One of the goals of orthodontic treatment is to correct dental misalignments and align teeth to improve their appearance and function. Conventional fixed orthodontic appliances, commonly known as braces, are the best known and are still considered to be the most effective and versatile for most cases. Braces are small boxes (or brackets) glued to the front of the teeth and connected by a wire made of different alloys depending on the corrections to be made. Fortunately, these braces have greatly evolved over the last few decades and their appearance is now much more discreet. Their size has also been significantly reduced, making them more comfortable and less noticeable. Orthodontic braces are available in many shapes and materials: metallic, ceramic, plastic, clear and even gold-plated. Fixed braces apply a very light but constant force to the teeth, allowing the position of each tooth to be corrected individually and simultaneously to an optimal position. Regular adjustments are therefore necessary to ensure and check the progress of corrections and to maintain appropriate forces. Orthodontic treatment can be used to correct almost any type of malocclusion, from the simplest to the most complex problems.