Carla Soto; Macarena Rodríguez; Julio Figueroa; Alejandro Neira & Patricio Meléndez

The upper second primary molars play a crucial function in oral development and their conservation is of vital importance. Therefore, when necessary, endodontic treatment depends on the morphological variability of the roots and root canals of the tooth, information that has not been described in primary secondary molars in Chilean children. The objective of the present study was to describe the morphological characteristics of the maxillary second primary molars in a subpopulation of Chilean children using cone beam computed tomography. In the present study, tomographic images of the upper second primary molars were obtained, from which the number of roots (N), the number of root canals per molar (N) and the length of the root were determined. (mm). the root canal (mm) and the morphological classification of the root canal system for each root using the Vertucci classification. Of a total of 26 upper primary second molars, a higher frequency of 3 roots (96.2 %) and 4 root canals (46.2 %) per molar was observed. Regarding root morphology, it was shown that the most frequent classification in the three roots present in the population of Chilean children was type I (Mesiovestibular: 53.8 % ; Distovestibular: 73.1 % ; Palatal: 92.3 %). The morphological characteristics of the upper second primary molars in the population of Chilean children mainly present 3 roots with a singular root canal, information that can help endodontic treatments to preserve premature teeth in the oral cavity, reducing possible complications.

KEY WORDS: Deciduous; Molar; Anatomy; Cone- Beam Computed Tomography.

SOTO, C.; RODRÍGUEZ, M.; FIGUEROA, J.; NEIRA, A. & MELÉNDEZ, P. Morphological study of Chilean maxillary second temporary molars using cone beam computed tomography. Int. J. Morphol., 42(6):1497-1503, 2024.