Esthetic Archwires
INDIAN DENTAL ACADEMY
Leader in continuing dental education
www.indiandentalacademy.com
www.indiandenta...
One promising approach towards achieving an esthetic
arch wire with good overall properties involves the
use of composites...
studies designed to examine the mechanical
properties, viscoelastic losses, water
sorption, hydrolytic stability, sliding ...
Of the many fiber reinforced composite
technologies, pultrusion is one, which could tend
itself to the fabrication of arch...
The fiber bundles are pulled through an
extruder simultaneous with the extrusion of a
polymer. The fiber bundle is impregn...
Bundles of continuous fibers are impregnated with
polymeric Resin.
Pulled through a Sizing Die that preforms
Composite and...
 . When the fiber and resin contents are equal,
springback is greater than 95%, so that the energy
applied at wire insert...
 Reformation of a cross-sectional dimension from
round to rectangular and from straight length to
preformed arches is pos...
Properties of Experimental Prototypes
1. Tooth colored.
2. Vary in stiffness from that of most flaccid multistranded wire ...
. 4.Specifics of other characteristics such as formability,
weldability and frictional coefficients are unknown at
this ti...
Goldberg and Burstone fabricated a rectangular fiber
reinforced plastic wire with silane-treated continuous
S-2 glass and ...
OPTIFLEX ARCHWIRE
New Orthodontic archwire designed by M.F. Talass in
1992.
Combines unique mechanical properties with a h...
Silicon Dioxide Core: Provides the force for moving
teeth.
Silicon Resin Middle Layer:
Protects core from moisture and add...
Properties:
Wide range of action.
Ability to apply light continuous forces.
Sharp bends must be avoided since they could
f...
Application:
- Applications are similar to those of coaxial archwires.
Light continuous force& High elasticity
Effective i...
. COATED ARCHWIRES
Coating on archwire material have been introduced to
- Enhance esthetics
- Decrease friction.
These wir...
Teflon coating is applied in two coats by
- Conventional Airspray OR
- Electrostatic techniques.
Natural tooth shades
Avai...
1. Lee White Wire :
Manufacturers – Lee pharmaceuticals.
Epoxy Coated Archwire, tooth colored.
Superior wear resistance an...
3. Orthocosmetic Elastinol
Manufacturer – Masel Orthodontics
v Esthetically coated high performance NiTi superelastic arch...
DISADVANTAGES OF ESTHETIC ARCH WIRE :
Coated white Colored Wires are routinely succumbed
to
- Forces of mastication.
- Enz...
An investigation of the frictional properties of
composite wires against several orthodontic
brackets showed that reinforc...
Recently, a research group at the
University of Hokkaido (Japan) has
developed an archwire with a poly
(methylmethacrlate)...
Clinical Selection
Property Stainless Steel Cobalt-
Chromium-Nickel
(Elgiloy Blue)
-Titanium
(TMA)
Nickel-Titanium
Cost
Fo...
