OBJECTIVE To quantify the three-dimensional moments and forces produced by pretorqued nickel-titanium (NiTi) rectangular archwires fully engaged in 0.018- and 0.022-inch slots of central incisor and molar edgewise and prescription brackets. MATERIALS AND METHODS Ten identical acrylic dental models with retroclined maxillary incisors were fabricated for bonding with various bracket-wire combin...

OBJECTIVE The purpose of this study was to evaluate the surface roughness (SR) of 2 types of orthodontic archwires made by 4 different manufacturers. METHODS This in vitro experimental study was conducted on 35 specimens of 7 different orthodontic archwires, namely, 1 nickel-titanium (NiTi) archwire each from the manufacturers American Orthodontics, OrthoTechnology, All-Star Orthodontics, and...

BACKGROUND Although the modified tension band technique (eg, tension band supplemented by longitudinal Kirschner wires) has long been the mainstay for fixation of transverse fractures of the patella, it has shortcomings, such as bad reduction, loosening of implants, and skin irritation. QUESTIONS/PURPOSES We conducted a retrospective comparison of the modified tension band technique and the t...

Introduction: During sliding mechanics, frictional resistance is an important counterforce to orthodontic tooth movement; which must be controlled to allow application of light continuous forces. objective: To investigate static and kinetic frictional resistance between three orthodontic brackets: ceramic, self-ligating, and stainless steel, and three 0.019×0.025” archwires: stainless steel, ni...

AIM The purpose of this investigation was to determine the kinetic frictional resistance offered by stainless steel and Titanium bracket used in combination with rectangular stainless steel wire during in vitro translatory displacement of brackets. MATERIALS AND METHODS In this study. Brackets: (All brackets used had a torque of - 7° and an angulation of 0°): (1) Dynalock (Unitek) 0.018'' slo...

Sir, Mechanical irritation interdental loop wiring and intermaxillary fixation causes inflammation of oral mucosa, marginal gingiva and lips is virtually unavoidable in maxillofacial surgery.[1] Filippi et al. compared different types of splints (composite wire splinting, button bracket splinting, resine splinting and titanium trauma splinting) by means of irritation on gingival mucosa and lips...

VOLUME LI NUMBER 3 © 2017 JCO, Inc. Orthodontists can never have enough techniques in their armamentaria for uprighting mesioangular lower second molars. In this Pearl, as an alternative to a Halterman appliance, the authors use a beta titanium U-loop extended distally from the first-molar band to upright an impacted second molar. Note the crimpable stops on the U-loop to prevent the wire from ...

BACKGROUND Metal alloys utilized in the management of jaw fractures may exert genotoxic effects. Our purpose was to compare the genotoxicity of intermaxillary fixation devices containing nickel and chromium to that of titanium miniplates utilized in treatment of jaw fractures through the analysis of sister chromatid exchange. METHODS In this prospective study, in a total of 28 non-smoker pati...

This paper reports a study into the regularities of interphase interaction, features in formation intermetallic phases (IMPs), and defects when surfacing steel on titanium four ways: P-MAG, CMT, plasma by an indirect arc with conductive wire, PAW. A general tendency has been established IMP occurrence all considered methods. It was determined that technique involving wire is less critical as re...

Superhydrophobic and oleophobic surfaces have attracted increasing attention because of their self-cleaning properties. A composite coating composed anodized titanium sol-gel (TiAO/SG) was developed has good superhydrophobic property. The prepared on the substrate then a layer coated surface to obtain with adhesion weight glycerol wire decreased 4.8% that untreated wire, which showed material h...