AIM To compare ex vivo the performance of the Apex Finder and the Root ZX apex locators, with and without irrigant, in canals having different diameters. METHODOLOGY Sixty canals in 60 teeth were prepared using stainless steel hand files and 0.04 taper NiTi rotary instruments. During preparation the narrowest diameter of the canal was transported to the apical root surface. The canals were ir...

Purpose: To investigate whether helical blade implant systems have advantages in terms of tip apex distance (TAD) and cut-out rate in comparison to conventional lag screws for intertrochanteric fractures in a geriatric population. Methods: Relevant articles were sourced from the MEDLINE, Embase, Ovid and Cochrane Library databases from inception through March 2015. All randomized controlled tri...

Abstract Aim Dynamic hip screws (DHS) and intramedullary nail (IMN) fixations have been successful in treating extracapsular fractures. Tip to apex distance (TAD) is defined as the total sum of from tip lag screw femoral head on both AP lateral radiographs. Baumgartner et al. TAD<25 mm be predictive a result, with reduced rates metalwork failure. Therefore, this study aims assess if TAD ...

In this study, a new approach for simulation of electric field enhancement ofplane wave laser around optical antenna was used to convert free-propagating opticalradiation to localized energy. A tapered gold tip design as a novel geometry of opticalantenna is introduced and numerically analyzed based on particle swarm optimization(PSO) by solving the Maxwell equations wit...

In this work, we present non-contact atomic force microscopy (nc-AFM) and Kelvin probe force microscopy (KPFM) simulations of the (001) surface of silver and supported MgO thin films. From the calculated force spectroscopy, we predict atomic resolution at tip-surface distances of less than 5 Å. For KPFM, we study the influence of charges localized on either the tip or on the surface on the Kelv...

We present the first accurate damping profiles acquired in atomic-resolution hydration force spectroscopy, revealing a monotonic damping profile at the nanoscopic tip apex. Atomic resolution is confirmed by the observed inhomogeneity caused by random substitution of Si by Al on the mica surface, and two distinct damping regimes are identified. Damping only appears above our detection limit of 1...

Objective: To evaluate the importance of tip apex distance in implant failure intertrochanteric fracture femur treated with Dynamic hip screw, so that optimum should maintain to decrease DHS. Study Design: It was a descriptive cross sectional study. Setting and Duration: Patients were selected from orthopedic unit Nishtar Hospital, Multan, July 2020 June 2021. Methodology: All patients meeting ...