby causing remodelling and adaptation of the surrounding trabecular bone tissues. To improve the efficacy of dental implant systems, it is necessary to consider the effect of bone remodelling on the performance of the prosthetic systems. In this study, finite ...

Purpose: The aim of this randomized controlled clinical trial was to compare the outcomes of zirconia crowns and fixed partial dentures (FPDs) supported by teeth or implants. Materials and Methods: Patients were recruited based on inclusion/exclusion criteria, and 59 eligible subjects were assigned randomly to treatment by one of four ...

The aim of this research was to evaluate internal and marginal adaptation of lithium disilicate partial crowns fabricated using IPS e.max Press and IPS e.max CAD systems. Forty maxillary first molars were divided into two groups. The margins were located above the cementoenamel junction mesially and below it distally. The ...

Purpose: Two different stereolithographic surgical guide systems, NobelGuide (Nobel Biocare) and SimPlant (Materialise), were compared clinically, and the survival rates of the planned immediately loaded dental implants with prefabricated provisional restorations were evaluated. Materials and Methods: Patients were treated with implants using either the Materialise SimPlant system or the Nobel ...

ABSTRACT: BACKGROUND: Modern cochlear implants have integrated recording systems for measuring electrically evoked compound action potentials of the auditory nerve. The characterization of such recording systems is important for establishing a reliable basis for the interpretation of signals acquired in vivo. In this study we investigated the characteristics of the ...

To evaluate the efficacy of ProTaper Universal rotary retreatment system and the influence of sealer type on the presence of filling debris in the reinstrumented canals viewed in an operative clinical microscope. Forty-five palatal root canals of first molars were filled with gutta-percha and one of the following sealers: G1, ...

Background and purpose Rehabilitation of patients with transfemoral amputations is particularly difficult due to problems in using standard socket prostheses. We wanted to assess long-term fixation of the osseointegrated implant system (OPRA) using radiostereometric analysis (RSA) and periprosthetic bone remodeling. Methods 51 patients with transfemoral amputations (55 implants) were enrolled ...

The purpose of this in vitro study was to assess the amount of apically extruded debris using rotary and reciprocating nickel-titanium instrumentation systems. Eighty human mandibular central incisors were randomly assigned to 4 groups (n = 20 teeth per group). The root canals were instrumented according to the manufacturers' instructions using ...

OBJECTIVES: The aim of the study was to evaluate the technical feasibility and performance of a transcatheter mitral annuloplasty system. METHODS: Adult swines (n = 15) underwent left thoracotomy through the 4th-5th intercostal space. A transcatheter device (CardioBand, Valtech-Cardio Ltd) was introduced through an 18F sheath through the left atrium and attached ...

The performance of cochlear implants deteriorates in noisy environments compared to quiet conditions. This paper presents an adaptive cochlear implant system which is capable of classifying the background noise environment in real-time for the purpose of adjusting or tuning its noise suppression algorithm to that environment. The tuning is done ...

The bone-conduction implant (BCI) can use a higher gain setting without having feedback problems compared with a percutaneous bone-conduction device (PBCD). The conventional PBCD, today, is a common treatment for patients with conductive hearing loss and single-sided deafness. However, there are minor drawbacks reported related to the percutaneous implant and ...

Aims of the study: Transcatheter aortic valve implantation (TAVI) has become an established treatment for severe aortic stenosis in patients with unacceptable high-surgical risk. Recently, the new AccuTrak delivery system for improved deliverability of the CoreValve aortic bioprosthesis was launched. It has not yet been shown if the new delivery ...

The objective of this in vitro study was to evaluate the surface roughness and micro-hardness of three novel resin composites containing nanoparticles after polishing with one-step and conventional multi-step polishing systems. A total of 126 specimens (10 X 2 mm) were prepared in a metal mold using three nano-composites (Filtek ...

This study aimed in evaluating the effects of two experimental resin bonding systems containing conventional Bioglass 45S5 (BAG) or Zinc-polycarboxylated bioactive glass (BAG-Zn) micro-fillers on the resin-bonded dentine interface after storage in a simulated body fluid solution (SBFS). Three resin bonding systems were formulated: Resin-A: (BAG containing); Resin-B; (BAG-Zn containing); ...

The purpose of this study is to evaluate the resin-dentin interface, quality of the hybrid layer of total-etching and self-etching adhesive systems under scanning electron microscopy (SEM). Class V cavities were prepared in 40 extracted human molars. In Group I XP bond (Dentsply), in Group II Adper Single Bond II ...

The aim of the present study was to evaluate the fracture resistance of teeth restored with resin composite. Forty-eight maxillary premolar teeth were chosen and randomly divided to six groups: G1 (control): sound teeth; G2: MOD preparation, unrestored; G3: MOD + Adper Single Bond 2/P60; G4: MOD + Adper Easy ...

