RT Journal Article
T1 Root canal conicity of primary maxillary molars and its relationship with different rotational systems
A1 Ticona Flores, Jesús Miguel
A1 Diéguez Pérez, Montserrat
A1 Gallardo López, Nuria Esther
AB Aim: To determine the root canal taper of primary maxillary molars and the degree of compatibility of various rsotary systems concerning root anatomy.Materials and methods: This in vitro study collected donated first and second primary molars (1 M and 2 M) with mesio-buccal (MB), disto-buccal (DB) and palatal (P) roots canal without physiological resorption, type I according to Vertucci, and root length greater than 4 mm. The teeth were mounted in silicone blocks and scanned with tomographic equipment from which images were reconstructed and analysed with the 3D-Slicer® programme, allowing for the measurement of the diameters of the root canals and the calculation of their tapers. The tapers were compared with the characteristics of the rotary systems: Endogal®, Protaper universal®, Mtwo® and Protaper Next®. MANOVA and interclass correlation coefficient (ICC) tests were used for statistical analysis.Results: After the analysis of 130 root canals, a mean increase in taper in the buccal-palatal (BP) direction was observed in the 2 M (MB:16.7%; DB:16.23%; P:8.86%) and the 1 M (MB: 9.75%; DB: 11.30%; P: 2.26%). In the mesiodistal (MD) direction, the 1 M exhibited an average taper of MB:6.95%, DB:4.67%, P:12.74% and in the 2 M, an average taper of 4.67% for the MB canal; 6.60%; 20.14% for DB and P canals, respectively.Conclusion: The rotary files that presented the best adaptation to the diameter and taper of the root canal were Endogal® and ProTaper Universal® systems.
PB Springer
SN 1818-6300
YR 2025
FD 2025-07-11
LK https://hdl.handle.net/20.500.14352/122979
UL https://hdl.handle.net/20.500.14352/122979
LA eng
NO Ticona-Flores JM, Gallardo-López NE, Diéguez-Pérez M. Root canal conicity of primary maxillary molars and its relationship with different rotational systems. Eur Arch Paediatr Dent. 2025 Jul 11. doi: 10.1007/s40368-025-01075-w
DS Docta Complutense
RD 19 mar 2026