Your orthodontist will create an impression of the teeth and soft tissue to make the braces. An impression is essentially a cast of your teeth that helps orthodontists study the relationship between the teeth and jaw.
Your child will need to adequately clean their teeth before getting braces so that they properly attach to the teeth, so be sure to visit a dental professional before the big day. And of course, they'll need to brush and floss before the appointment. Otherwise, your orthodontist will have to clean their teeth with a polishing paste before affixing the braces.
The actual procedure should take about 90-120 minutes. A retractor will be placed in the mouth to keep it as dry as possible while the brackets will be placed on each tooth with a special adhesive. After all the brackets are on, the wire will be threaded through them. The wire will most likely be held to the tooth with the help of tiny rubber bands.