Estudio in vitro de las variaciones anatómicas internas de los incisivos inferiores permanentes, usando tomografías computarizada de haz cónico.

Abstract

INTRODUCTION: One of the main reasons leading to failure in endodontic treatment of permanent lower incisors is that some root canals may go unnoticed due to a lack of knowledge about the anatomy of the canals or insufficient investigations of additional canals. OBJECTIVE: To analyze the different internal anatomical variations in the lower incisors and compare them with the Vertucci classification. MATERIALS AND METHODS: A descriptive cross-sectional study was carried out. The sample consisted of 68 extracted lower incisors. The canals were analyzed according to the Vertucci classification, the location of the apical foramen using CBCT as a diagnostic tool. RESULTS: Of the lower central incisors, the highest prevalence was type I with 95.5%. Of the lower lateral incisors, the highest prevalence was type I with 85.7%. It was observed that in the lower central incisors (86.4%) and lateral incisors (5.7%) the highest prevalence was a foramen in a central position. It was recorded that the periapical radiographs of the two groups of central incisors (86%) and lateral incisors (93%) coincided with that of the CBTC. CONCLUSION: Three types of canals were observed, according to Vertucci I, II, and III. Both in the lower central and lateral incisors the most prevalent was type I. The location of the apical foramen in the lower central and lateral incisors is more prevalent in the central position. The periapical radiographs obtained from each piece have a high coincidence with the CBTC.