www.indiandentalacademy.com
Thank you
For more details please visit
www.indiandentalacademy.com
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Arch wire4 /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078

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Arch wire4 /certified fixed orthodontic courses by Indian dental academy

  1. 1. Esthetic Archwires INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  2. 2. One promising approach towards achieving an esthetic arch wire with good overall properties involves the use of composites which can be a mixture of ceramic fibers that are embedded in a linear or cross linked polymeric matrix Such an archwire could be made with a tooth-coloured appearance and with stiffness properties similar to metallic archwires. www.indiandentalacademy.com
  3. 3. studies designed to examine the mechanical properties, viscoelastic losses, water sorption, hydrolytic stability, sliding mechanics and post processing formability of composite wires has shown strong support for their clinical viability. There are numerous processes for the fabrication of continuous fiber-reinforced composite parts. In order to maintain careful control during fabrication, many fiber reinforced composite products are produced in two steps. The amount, distribution and wetting of the fibers by the resin are closely controlled in the first step. In second step, the composite is formed into the desired final shape. www.indiandentalacademy.com
  4. 4. Of the many fiber reinforced composite technologies, pultrusion is one, which could tend itself to the fabrication of archwires. Pultrusions with small clinically relevant round or rectangular cross sections potentially could be used for continuous lengths of wires. . This continuous molding process produces long, straight structural members of constant cross- sectional area www.indiandentalacademy.com
  5. 5. The fiber bundles are pulled through an extruder simultaneous with the extrusion of a polymer. The fiber bundle is impregnated by the polymer, producing a continuous length of fiber-reinforced composite With the use of this process of photopultrusion, arch wire prototypes have been constructed with stiffness ranging from that of nickel titanium to that of β-titanium wires. www.indiandentalacademy.com
  6. 6. Bundles of continuous fibers are impregnated with polymeric Resin. Pulled through a Sizing Die that preforms Composite and establishes resin / fiber ratio Passed through Curing Die – imparts precise shape as it cures the resin. www.indiandentalacademy.com
  7. 7.  . When the fiber and resin contents are equal, springback is greater than 95%, so that the energy applied at wire insertion may be retrieved months later without significant loss. At this same fiber-resin content the total water sorption is only 1.5% by weight, so that dimensional stability is good and stains and odours are minimized www.indiandentalacademy.com
  8. 8.  Reformation of a cross-sectional dimension from round to rectangular and from straight length to preformed arches is possible, as well. This procedure is termed β-staging. The surface chemistry can be modified to provide enhanced biocompatibility and low coefficients of sliding friction.  During pultrusion an intervening process in which partially cured resin and its bundles of continuous fibers are deformed into another form (e.g., : Preformed archwire) after which curing is completed www.indiandentalacademy.com
  9. 9. Properties of Experimental Prototypes 1. Tooth colored. 2. Vary in stiffness from that of most flaccid multistranded wire to nearly that of -Ti archwire. These characteristics can be varied during manufacture without any change in wire slot engagement by pultrusion. 3. Mechanical tests show that - Such archwires are elastic until failure occurs. - When failure does occur the wire looses its stiffness but remains intact. When compared with NiTi, resilience and springback are comparable. www.indiandentalacademy.com
  10. 10. . 4.Specifics of other characteristics such as formability, weldability and frictional coefficients are unknown at this time. Low coefficients of friction and enhanced biocompatibility should be possible by modifying surface chemistry of polymer. 5. Like the advanced metal wires, their shape is very difficult to change once the manufacturing process is completed which leads to a number of practical problems for clinical applications. www.indiandentalacademy.com
  11. 11. Goldberg and Burstone fabricated a rectangular fiber reinforced plastic wire with silane-treated continuous S-2 glass and 2 kinds of thermoplastic polymers, polyethylene terephthalate glycol (PETG) and poly 1,4-cyclohexylene dimethylene terephthalate glycol (PCTG). Kusy and his colleagues have developed an archwire containing S2 glass fibers (Owens Corning, Toledo, OH, USA) embedded in a polymeric matrix formed from BIS-GMA and TEGDMA; benzoin ethyl ether is present as a uv (ultraviolet) photo initiator. By adjusting the ceramic/polymer proportions, these wires can be manufactured in a wide range of clinically relevant levels of elastic stiffness, using the technique of photo-pultrusion with ultraviolet light illumination to cure the polymer matrix www.indiandentalacademy.com
