The most important thing to know about white marks on teeth is that they are preventable. All you have to do to be white mark-free is to keep teeth clean and stay away from some foods and beverages. It’s that simple.
When we say simple, we mean four easy steps simple:
- Brush as often as recommended by your orthodontist, including after each meal or snack whether at school, work or home
- Floss at least once a day
- Avoid or limit acidic foods and drinks (soda, flavored waters with carbonation, sweet tea, sports drinks etc.) for the duration of your treatment
- See your family dentist at least every four to six months for a check-up or more often if it’s recommended
Handy tools like interproximal brushes, floss threaders, floss holders, water irrigators and power toothbrushes can make cleaning teeth convenient, quick and, most of all, thorough. Fluoride toothpaste and/or rinses are advisable, too.
A White Mark Is Permanent
A white mark on a tooth – known as decalcification – is the very beginning of a cavity. Prompted by a build-up of plaque, calcium and other minerals leach out tooth enamel and leave a permanent white mark behind. It can progress to a full-blown cavity if plaque keeps collecting.
Plaque is made of bacteria, food particles and saliva. It feeds on sugars to form an acid that damages teeth. Poor brushing, frequent snacking and intake of sugary and/or acidic beverages contribute to white marks and decay.
read more here
https://www.aaoinfo.org/blog/will-treatment-cause-white-marks-on-teeth/