Which statement is NOT true about taurodontism?

Taurodontism is a developmental anomaly characterized by an enlarged pulp chamber with apical displacement of the pulpal floor and bifurcation/trifurcation, shortened roots, and absence of the normal cervical constriction at the cementoenamel junction. It results from failure of Hertwig's epithelial root sheath to invaginate at the proper horizontal level during root development. Taurodontism can affect both primary and permanent dentition; it is NOT exclusive to primary teeth. It is most commonly seen in permanent molars. It may occur as an isolated finding or in association with syndromes such as amelogenesis imperfecta, Klinefelter syndrome, and tricho-dento-osseous syndrome.