Root canal conicity determination of primary second molars using nanotomography: An in vitro study.

Autor: Lucisano MP; Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Ramos GT; Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.; Departamento de Odontopediatría, Facultad de Odontología, Universidad Nacional Mayor de San Marcos, Lima, Peru., Blanco-Victorio DJ; Escuela de Medicina Humana, Facultad de Ciencias de la Salud, Universidad Señor de Sipán, Chiclayo, Peru., Ramírez-Sotelo LR; Departamento de Estomatología Médico Quirúrgico, Facultad de Odontologia, Universidad Nacional Mayor de San Marcos, Lima, Peru., Lima RB; Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Nelson-Filho P; Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., da Silva RAB; Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil., Miranda JA; Departamento de Odontopediatría, Facultad de Odontología, Universidad Nacional Mayor de San Marcos, Lima, Peru., da Silva LAB; Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: International journal of paediatric dentistry [Int J Paediatr Dent] 2025 Jan; Vol. 35 (1), pp. 33-44. Date of Electronic Publication: 2024 Apr 26.
DOI: 10.1111/ipd.13198
Abstrakt: Background: The conicity of the root canals of primary teeth is an important measure for endodontic therapies. However, determining this conicity depends on the methods employed, which requires further investigation.
Aim: The aim of this study was to determine the conicity of the root canals of the upper and lower primary second molars using nanotomography (nCT).
Design: An in vitro study was performed using nine primary second molars, both upper and lower, subjected to nCT. Comparisons between the diameters of root canals were performed between the thirds (cervical-D0, middle-D5, and apical-D7). The conicity (%) was determined for each root canal from cervical to apical. Data were statistically analyzed with a significance level of 5%.
Results: The conicity ranged from 2% to 8% for the upper primary second molars. Significant differences in root canal diameter between the thirds (D0, D5, and D7 points) were observed in the mesio- and distobuccal roots (p < .05), but not in the palatal roots (p > .05). For the lower primary second molars, the conicity ranged from 2% to 17%, as well as significant differences in root canal diameter between the thirds (D0, D5, and D7 points) were observed in all roots (distal, mesiobuccal, and mesiolingual; p < .05).
Conclusion: The conicity of the upper primary second molars was different from that of the lower ones, which showed a greater variability.
(© 2024 BSPD, IAPD and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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