| ORIGINAL ARTICLE |
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| Year : 2021 | Volume
: 24
| Issue : 4 | Page : 314-322 |
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Assessment of irrigant flow and apical pressure in simulated canals of single-rooted teeth with different root canal tapers and apical preparation sizes: An ex vivo study
Immadi Laxmi Sujith, Kavalipurapu Venkata Teja, Sindhu Ramesh
Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, India
Correspondence Address:
Dr. Sindhu Ramesh
Department of Conservative Dentistry and Endodontics, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, 162, Poonamallee High Road, Chennai - 600 077, Tamil Nadu
India
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/jcd.jcd_651_20
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Background : Irrigation dynamics vary in optimally shaped canals. Various factors combine to create a stress-induced environment leading to a dynamic irrigant flow.
Aim : The aim of the study is to evaluate the irrigant flow and apical pressure using 30G open-ended needle in virtually created root canal model of single-rooted teeth.
Materials and Methods : Sixty extracted single-rooted premolars were selected and prepared using a single rotary instrument Hyflex CM and grouped as – Group I: 30 size 0.6% taper (n = 15), Group II: 30 size 0.4% taper (n = 15), Group III: 25 size 0.6% taper (n = 15), and Group IV: 25 size 0.4% taper (n = 15). Postinstrumentation imaging was carried out using cone-beam computed tomography, and computer-aided design models were obtained. Subgrouping was done based on the nozzle position, and computational fluid dynamic analysis was carried out for the respective parameters assessed.
Results : Statistical significance was elicited in all the groups at different nozzle positions analyzed (P < 0.05). A post hoc test revealed significance in the mean flow rate and flow velocity in Group I at low nozzle position (P < 0.05) as compared to others.
Conclusions : 30 size 0.6% tapered preparations proved efficient irrigant flow and least apical pressures at all nozzle positions.
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