Syringe irrigation in confluent canals: A sequential computational fluid dynamics assessment

IF 1.3 4区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Australian Endodontic Journal Pub Date : 2023-10-17 DOI:10.1111/aej.12805

Mário Rito Pereira DDS, MSc, Goncalo Silva PhD, Viriato Semiao MSc, PhD, Jorge N. R. Martins DDS, MSc, PhD, Vania Silverio PhD, Paula Pascoal-Faria PhD, Isabel Duarte MSc, PhD, Nuno Alves PhD, António Ginjeira MD, DMD, PhD

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Abstract

This study aims to assess the influence of root canal preparation, irrigation needle design and its placement depth in the irrigation flow of confluent canals during syringe irrigation. A mandibular molar presenting two confluent canals in its mesial root was sequentially prepared and scanned by micro-computed tomography after mechanical preparation up to ProTaper Next system sizes X2 (25/.06v), X3 (30/.07v) and X4 (40/.06v). In each of the root canal preparation models, a side-vented and an open-ended needle at 5, 3 and 2 mm from the working length were included, and irrigation flow was assessed by a validated computational fluid dynamics model. The results revealed that the irrigant flowed out of the confluent canals mainly through the canal that did not have the needle. Apical penetration and renewal of the irrigant were most efficiently achieved with the use of a 30G open-ended needle and a 30/.07v preparation.

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合流管中的注射器冲洗：连续计算流体动力学评估。

本研究旨在评估根管预备、冲洗针设计及其放置深度对注射器冲洗过程中合流管冲洗流量的影响。在机械制备至ProTaper Next系统尺寸X2（25/.06v）、X3（30/.07v）和X4（40/.06v）后，依次制备在近中根有两个合流管的下颌磨牙，并通过微型计算机断层扫描进行扫描 mm，并通过经验证的计算流体动力学模型评估灌溉流量。结果表明，冲洗剂主要通过没有针头的管道流出汇流管。使用30G开放式针头和30/.07v制剂最有效地实现了冲洗剂的顶端渗透和更新。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Australian Endodontic Journal DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.50

自引率

6.20%

发文量

审稿时长

>12 weeks

期刊介绍： The Australian Endodontic Journal provides a forum for communication in the different fields that encompass endodontics for all specialists and dentists with an interest in the morphology, physiology, and pathology of the human tooth, in particular the dental pulp, root and peri-radicular tissues. The Journal features regular clinical updates, research reports and case reports from authors worldwide, and also publishes meeting abstracts, society news and historical endodontic glimpses. The Australian Endodontic Journal is a publication for dentists in general and specialist practice devoted solely to endodontics. It aims to promote communication in the different fields that encompass endodontics for those dentists who have a special interest in endodontics.