BACKGROUND Mechanical torque limiting devices (MTLDs) are necessary tools to control a peak torque and achieving target values of screw component of dental implants. Due to probable effect of autoclaving and number of use on the accuracy of these devices, this study aimed to evaluate the effect of sterilization and number of use on the accuracy of friction-style mechanical torque limiting devic...

BACKGROUND The objective of this study is to analyse the effectiveness of the surgical torque limiter during operative use. The study also investigates the potential differences in torque between hand and drill-based screw insertion into locking plates using a standardised torque limiter. METHODS Torque for both hand and power screw insertion was measured through a load cell, registering 6.66...

normal 0 false false false en-us x-none fa microsoftinternetexplorer4 background : strength improvement of the shoulder muscles is a major goal in rehabilitation or athletic conditioning programs. the purpose of this study was to determine the effect of shoulder core exercises on the isometric torque of glenohumeral joint movements. methods : a total of 36 healthy females with no history of sho...

Trunk muscle weakness and imbalance are risk factors for postural instability, low back pain, and poor postoperative outcomes. The association between trunk muscle strength and aging is poorly understood, and establishing normal reference values is difficult. We aimed to establish the validity of a novel portable trunk muscle torque measurement instrument (PTMI). We then estimated reference dat...

Introduction: Some clinicians use a handheld screw driver instead of a torque wrench to definitively tighten abutment screws. The aim of this study was to compare the removal torque of one-piece and two-piece abutments tightened with a handheld driver and a torque control ratchet. Methods: 40 ITI implants were placed in acrylic blocks and divided into 4 groups. In groups one and two, 10 ITI one...

Cogging torque is the major limitation of axial flux permanent magnet motors. The reduction of cogging torque during the design process is highly desirable to enhance the overall performance of axial flux permanent magnet motors. This paper presents a double-layer magnet design technique for cogging torque reduction of axial flux permanent magnet motor. Initially, 250 W, 150 rpm axial flux brus...

− This paper presents a set of results regarding the torque of travelling wave ultrasonic motor. It is known the fact that at this type of motor there are a set of phenomena which requires some advanced investigations. The analysis of torque characteristics requires precision measure methods, torquemeters or dinamometers. The torque dependence and influence of specifical parameters are presente...