This can happen more frequently during the initial stages of treatment, when I use very flexible, gentle wires to start the movement, or it can also happen when there is a larger than normal span between the braces, even when the wire is relatively stiff. The video shows how to replace a wire that is made out of a flexible material. You can tell that it is the flexible material because when you bend slightly it and let go, it returns to being flat. If you bend it slightly and that bend stays in the wire when you let go, it is made of a stiffer material, and you will not be able to bend it into a "U" shape like the video shows.
If the wire is made out of a stiff material:
Below are links to movies showing you how to replace a wire that came out in the back. Both movies are in Quicktime format, and require the free Quicktime plug-in from Apple to view them. If you have a Mac, this comes installed on your computer. If you have a PC and you have not previously downloaded it, you can download it here. Once the movie loads, you can click the "Play" triangle at the bottom left of the movie to play (and replay) it. There is no sound associated with the move.
Large Movie For Macs and PCs with Quicktime installed and a broadband connection (Cable, DSL or faster). 19MB. (this may take 2 minutes or so to download, depending on the speed of your connection. If the movie doesn't play all the way after the page loads, be patient. The movie will be able to play all the way through after it fully downloads - when the progress bar in the controller below the movie is fully filled in). PC users may need to click on the black square where the movie should be in order to display the movie and controls.
Small Movie Quicktime For Macs and PCs with Quicktime installed and dial-up internet access. Half the dimensions of the Large Movie. 1.1MB. PC users may need to click on the black square where the movie should be in order to display the movie and controls.