The recent introduction of subcutaneous implantable cardioverter defibrillator (S-ICD) has raised attention about the potential of this technology for clinical use in daily clinical practice. We review the methods and results of the four studies conducted in humans for approval of this innovative technology for daily practice. Two studies using ...

Abstract Objective. This study aimed to evaluate the push-out bond strength of dimethacrylate (Clearfil SE Bond/Filtek Z250; and Adper SE Plus/Filtek Z250) and silorane-based (Filtek P90 adhesive system/Filtek P90 composite resin) restorative systems following selective dentin pre-treatment with a CPP-ACP-containing paste (MI Paste). Materials and methods. Sixty bovine incisors were ...

PURPOSE: The current study evaluated the effect of remote system and acoustic environment on speech perception via telehealth with cochlear implant recipients. METHOD: Speech perception was measured in quiet and in noise. Systems evaluated were: Polycom visual concert (PVC) and a hybrid presentation system (HPS). Each system was evaluated in ...

PURPOSE: To gain insight into a new technology, a novel facet arthroplasty device (TFAS) was compared to a rigid posterior fixation system (UCR). The axial and bending loads through the implants and at the bone-implant interfaces were evaluated using an ex vivo biomechanical study and matched finite element analysis. Kinematic ...

The objective of this study was to evaluate the influence of resin-based restorations on the interpretation of digital and conventional radiographic images and to correlate the proposed diagnosis with decision-making. Class II cavities were prepared in one of the proximal surfaces of extracted human molars. Teeth were divided into five ...

Purpose: The aim of the present study was to verify the presence of a microgap between implants and prosthetic abutments on their external surfaces in five different external-hex implant systems and to determine whether bacterial leakage occurs through the implant-abutment (I-A) interface. Materials and Methods: Ten samples of each implant ...

Introduction and Objectives: The mini sling concept for stress urinary incontinence is an anatomical approach that involves placing a midurethral low-tension tape anchored to the obturator internus muscles bilaterally. They overcome the blind passage of long needles and all the related complications. There are many different devices available and because ...

The purpose of this study was to present the orthodontic treatment of a unilateral transposition of a permanent mandibular left canine and permanent mandibular lateral incisor during middle transitional dentition in a 10-year-old female. A panoramic radiograph showed the apex of the permanent mandibular left lateral incisor to be resting ...

Background: Leads in and on the heart of the transvenous implantable cardioverter defibrillator (ICD) form the Achilles' heel of this system due to potential for peri- and postimplant complications. The S-ICD is a newer generation of the ICD that does not require leads on the heart or in the vasculature. ...

The immediate complication after implantation of mechanical circulatory support (MCS) is more often bleeding than thromboembolic events. We report an unsual case of massive thrombus formation following systemic thrombolytic therapy which happened twice after implantation of MCS. Various mechanisms may contribute to this severe complication, but attention should be paid ...

The Stryker RevolutionTM is a new mixing system that employs a high vacuum and a motorised mixing spatula in an effort to reduce cement porosity. We have compared RevolutionTM with Depuy Cemvac®, in terms of system reliability and cement porosity. Standardised Simplex P® and SmartSet® HV cement samples were produced ...

Over the past 30 years joint replacement prostheses have been developed and refined to enhance durability and reproducibility. Total hip joint arthroplasty is being performed in an increasing number of younger patients; therefore orthopaedic surgeons seek implants with a longer life span. With regards to the progress of mechanical behaviour of ...

SUMMARY One of the challenges in durability of posterior tooth-colored restorative materials is polymerization shrinkage, which results in gap formation between the restoration and tooth structure. The aim of the present study was to investigate marginal adaptation of Class II composite restorations using a self-etching and two etch-and-rinse adhesive systems ...

SUMMARY Objectives : The aim of this study was to compare the one-year clinical performance of three restorative systems, which included a novel low-shrinkage composite and two bonding strategies. Materials and Methods : Twenty-five patients received three Class I (occlusal) or Class II restorations performed with one of three restorative ...

AimsIn paediatric patients with a pacemaker (PM) or an implantable cardioverter defibrillator (ICD) device, interrogation during in-clinic visits is usually required to obtain information on arrhythmias or system failures. An automated telemonitoring system tracking patient- and system-related parameters provides this information on a daily basis and might assist patient management.Methods ...

The aim of this study was to evaluate the ability of Resilon (Resilon Research, LLC, North Branford, CT) and 2 types of gutta-percha to fill simulated lateral canals when using the Obtura II system (Model 823-700; Obtura Spartan, Fenton, MO). Forty-five human single-rooted teeth were selected and subjected to root ...

