Ju´ lio A. Gurgel
;Ce´lia R. M. Pinzan-Vercelino
; John M. Powers
Objective: To evaluate the drive-deflection conduct of six beta-titanium wires using a 3-level
bending take a look at.
Materials and Methods: The wires timolium (TIM), titanium molybdenum (ORG), beta titanium
(BETA), resolve (RES), titanium molybdenum alloy (TMA), and TMA low friction (TMAL) were
tailored into two stainless steel brackets, with no angulation or torque. Both brackets were bonded
to an acrylic jig with a 10-mm interbracket distance. A testing machine (Instron) applied deflections
of 0.2 to 2.0 mm. Force-deflection diagrams were decided from a passive position to an
activation of 2 mm after which throughout deactivation. Forces of activation and deactivation at a
deflection of 1 mm were in contrast by evaluation of variance.
Results: Results demonstrated that vital variations (P,. If you cherished this write-up and you would like to get more information about titanium tubing for sale kindly pay a visit to our webpage. 05) in pressure were noticed
among wires. During activation, forces for the wires had been ranked from lowest to highest as
TMAL5TMA5RES,ORG5BETA,TIM. During deactivation, forces for the wires had been ranked
from lowest to highest as TIM,ORG5BETA,RES5TMA,TMAL. The wires exhibited similar
Conclusion: This study revealed significant variations in power during activation and deactivation
among the six varieties of beta-titanium wires examined. (Angle Orthod. 2011;81:478-483.)
KEY Words: Beta-titanium orthodontic wires; Orthodontic wires; Titanium molybdenum alloy
Orthodontic wires made from completely different alloys now
provide alternative sequences of wire utilization throughout all
phases of orthodontic remedy. It is now attainable to
match phases of remedy with orthodontic wires
in keeping with the mechanical properties of the wire. On
this foundation, the number of orthodontic wire ought to be
based mostly not solely on the transverse part of the wire,
but additionally on an understanding of the deactivation
traits of the wire required for different phases
of orthodontic treatment.
The beta-titanium (b-Ti) wires are titanium molyb-
denum alloys, introduced for orthodontic use in 1979
by Goldberg and Burstone.
envisioned this alloy for orthodontic use after recog-
nizing such advantages as (1) elastic modulus beneath
stainless steel and close to to nickel-titanium bar (NiTi)
standard alloy, (2) glorious formability, (3) weld-
capacity, and (4) low potential for hypersensitivity.
However, use of b-Ti wire has disadvantages such
as (1) excessive surface roughness, which will increase friction
on the wire-bracket interface during the wire sliding
process, and (2) susceptibility to fracture during
To scale back floor roughness, a nitrogen
ion implantation technique has been used. However,
have questioned the effectiveness of
this process within the reduction of friction.
Initially, b-Ti wires have been used for specific software
in a segmented arch approach for making of retraction
loops. Recently, b-Ti wires have been used in the
building of an intrusion arch
and an uprighting
molar spring. Also, b-Ti wire is useful in cantilevers for
intrusion or extrusion of teeth. All of these functions
make it doable to individualize tooth movement and
still provide a managed force system.
In 1992, Hilgers
described the pendulum equipment
for distal molar motion performed with 0.032-inch
Professor and Chairman, Department of Orthodontics,
School of Dentistry, University Center of Maranha˜o, Sa˜ o Luis,
Professor, Department of Orthodontics, School of Dentistry,
University Center of Maranha˜o, Sa˜ o Luis, Brazil.
Professor, Department of Restorative Dentistry and titanium tubing for sale Bioma-
terials, University of Texas Dental Branch at Houston, Houston,
Accepted: October 2010. Submitted: July 2010.
Published Online: February 7, 2011
G2011 by The EH Angle Education and Research Foundation,
Corresponding creator: Dr Ju´lio A.