Journal of Research in Dental
and Maxillofacial Sciences
Volume 10, Issue 4 (12-2025)
J Res Dent Maxillofac Sci 2025, 10(4): 274-284 |
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Ethics code: IR.TUMS.DENTISTRY.REC.1397.04
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Bagheri P, Bolhari B, Meraji N, Kharazifard M J, Morsali S A, Aryanezhad S S. In Vitro Quantification of Residual Calcium Hydroxide Mixed with Different Carriers After Root Canal Irrigation with Three Different Techniques. J Res Dent Maxillofac Sci 2025; 10 (4) :274-284
URL: http://jrdms.dentaliau.ac.ir/article-1-812-en.html
URL: http://jrdms.dentaliau.ac.ir/article-1-812-en.html
Parisa Bagheri1 
, Behnam Bolhari1 , Naghme Meraji2 , Mohammad Javad Kharazifard3 , Seyed Ali Morsali4 , Seyed Sasan Aryanezhad *5
, Behnam Bolhari1 , Naghme Meraji2 , Mohammad Javad Kharazifard3 , Seyed Ali Morsali4 , Seyed Sasan Aryanezhad *5
1- Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2- Private Endodontist, Tehran, Iran.
3- Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
4- Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
5- Oral & maxillofacial radiologist, Department of Oral & maxillofacial Radiology, School of Dentistry, Islamic Azad University of Isfahan (Khorasgan), Isfahan, Iran ,ariasasan7@gmail.com
2- Private Endodontist, Tehran, Iran.
3- Department of Epidemiology and Biostatistics, Tehran University of Medical Sciences, Tehran, Iran
4- Dentist, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
5- Oral & maxillofacial radiologist, Department of Oral & maxillofacial Radiology, School of Dentistry, Islamic Azad University of Isfahan (Khorasgan), Isfahan, Iran ,
Abstract: (6 Views)
Abstract
Background and Aim: This study quantified the amount of residual calcium hydroxide (CH) mixed with saline, propylene glycol (PG), nano-silver (NS), and 0.2% chlorhexidine (CHX) carriers after root canal irrigation with the conventional needle (CN), safe-end needle (SEN), and ultrasonic irrigation (UI).
Materials and Methods: In this in vitro study, the root canals of 190 single-rooted premolars were instrumented with Mtwo, and longitudinally sectioned in half. After smear layer removal, the root canals were filled with CH mixed with either saline, PG, 0.2% CHX, or NS. CH was removed with CN irrigation, SEN irrigation, or UI. The residual CH was quantified in the coronal, middle, and apical thirds using a stereomicroscope. The penetration depth of CH into dentinal tubules was measured under a scanning electron microscope (SEM). Data were analyzed using three-way and one-way ANOVA, and Tukey’s test (alpha=0.05).
Results: The effects of carrier type (P=0.0001), irrigation technique (P=0.0001), and distance from the apex (P=0.0001) were significant on the residual CH percentage. The efficacy of UI was slightly superior to other techniques in saline and CHX groups in the coronal third, and the NS group in the middle third. The irrigation technique had a significant effect on residual CH in the coronal and middle thirds, and no significant effect on the penetration depth of CH. The penetration depth of CH was not significantly different among different carrier groups (P>0.05).
Conclusion: The efficacy of UI in removal of CH was variable, depending on the carrier type and distance from the apex.
Background and Aim: This study quantified the amount of residual calcium hydroxide (CH) mixed with saline, propylene glycol (PG), nano-silver (NS), and 0.2% chlorhexidine (CHX) carriers after root canal irrigation with the conventional needle (CN), safe-end needle (SEN), and ultrasonic irrigation (UI).
Materials and Methods: In this in vitro study, the root canals of 190 single-rooted premolars were instrumented with Mtwo, and longitudinally sectioned in half. After smear layer removal, the root canals were filled with CH mixed with either saline, PG, 0.2% CHX, or NS. CH was removed with CN irrigation, SEN irrigation, or UI. The residual CH was quantified in the coronal, middle, and apical thirds using a stereomicroscope. The penetration depth of CH into dentinal tubules was measured under a scanning electron microscope (SEM). Data were analyzed using three-way and one-way ANOVA, and Tukey’s test (alpha=0.05).
Results: The effects of carrier type (P=0.0001), irrigation technique (P=0.0001), and distance from the apex (P=0.0001) were significant on the residual CH percentage. The efficacy of UI was slightly superior to other techniques in saline and CHX groups in the coronal third, and the NS group in the middle third. The irrigation technique had a significant effect on residual CH in the coronal and middle thirds, and no significant effect on the penetration depth of CH. The penetration depth of CH was not significantly different among different carrier groups (P>0.05).
Conclusion: The efficacy of UI in removal of CH was variable, depending on the carrier type and distance from the apex.
Type of Study: Original article |
Subject:
Endodontics
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