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Volume 59
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Article

Cleaning and Disinfecting Oval-Shaped Root Canals: Ex Vivo Evaluation of Three Rotary Instrumentation Systems with Passive Ultrasonic Irrigation

by
Ying Li
1,2,
Zhengyang Wang
3,
Pingping Bao
1,2,
Tingting Meng
1,2,
Meng Liu
3,
Huixu Li
1,2,
Ya Shen
4,
Dayong Liu
3,
Zhi Jia
3,* and
He Liu
4,*
1
Department of Endodontics, Tianjin Stomatological Hospital, School of Medicine, NanKai University, Tianjin 300041, China
2
Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction, Tianjin 300041, China
3
Department of Endodontics, School of Stomatology, Tianjin Medical University, Tianjin 300070, China
4
Division of Endodontics, Department of Oral Biological and Medical Sciences, Faculty of Dentistry, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
*
Authors to whom correspondence should be addressed.
Medicina 2023, 59(5), 962; https://doi.org/10.3390/medicina59050962
Submission received: 24 March 2023 / Revised: 10 May 2023 / Accepted: 12 May 2023 / Published: 16 May 2023
(This article belongs to the Special Issue Nickel-Titanium Rotary Instruments in Endodontics)
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Abstract

Background and Objectives: Successful root canal treatment depends on the thorough removal of biofilms through chemomechanical preparation. This study aimed to investigate and compare the cleaning and disinfecting efficiency of oval-shaped root canals using XP-endo Shaper (XPS), ProTaper Next (PTN), and HyFlex CM (HCM) in combination with passive ultrasonic irrigation (PUI). Materials and Methods: Ninety extracted teeth were contaminated and randomly divided into three groups: XPS, PTN, and HCM. Each group was assigned to three subgroups: subgroup A (sterile saline), subgroup B (3% sodium hypochlorite and 17% ethylenediaminetetraacetic acid), and subgroup C (3% sodium hypochlorite, 17% ethylenediaminetetraacetic acid, and PUI). Bacterial sampling was conducted both from baseline samples and samples after chemomechanical preparation. Scanning electron microscopy (SEM) was used to evaluate the residue bacterial biofilms, hard tissue debris, and smear layers on the buccolingual walls of oval-shaped root canals. Results: When combined with sterile saline, XPS demonstrated a higher reduction of bacterial counts and was more effective in eradicating Enterococcus faecalis in the middle third of the canals compared to the other instruments (p < 0.05). Additionally, when used with antimicrobial irrigants, XPS was more effective in disinfecting the coronal third of the canals than the other instruments (p < 0.05). Furthermore, XPS reduced hard tissue debris more effectively in the middle third of canals than in the apical third (p < 0.05). Conclusions: XPS outperforms PTN and HCM in disinfecting oval-shaped root canals. Despite the fact that combining XPS and PUI improves cleaning and disinfecting, removing hard tissue debris from the critical apical area remains challenging.
Keywords: endodontic disinfection; endodontic irrigation; oval-shaped root canal; passive ultrasonic irrigation; scanning electron microscope endodontic disinfection; endodontic irrigation; oval-shaped root canal; passive ultrasonic irrigation; scanning electron microscope

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MDPI and ACS Style

Li, Y.; Wang, Z.; Bao, P.; Meng, T.; Liu, M.; Li, H.; Shen, Y.; Liu, D.; Jia, Z.; Liu, H. Cleaning and Disinfecting Oval-Shaped Root Canals: Ex Vivo Evaluation of Three Rotary Instrumentation Systems with Passive Ultrasonic Irrigation. Medicina 2023, 59, 962. https://doi.org/10.3390/medicina59050962

AMA Style

Li Y, Wang Z, Bao P, Meng T, Liu M, Li H, Shen Y, Liu D, Jia Z, Liu H. Cleaning and Disinfecting Oval-Shaped Root Canals: Ex Vivo Evaluation of Three Rotary Instrumentation Systems with Passive Ultrasonic Irrigation. Medicina. 2023; 59(5):962. https://doi.org/10.3390/medicina59050962

Chicago/Turabian Style

Li, Ying, Zhengyang Wang, Pingping Bao, Tingting Meng, Meng Liu, Huixu Li, Ya Shen, Dayong Liu, Zhi Jia, and He Liu. 2023. "Cleaning and Disinfecting Oval-Shaped Root Canals: Ex Vivo Evaluation of Three Rotary Instrumentation Systems with Passive Ultrasonic Irrigation" Medicina 59, no. 5: 962. https://doi.org/10.3390/medicina59050962

APA Style

Li, Y., Wang, Z., Bao, P., Meng, T., Liu, M., Li, H., Shen, Y., Liu, D., Jia, Z., & Liu, H. (2023). Cleaning and Disinfecting Oval-Shaped Root Canals: Ex Vivo Evaluation of Three Rotary Instrumentation Systems with Passive Ultrasonic Irrigation. Medicina, 59(5), 962. https://doi.org/10.3390/medicina59050962

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