A small nodule of enamel can form on the root surface near
the amelocemental junction, particulary on maxillary molars; mandibular molars
are the second most frequent site (Figure 1-1). This may result from cells of
Hertwing’s sheath which have become differentiated into ameloblast. It consist
of a circumscribed nodule of otherwise normal enamel, occasionally with a core
of dentine and rarely containing a minute horn of pulp. Small lesions may
become coated with cementum.
Figure 1.1 - Enamel Pearl on Buccal
of Lower Right Second Molar