Irrigation dynamics associated with positive pressure, apical negative pressure and passive ultrasonic irrigations: A computational fluid dynamics analysis

被引：43
作者：
Chen, Jose Enrique [1 ]
Nurbakhsh, Babak [2 ]
Layton, Gillian [2 ]
Bussmann, Markus [1 ]
Kishen, Anil [2 ]
机构：
[1] Univ Toronto, Toronto, ON M5G 1P7, Canada
[2] Univ Toronto, Fac Dent, Discipline Endodont, Toronto, ON M5G 1P7, Canada
来源：
AUSTRALIAN ENDODONTIC JOURNAL | 2014年 / 40卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
dental pulp cavity; disinfection; numerical analysis computer-assisted; therapeutic irrigation; ultrasonic; ROOT-CANAL IRRIGATION; ROTARY INSTRUMENTATION; FLOW; MODEL; VALIDATION; IRRIGANTS; BACTERIA; EFFICACY; NEEDLES; MOLARS;
D O I：
10.1111/aej.12027
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
Complexities in root canal anatomy and surface adherent biofilm structures remain as challenges in endodontic disinfection. The ability of an irrigant to penetrate into the apical region of a canal, along with its interaction with the root canal walls, will aid in endodontic disinfection. The aim of this study was to qualitatively examine the irrigation dynamics of syringe irrigation with different needle tip designs (open-ended and closed-ended), apical negative pressure irrigation with the EndoVac (R) system, and passive ultrasonic-assisted irrigation, using a computational fluid dynamics model. Syringe-based irrigation with a side-vented needle showed a higher wall shear stress than the open-ended but was localised to a small region of the canal wall. The apical negative pressure mode of irrigation generated the lowest wall shear stress, while the passive-ultrasonic irrigation group showed the highest wall shear stress along with the greatest magnitude of velocity.
引用
收藏
页码：54 / 60
页数：7
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