Camila Saa; Daniela Matus & Pablo Betancourt

The mandibular incisors (MI) are especially complex to treat endodontically due to their limited dimensions. In addition, the lack of knowledge about the wide morphological variation in this tooth group may contribute to endodontic treatment failure. One of the most recent classifications for the morphological study of the root canal system (RCS) was proposed by Ahmed et al. (2017). This classification addresses and overcomes the limitations encountered in the widely used Vertucci (1984) classification. This article analyzed the scientific literature to ascertain the most common morphology in mandibular central incisors (MCI) and mandibular lateral incisors (MLI). The included studies utilized cone-beam computed tomography (CBCT) and applied the classification system developed by Ahmed et al. (2017). A literature review was conducted using the PUBMED, LILACS, SciELO, SCOPUS, and EMBASE databases, considering articles with no restriction on years of publication, performed on human subjects, and published in English or Spanish. Five articles relevant to the study objective were included. The 1 MI 1-1 configuration is the most predominant in mandibular incisors, although a considerable presence of complex morphologies has been observed, with the frequent occurrence of second canals. The Ahmed et al. (2017) classification system provides a practical, accurate and easy-to-use method for categorizing root and root canal structures.

KEY WORDS: Mandibular incisors; Root canal system; Ahmed classification; Cone beam computed tomography; Endodontics.

SAA, C.; MATUS, D. & BETANCOURT, P. Morphological analysis of mandibular incisors using the Ahmed classification system. Literature review. Int. J. Morphol., 43(1):269-274, 2025.