  12. 12. OPTIFLEX ARCHWIRE New Orthodontic archwire designed by M.F. Talass in 1992. Combines unique mechanical properties with a highly esthetic appearance. I. Structure of Optiflex Archwire Made of clear optical fiber comprises of three layers A – Silicon Dioxide Core B – Silicon Resin Middle Layer C – Nylon Outer Layer www.indiandentalacademy.com
  13. 13. Silicon Dioxide Core: Provides the force for moving teeth. Silicon Resin Middle Layer: Protects core from moisture and adds strength. Nylon Outer Layer : Stain resistant. Prevents damage to wire and further increased strength. www.indiandentalacademy.com
  14. 14. Properties: Wide range of action. Ability to apply light continuous forces. Sharp bends must be avoided since they could fracture the core otherwise optiflex has practically no deformation. Talass reported orthodontic cases that were treated with his wire. www.indiandentalacademy.com
  15. 15. Application: - Applications are similar to those of coaxial archwires. Light continuous force& High elasticity Effective in alignment of crowded teeth AVAILABILITY: Ormco Corporation: Optiflex Sizes – 0.017” and 0.021” www.indiandentalacademy.com
  16. 16. . COATED ARCHWIRES Coating on archwire material have been introduced to - Enhance esthetics - Decrease friction. These wires are designed to be esthetically more acceptable by the patient. They are given a plastic tooth colored coating so that it can blend with the tooth color and also of ceramic brackets. Normally the coating is 0.002” thick. The coating frequently used is TEFLON. www.indiandentalacademy.com
  17. 17. Teflon coating is applied in two coats by - Conventional Airspray OR - Electrostatic techniques. Natural tooth shades Available in Colors – Blue, Green, Purple. www.indiandentalacademy.com
  18. 18. 1. Lee White Wire : Manufacturers – Lee pharmaceuticals. Epoxy Coated Archwire, tooth colored. Superior wear resistance and color stability of 6-8 weeks. Nickel titanium Preformed arches Stainless steel 2. Filaflex Manufacturer – American Orthodontics High tensile stainless steel core Durable tooth colored plastic coating. www.indiandentalacademy.com
  19. 19. 3. Orthocosmetic Elastinol Manufacturer – Masel Orthodontics v Esthetically coated high performance NiTi superelastic archwire. v Esthetic coating – Blends exceptionally well with ceramic or plastic brackets. v Doesn’t stain or discolor and resists cracking or chipping. 4. Nitanium Tooth Toned Archwire: Manufacturer : Ortho Organizers Superelastic Ni-Ti wire with special plastic and friction reducing tooth colored coatings. Blend with Natural dentition, Ceramic, Plastic and composite brackets. Maintains its original color. Delivers gentle constant force. Round – 0.014”, 0.016”, 0.018” Sizes Rectangular – 0.016” x 0.022” 0.018” x 0.025” www.indiandentalacademy.com
  20. 20. DISADVANTAGES OF ESTHETIC ARCH WIRE : Coated white Colored Wires are routinely succumbed to - Forces of mastication. - Enzyme activity of oral cavity. Uncoated Transparent Wires: Poor mechanical properties that they function merely as placebo. www.indiandentalacademy.com
  21. 21. An investigation of the frictional properties of composite wires against several orthodontic brackets showed that reinforcement fibers were abrasively worn from the wire surfaces when tests were conducted at normal forces or angulations This potential release of glass fibers within the oral cavity was considered unacceptable, and a polymeric surface coating was suggested as a potential remedy. www.indiandentalacademy.com
  22. 22. Recently, a research group at the University of Hokkaido (Japan) has developed an archwire with a poly (methylmethacrlate) matrix reinforced by CaO-P2O5-SiO2-Al2O3 fibers that are reported to be biocompatible. www.indiandentalacademy.com
  23. 23. Clinical Selection Property Stainless Steel Cobalt- Chromium-Nickel (Elgiloy Blue) -Titanium (TMA) Nickel-Titanium Cost Force delivery Elastic range (springback) Formability Ease of joining Archwire- bracket friction Concern about biocompatibilit y Low High Low Excellent Can be soldered. Welded joint m ust be reinforced with solder. Lower Some Low High Low Excellent Can be soldered. Welded joints must be reinforced with solder. Lower Some High Intermediate Intermediate Excellent Only wire alloy that has true weldability Higher None High Light High Poor Cannot be soldered or welded Higher Some www.indiandentalacademy.com
  24. 24. www.indiandentalacademy.com Thank you For more details please visit www.indiandentalacademy.com

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