Many parents fear the dreaded white spots. They ask regularly during their child’s
orthodontic treatment if their child is getting white spot lesions. What they
often forget is that the white spot lesions are not from the braces. They are
from not keeping the teeth clean enough, and they can happen with or without
braces.
White spots on teeth are actually white scars, and once they
appear, they may become permanent. The
white spots are the first step in the caries process; white spots become
cavities. Poor oral hygiene allows plaque to build up on the tooth
surface. Maintaining adequate hygiene is
even more difficult when braces are present because the brackets create hiding
places for this bacterial accumulation.
The bacteria in the plaque eat the food which is left on the tooth
surfaces; they especially like to eat sweet and sugary foods. The bacteria then
“poop” on the teeth. This acidic bacterial excrement can erode or “decalcify”
the enamel surface of the teeth. Demineralization
(a decrease in the mineral content of the enamel) can happen on the surfaces
you can see, but it can also happen between the teeth if dental floss or
waterpik irrigation is not used daily. (The decalcifications between the teeth
are seen on x-rays as “incipient lesions”, i.e. early cavities.) As fluoride and the natural minerals of your saliva
fight to keep the enamel strong, the decalcified areas are recalcified. This process of decalcification and
remineralization creates unsightly color changes (both white spots and dark
areas) of the tooth surface.
White spot lesions are also common in people who have dry
mouth issues. Reduced saliva flow lower’s
the mouth’s natural ability to neutralize the acids. Many people with dry mouth
“self -medicate” with lemon drops. Although the lemon drops increase salivation,
they also feed the bacteria on the tooth surface as well as increase the mouth’s
acidity directly (lemons are acidic). Both acid from the bacteria, and acid
from the food increase demineralization of the tooth surfaces. Remember, this
demineralization is the first step in tooth decay. A better option to increase
salivary flow would be using xylitol candies and sprays, such as Xylimelt dry
mouth lozenges or Carifree spray, because xylitol inhibits bacterial growth.
Another factor in white spot lesions, in addition to
accumulation of bacteria, is the application of dietary acid straight on tooth
surfaces. Many foods and beverages are acidic.
When people sip a lot of acidic beverages, like carbonated beverages
(seltzer and soda), lemonade, sports drinks, tea with lemon, or coffee, they
bathe the tooth surfaces in acid. The longer the period of time during which
the acidic beverage is applied, the more damage it does. This is why Dr. Okun recommends drinking the
acidic beverages with a meal so that there is increased salivary flow as well
as other foods to decrease the acidity of the mouth. She also recommends
limiting the time that sugary foods are in the mouth. (Eat a cookie and then
rinse out rather than suck on a candy or lick a lollipop for more than 10
minutes.) Dr. Okun recommends rinsing with water after eating or drinking, to
wash the food particles and acid off of the teeth. It is also beneficial to
rinse with fluoride daily to strengthen the tooth surfaces and to help the
teeth re-calcify following acid attacks.
For help with proper cleaning of the teeth, see our hygiene
videos on our website https://www.okunortho.com/brushing-and-flossing. Be sure to brush thoroughly at least two
times a day, and either floss or use the “Waterpik” dental irrigator daily to
clean between the teeth.










