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29.08.2023 | Original Article

Evaluation of changes in root canal length and accuracy of the electronic apex locator during different stages of endodontic treatment and retreatment

verfasst von: Ihan Vitor Cardoso, Matheus Pompeo Caldas Silveira, Filipe Colombo Vitali, Lucila Piasecki, Lucas da Fonseca Roberti Garcia, Eduardo Antunes Bortoluzzi, Cleonice Silveira Teixeira

Erschienen in: Odontology | Ausgabe 2/2024

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Abstract

This study evaluated changes in the root canal length (RCL) and the accuracy of the electronic apex locator (EAL) during the different stages of endodontic treatment and retreatment. Fifty-six mesial root canals of mandibular molars were selected. The actual root canal length (AL) of the canals was obtained by inserting a size 15 hand file up to the apical foramen, under magnification. The electronic lengths were obtained at the “APEX” mark of Root ZX II, using an alginate model. Both measurements were performed at three different stages of the initial root canal treatment—unflared, flared, and concluded—and at two stages of retreatment, after achieving patency and repreparation. Data were statistically analyzed and the significance level established was 5%. All stages produced a significant reduction in the AL (p < 0.05). The greatest variation was observed between the unflared–flared stages (0.2 mm) and between concluded–patency stages (0.09 mm), with no difference between them (p > 0.05). The accuracy of Root ZX II was negatively affected after achieving patency, presenting statistically significant difference compared to the other stages (p < 0.05). A significant reduction in the RCL was observed along the different stages of endodontic treatment and retreatment. The EAL was accurate to measure the root canals in most stages, except after achieving patency for endodontic retreatment. Determining and monitoring the RCL is an essential step towards a favorable prognosis, since it reduced along the different stages evaluated. Root ZX II was not accurate for endodontic retreatment.

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Titel: Evaluation of changes in root canal length and accuracy of the electronic apex locator during different stages of endodontic treatment and retreatment
verfasst von: Ihan Vitor Cardoso
Matheus Pompeo Caldas Silveira
Filipe Colombo Vitali
Lucila Piasecki
Lucas da Fonseca Roberti Garcia
Eduardo Antunes Bortoluzzi
Cleonice Silveira Teixeira
Publikationsdatum: 29.08.2023
Verlag: Springer Nature Singapore
Erschienen in: Odontology / Ausgabe 2/2024
Print ISSN: 1618-1247
Elektronische ISSN: 1618-1255
DOI: https://doi.org/10.1007/s10266-023-00846-5

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