Assessment of apical pressures at different automated irrigant flow rates: an ex vivo study based on computational fluid dynamic analysis

Sahil Choudhari; Kavalipurapu Venkata  Teja; Sindhu  Ramesh; Jerry  Jose; Krishnamachari  Janani; Raja Kumar

doi:10.4322/bds.2022.e3463

Autores

Sahil Choudhari MDS Student, Saveetha Dental College https://orcid.org/0000-0003-1282-3242
Kavalipurapu Venkata Teja Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, TamilNadu, India. https://orcid.org/0000-0003-0123-8873
Sindhu Ramesh Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, TamilNadu, India. https://orcid.org/0000-0001-8022-2815
Jerry Jose Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, TamilNadu, India. https://orcid.org/0000-0003-4555-7171
Krishnamachari Janani SRM Institute of Science and Technology, SRM Dental College, Department of Conservative Dentistry and Endodontics. Chennai, Tamil Nadu, India. https://orcid.org/0000-0003-1779-8525
Raja Kumar Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, TamilNadu, India. https://orcid.org/0000-0002-4531-9010

DOI:

https://doi.org/10.4322/bds.2022.e3463

Resumo

Objective: The current study aimed at assessing the induced apical pressure at various simulated irrigant
flow rates. Materials and Methods: Forty eight freshly extracted single-rooted premolars were decoronated
and prepared to size 30 0.04 taper using HY-Flex CM rotary file system and were scanned using cone-beam
computed tomography (CBCT). The scanned images were reconstructed to three-dimensional Computer-aided
design models (CAD) and the 3D needle was also reconstructed. Finally, simulations were done by placing the
30 gauge open-ended needle 3 mm short of the working length. Results: There was a statistically significant
difference (p<0.05) among the different groups compared. 1 ml/min flow rate induced the least apical pressures
(p<0.05) as compared to the other types. Conclusion: 1 ml/min flow rates induced the least apical pressures
when open-ended needles are used for irrigation.

KEYWORDS
Apical pressure; Computational fluid dynamic analysis; Flow rate; Irrigation; Root canal.