Optical Fibers as Orthodontic Archwires : Optiflex

The purpose of this article is to introduce Optiflex(TM), the first non-metal archwire in orthodontics. This clear archwire is comprised of three layers: a silicone dioxide core, a silicon resin middle layer and a stain-resistant nylon outer layer. It is available in two sizes: 0.017" and 0.021". Optiflex was compared to three other flexible archwires (Niti, Respond and Nitinol) by means of tensile, bending and time-dependent effects tests. The results showed that : 1. The tensile strength of Optiflex was significantly lower than that of metal archwires. 2. The force delivered by Optiflex was much lighter and more constant than those delivered by other archwires. 3. The force of Optiflex was less than half the force delivered by at "Respond" archwire of similar size. 4. Time-dependent effects of Optiflex were almost identical to those of nickel-titanium. These mechanical advantages, along with its esthetic properties and stain resistance, make Optiflex a unique addition to orthodontic archwires currently available. The new archwire is highly effective in the alignment of crowding in most orthodontic cases, particularly adults with special esthetic considerations.