How does Orthodontist move teeth?
If one needs to move a chair from one position to the other, he/she needs to get a proper grip on it. Likewise, to move teeth, the Orthodontist needs to get a hold of it! So how does he/she get a hold of the tooth?!
Earlier, when technology was not as advanced as it is now, orthodontists used to put metal bands around each & every tooth on which an attachment was put through which a wire was passed. The wires were shaped and contoured as per the need to move the teeth from one position to the other.
With the advent of technology, the metal bands are restricted to a few teeth only & the attachment can now be directly stuck on the tooth with the help of special dental adhesives. The wire still remains a major force in making the teeth move into the most correct position.
To give an analogy, if the teeth are compartments of the train, the wire not only provides the track on which the compartments are moved, it is also the main engine which moves the teeth, very much like the MagLev Trains. Quite often during the course of treatment, secondary engines, in the form of elastics & springs, are used, as well to deliver the best results.