background: the advantages of coated orthodontic wires such as esthetic and their effectson reduced friction, corrosion and allergic reaction and the signifi cant consequences of plaque accumulation on oral health encouraged us to assess bacterial colonization on these wires. materials and methods: a total of 18 (9 upper and 9 lower) epoxy resin coated 16 × 22 nickeltitanium wires (spectra, gac...

The majority of smart field devices installed worldwide today are HART-enabled. The HART (Highway Addressable Remote Transducer) Protocol is the global standard for sending and receiving digital information across analog wires between smart devices and control or monitoring system. It is a bi-directional communication protocol that provides data access between intelligent field instruments and ...

The current power grid is facing many challenges that it was not designed or engineered to handle which range from congestions and major blackouts to the overwhelming increase in demand and security concerns. The current electric grid was established before the 1960’s. It is believed that the electric grid is the most complex and gigantic machine ever made in human history; it consists of wires...

Assist. prof. dr. Daniela Maffiodo, prof. dr. Terenziano Raparelli, prof. dr. Guido Belforte; all: Dipartimento di Meccanica, Politecnico di Torino, Italy Abstract: Due to the complex thermomechanical characteristics of Shape Memory Alloy wires, it is important to develop control systems in order to design new applications for these smart materials. This paper presents three SMA wire position c...

This case illustrates the importance of a thorough clinical history and the benefit of histopathologic examination. The history of contact allergy to jewelry provided an early clue, and the microscopic features confirmed the clinical impression of allergic stomatitis.

Rehabilitation of a highly resorbed mandibular ridge can be a difficult and challenging one. Making an impression with available stock trays, even after modification is difficult in case of extremely resorbed ridges. In such cases, an innovative technique of making impression with properly adapted wire and silicone putty can be used to make a proper impression to achieve maximum retention and s...

OBJECTIVE This study aimed to compare the frictional force (FR) in self-ligating brackets among different bracket-archwire angles, bracket materials, and archwire types. METHODS Passive and active metal self-ligating brackets and active ceramic self-ligating brackets were included as experimental groups, while conventional twin metal brackets served as a control group. All brackets were maxil...

The field of smart materials and structures has evolved in the last 10 years to the point of viability for commercial mass-production industries. A good example of this is the automotive industry where there has been a 600% increase in patent applications. While the fundamental science is present for many smart materials such as shape memory alloys or piezoelectrics, there have been only a few ...

background: friction is usually encountered during sliding technique for orthodontic space closure. this study aims to investigate the effect of fluoride on frictional resistance between stainless steel orthodontic brackets and steel and niti arch wires. materials and methods: a total of 144 standard 022 stainless steel brackets were used in this experimental study. 0.016 and 0.019 × 0.025 inch...