Efficacy of Different Irrigation Needles and Ultrasonic Activation on Calcium Hydroxide Removal: A Micro-CT Study Using 3D-Printed Endodontic Models.

Autor: Yoo YJ; Department of Conservative Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea., Kim JH; Department of Dental Education, Dental and Life Science Institute, School of Dentistry, Pusan National University and Dental Research Institute, Yangsan, Republic of Korea., Hwang JJ; Department of Oral and Maxillofacial Radiology, Dental and Life Science Institute, School of Dentistry, Pusan National University and Dental Research Institute, Yangsan, Republic of Korea., Sigurdsson A; Department of Endodontics, College of Dentistry, New York University, New York, New York., Kim HC; Department of Conservative Dentistry, Dental and Life Science Institute, School of Dentistry, Pusan National University and Dental Research Institute, Yangsan, Republic of Korea. Electronic address: golddent@pusan.ac.kr.
Jazyk: angličtina
Zdroj: Journal of endodontics [J Endod] 2024 Oct; Vol. 50 (10), pp. 1478-1483. Date of Electronic Publication: 2024 Jul 20.
DOI: 10.1016/j.joen.2024.07.008
Abstrakt: Introduction: The aim of this study was to evaluate the efficacy of different irrigation needles and passive ultrasonic activation in removing Ca(OH) 2 from an endodontic model that duplicated a root canal configuration of a human natural tooth.
Methods: An extracted human maxillary premolar was subjected to root canal preparation and scanned with microcomputed tomography. A 3-dimensional reconstruction model of the natural tooth was printed to endodontic models using a polyjet printer. The root canals of the models were filled with Ca(OH) 2 paste and divided into 2 groups based on the irrigation protocol: conventional syringe-needle irrigation (conventional group) and passive ultrasonic irrigation (PUI) group. Each group was subdivided into 3 groups (n = 10) according to the type of needle: half-cut, side-vented, and TruNatomy irrigation needle. Microcomputed tomographyimaging was used to assess the percentage of reduction of Ca(OH) 2 . Data were analyzed using two-way analysis of variance test (α = .05).
Results: The side-vented and TruNatomy irrigation needles showed significantly higher percentage reductions than the half-cut needle (P < .05) in the conventional irrigation group. The PUI group showed significantly higher percentage reductions of Ca(OH) 2 than the conventional group regardless of the type of needle (P < .05). However, no significant difference was found among the needles in the PUI group.
Conclusions: The type of irrigation needle and the use of PUI influenced the removal efficacy of Ca(OH) 2 . PUI enhanced the removal of Ca(OH) 2 regardless of the type of irrigation needle.
(Copyright © 2024 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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