As cochlear implant technology has changed, so have implantation criteria. In addition to profoundly deaf individuals, candidacy has expanded to include those with significant remaining acoustic hearing. This article describes the devices that are now in clinical trial, discusses the rationale as to why residual hearing preservation is important, details ...

Introduction: Fluoroscopy-guided pacing lead placement has well-recognized limitations and risks. We studied the safety and feasibility of using a novel electromagnetic navigation system specifically designed to guide pacemaker and implantable cardioverter defibrillator lead placement. Methods: Twenty-four patients (mean age of 54 ± 34 years) underwent the study protocol; 16 before ...

The aim of this study was to evaluate the efficacy of three rotary instrument systems (K3, ProTaper and Twisted File) in removing calcium hydroxide residues from root canal walls. Thirty-four human mandibular incisors were instrumented with the ProTaper System up to the F2 instrument, irrigated with 2.5% NaOCl followed by ...

Instability after primary and revision total hip arthroplasty continues to be a problem. The use of a constrained system helps manage this problem. A new constrained total hip arthroplasty, Trilogy constrained liner (Zimmer, Warsaw, IN), is currently in use. We report a case showing dislocation following a Trilogy constrained total ...

Suburethral slings as well as different meshes are widely used treating stress urinary incontinence and prolaps in women. With the development of MiniSlings and special meshes using less alloplastic material anchorage systems become more important to keep devices in place and to put some tension especially on the MiniSlings. To ...

de Gregorio C, Paranjpe A, Garcia A, Navarrete N, Estevez R, Esplugues EO, Cohenca N. Efficacy of irrigation systems on penetration of sodium hypochlorite to working length and to simulated uninstrumented areas in oval shaped root canals. International Endodontic Journal. ABSTRACT: Aim  To assess the ability of sodium hypochlorite (NaOCl) ...

Chronically implantable, closed-loop neuromodulation devices with concurrent sensing and stimulation hold promise for better understanding the nervous system and improving therapies for neurological disease. Concurrent sensing and stimulation are needed to maximize usable neural data, minimize time delays for closed-loop actuation, and investigate the instantaneous response to stimulation. Current systems ...

In cases of failed root canal treatment, endodontic retreatment of the root canal system is necessary. The present study aimed to assess variation in the incidence and depth of residual filling material in dentinal tubules after gutta-percha removal with H-files, the ProTaper Universal System (Dentsply Maillefer, Ballaigues, Switzerland), and the SybronEndo ...

Hard-tissue debris is accumulated during rotary instrumentation. This study investigated to what extent a calcium-complexing agent that has good short-term compatibility with sodium hypochlorite (NaOCl) could reduce debris accumulation when applied in an all-in-one irrigant during root canal instrumentation. Sixty extracted mandibular molars with isthmuses in the mesial root canal ...

Summary  The purpose of this controlled study was to determine the impact of a single-tooth implant, fixed implant prosthesis and completely removable dental prosthesis on intelligibility, articulation and oromyofunctional behaviour. Additionally, the self-perceived overall satisfaction of the dental replacements and the effect on speech was questioned. Objective (acoustic analysis) as ...

PURPOSE: The goal of this study was to compare clinical and research-based cochlear-implant (CI) measures using telehealth versus traditional methods. METHOD: This prospective study used an ABA design (A: laboratory, B: remote site). All measures were made twice per visit to assess within-session variability. Twenty nine adult and pediatric CI ...

To compare the speech understanding abilities of cochlear implant listeners using 2 microphone technologies, the Otologics fully implantable Carina and the Cochlear Freedom microphones. Feasibility study using direct comparison of the 2 microphones, nonrandomized and nonblinded within case studies. Tertiary referral center hospital outpatient clinic. Four subjects with greater than ...

Hearing Preservation is becoming increasingly important in cochlear implantation as there is growing evidence that preserving the residual hearing, especially in the low frequencies in combination with the electric stimulation can significantly improve hearing and speech outcomes in noise. Besides the ongoing development of atraumatic implant electrodes and insertion techniques, ...

Purpose: To evaluate the accuracy of a newly developed open-source system for three-dimensional dental implant planning and fully guided dental implant placement. Materials and Methods: Forty-eight implant positions were planned for eight partially edentulous anatomical patient equivalent models with an opensource implant planning system on the basis of cone beam ...

This article aims to describe step-by-step the implementation of an ergonomics administration system in a company from March 2009 till March 2011 by an occupational therapist specialist in ergonomics based on the OSHAS 18001 guidelines and the Regulatory Norms 17 manual. The process began with the definition of five requisites ...