Relation between enamel and cementum:
A. cementum is slightly above (Overlap) enamel ***
B. enamel is slightly above cementum
C. Enamel and cementum have sharp contact
D. no junction between enamel and cementum
There exists a normal variation in the relationship of the cementum and the enamel at the cementoenamel junction. In about 60–65% of teeth, the cementum overlaps the enamel at the CEJ, while in about 30% of teeth, the cementum and enamel abut each other with no overlap. In only 5–10% of teeth, there is a space between the enamel and the cementum at which the underlying dentin is exposed.