Which of the following statements concerning root canals and their foramina is NOT true?

Which of the following statements concerning

root canals and their foramina is NOT true?

A. Root canals bifurcate and have dual

foramina.

B. The major foramen is precisely at

the apex of the tooth.

C. The root canals may join and have a

single foramen.

D. The dentino-cemental junction is

precisely at the apex of the tooth.

E. A cross section of the canal in

the apical region is relatively round.

Answer: D

This junction is through-out the entire root length, unlike the cemento-enamel junction.