All of the following statements are TRUE about enamel pearls EXCEPT:
a. Enamel pearls are small, rounded nodules of enamel found embedded in the root cementum or dentin.
b. Enamel pearls can be found on any tooth, but are most commonly found on molars and premolars.
c. Enamel pearls can only form during tooth development and are not present in fully formed teeth.
d. Enamel pearls are usually asymptomatic, but can sometimes be a contributing factor to periodontal disease.