1. 1) Alani A, Bishop K (2008) Dens invaginatus. Part 2: clinical, radiographic features and management options. Int Endod J 41:1137–1154.
2. 2) Jung M (2004) Endodontic treatment of dens invaginatus type III with three root canals and open apical foramen. Int Endod J 37:205–213.
3. 3) Kaneko T, Sakaue H, Okiji T, Suda H (2011) Clinical management of dens invaginatus in a maxillary lateral incisor with the aid of cone-beam computed tomography — a case report. Dent Traumatol 27:478–483.
4. 4) Kato H, Nakagawa K (2010) FP core carrier technique: Thermoplasticized gutta-percha root canal obturation technique using polypropylene core. Bull Tokyo Dent Coll 51:213–220.
5. 5) Kato H, Yamaguchi Y, Nakagawa K (2010) Evaluation of new thermoplasticized guttapercha obturation technique using polypropylene core for filling of lateral and main canals. The Shikwa Gakuho 110:331–338. (in Japanese)