It's Often Not the Braces
Your teeth can become stained during orthodontic treatment for several reasons. Traditional braces have a complex design of brackets and wires that can trap food, leading to a buildup of bacteria that causes plaque to form. Therefore, it's not the actual braces that cause these stains but the biofilm that forms in crevices that are hard to reach.
Having braces make it difficult to remove this plaque, allowing it to create acids that strip the minerals from your enamel. This demineralization changes the way the tooth surface reflects the light, resulting in the development of those tiny white spots in the areas that are difficult to reach.
Plaque also increases your risk for tooth decay and gum disease while the braces are on. Prevent these issues with a healthy oral care routine for braces. Gently brushing your teeth to avoid damaging the brackets and flossing with an orthodontic floss threader are effective ways to keep your mouth healthy while wearing braces.
The bonding material used to attach orthodontic brackets to teeth can become discolored over time from exposure to tooth-staining foods and beverages, but this material will be removed when the brackets come off. Preventive measures are best for avoiding stains while wearing braces.