OBJECTIVE To measure the difference between the intended torque and the achieved torque by the operator using the spring-style mechanical torque-limiting device (MTLD). MATERIALS AND METHODS Inexperienced and experienced clinicians used one spring-type MTLD to torque two abutment screws of each anterior and posterior implants, which were attached to two digital torque meters through a jaw mod...

BACKGROUND Mechanical torque devices (MTDs) are one of the most commonly recommended devices used to deliver optimal torque to the screw of dental implants. Recently, high variability has been reported about the accuracy of spring-style mechanical torque devices (S-S MTDs). Joint stability and survival rate of fixed implant supported prosthesis depends on the accuracy of these devices. Currentl...

abstract: a continuously variable transmission (cvt) is a transmission which may change step less by way of an infinite variety of effective gear ratios between maximum and minimum values. this contrasts with different mechanical transmissions that solely permit just a few different distinct gear ratios to be selected. continuously variable transmissions (cvts) are mechanical devices that allow...

aAssociate Professor, Department of Clinical Sciences, School of Dental Medicine, University of Nevada Las Vegas. bProfessor, Restorative and Prosthetic Dentistry, College of Dentistry, The Ohio State University, Columbus, Ohio. (J Prosthet Dent 2012;108:401-403) 1 Instrument kit with available inserts, from left to right: 0.050in. hexagon straight (Zimmer part # HX1.25D), 0.048-in. 24 mmL hex ...

We developed a powered ankle-foot orthosis that uses artificial pneumatic muscles to produce active plantar flexor torque. The purpose of this study was to quantify the mechanical performance of the orthosis during human walking. Three subjects walked at a range of speeds wearing ankle-foot orthoses with either one or two artificial muscles working in parallel. The orthosis produced similar tot...