Effect of passive ultrasonic irrigation and manual dynamic irrigation on smear layer removal from root canals in a closed apex in vitro model

2013 ◽  
Vol 5 (3) ◽  
pp. 188-193 ◽  
Author(s):  
Syed Mukhtar-Un-Nisar Andrabi ◽  
Ashok Kumar ◽  
Afaf Zia ◽  
Huma Iftekhar ◽  
Sharique Alam ◽  
...  
Keyword(s):  
In Vitro Model ◽  
Smear Layer ◽  
Passive Ultrasonic Irrigation ◽  
Layer Removal ◽  
Root Canals ◽  
Ultrasonic Irrigation ◽  
Vitro Model

scholarly journals Comparative Evaluation of Smear Layer Removal Using Four Different Irrigation Techniques: An in-vitro Study

2019 ◽  
Vol 3 (2) ◽  
pp. 80-86
Author(s):  
Ajay Chhabra ◽  
Apoorva Rana ◽  
Nisha Garg ◽  
Ruhani Bhatia ◽  
Shobit Sethi
Keyword(s):  
In Vitro Study ◽  
Group Iv ◽  
Smear Layer ◽  
Passive Ultrasonic Irrigation ◽  
Group Iii ◽  
Layer Removal ◽  
Group I ◽  
Individual Comparison ◽  
Ultrasonic Irrigation

INTRODUCTION: Irrigation is the vital part of root canal debridement. Usually post biomechanical preparation, the canal walls are covered by smear layer. It is important to remove this layer before obturation for better bond between the filling and walls. Conventional needle irrigation doesn’t give us adequate cleaning, therefore, new irrigation techniques are being tried to facilitate better smear layer removal. AIM: The aim was to evaluate and compare the smear layer removal by PATS,  EndoActivator device, Passive ultrasonic irrigation and side vent needle irrigation from canal walls. MATERIALS AND METHODS:  60 extracted mandibular premolars were instrumented up to 35/.04 with Heroshaper files. Samples were divided into 4 groups randomly before final irrigation as follows: Group I (n=15): Irrigation with side vent needles (Nexus ltd.,India), Group II (n=15): Irrigation with EndoActivator (Advanced Endodontics, Santa Barbara, CA ) Group III (n=15): Irrigation with PATS ( InnovationsEndo,India), Group IV (n=15): Irrigation with ultrasonic tips (Mani inc.). Teeth were split and one-half of each tooth was chosen for SEM examination.  The images were taken at apical third and scoring was done according to criteria by Torabinejad et al in 2003. Data obtained were analyzed using Kruskal-Wallis analysis of variance followed by Mann–Whitney U-test for individual comparison. RESULTS: All irrigating systems remove smear layer but PUI has better cleaning ability as compared to other groups. CONCLUSION: Passive ultrasonic irrigation shows better smear layer removal as compared to other techniques

scholarly journals Comparison of smear layer removal ability of different agitation system in the apical third of the root canal using SEM: an in vitro study

2020 ◽  
Vol 5 (1) ◽  
pp. 24-28
Author(s):  
Zaighum Raza ◽  
◽  
Shiraz Pasha ◽  
Kusum Valli ◽  
VijayaLakshmi Yartha ◽  
...  
Keyword(s):  
Root Canal ◽  
In Vitro Study ◽  
Antimicrobial Effect ◽  
Smear Layer ◽  
Passive Ultrasonic Irrigation ◽  
Layer Removal ◽  
Group I ◽  
Working Length ◽  
Ultrasonic Irrigation

Introduction: Sodium Hypochlorite (NaOCl) remains gold standard as a result of its antimicrobial effect and tissue dissolution properties, but it has no effect on inorganic portion of smear layer. Thus the combination of NaOCl and EDTA has been proven to have the perfect ability in removal of both organic and inorganic debris. These irrigants when used with conventional syringe irrigation were unable to penetrate the apical portion of the root canal, so new activation devices have come in the market which claims to be effective in delivering the irrigant to the working length. Objective/Aim: This study evaluated and compared the efficacy of recently introduced irrigation activation devices EndoActivator, Passive ultrasonic irrigation and Laser on removal of smear layer from the apical third of instrumented root canal using Scanning electron microscope. Methods: Forty three single rooted teeth were prepared with the help of protaper files and divided into four groups. Group I: EDTA only, Group II: Endoactivator, Group III: Laser, Group IV: Passive Ultrasonic Irrigation (PUI). Three specimens were not treated with any smear layer removal protocol and were immediately sectioned and sent for SEM examination. The remaining 40 samples from 4 groups after treatment with different activation system were also sectioned and sent for SEM examination. The data obtained were statistically analysed using Friedman’s test. Results: All the four groups removed smear layer and the laser showed best smear layer removing capability compared to other groups but was significant only with respect to control and group I (EDTA group without any activation) (p<0.05). Conclusions: Within the limitations of the study, all the activation systems were able to remove the smear layer from the apical third of the root canal with laser showing the best result followed by Endoactivator and then PUI.

Evaluation of the Efficacy of EASYDO ACTIVATOR Irrigation Technique in Intracanal Smear Layer and Debris Removal from Mature Permanent Teeth

2021 ◽  
Author(s):  
Shao-Hui Zhang ◽  
Zheng-Rong Gao ◽  
Dusenge Marie Aimee ◽  
Yao Feng ◽  
Jing Hu ◽  
...  
Keyword(s):  
Smear Layer ◽  
Permanent Teeth ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Effective Removal ◽  
Apical Direction ◽  
Debris Removal ◽  
Ultrasonic Irrigation ◽  
Group 3 ◽  
Group 2

Abstract EASYDO ACTIVATOR (EA) is a continuously vibrational device for root canals irrigation, but its cleaning effectiveness has not been evaluated by any published reports. We were aiming to evaluate whether EA results in a greater intracanal smear layer and debris removal than conventional needle irrigation (NI) and passive ultrasonic irrigation (PUI). Twenty-seven single-rooted teeth were used. Canals were sized to R30 and irrigated with 3% sodium hypochlorite. Species were divided into three groups: Group 1: NI; Group 2: PUI; Group 3: EA. Canal walls were subjected to scanning electron microscopy. NI- and PUI-group canal cleanliness decreased from the coronal to apical direction (P < 0.05), except for EA group in the apical third. PUI removed more smear layer from the coronal and middle thirds than EA and NI (P < 0.05). PUI and EA were superior to NI regarding debris removal (P < 0.05). The smear layer and debris from the coronal and middle thirds were effectively removed with EA and PUI. More effective removal occurred from the apical third for EA compared with PUI (P < 0.05). Both methods removed smear layer and debris better than NI, providing a theoretical basis for the clinical application of EA.

scholarly journals Influence of the type of instrument used in passive ultrasonic irrigation on the smear layer removal capacity

2015 ◽  
Vol 5 (3) ◽  
pp. 28-33
Author(s):  
Carolina Filpo-Perez ◽  
Pablo Amoroso-Silva ◽  
Bruno Guimarães ◽  
Norberti Bernardineli ◽  
Clovis Bramante ◽  
...  
Keyword(s):  
Smear Layer ◽  
Passive Ultrasonic Irrigation ◽  
Layer Removal ◽  
Removal Capacity ◽  
Ultrasonic Irrigation

Does the Use of Use of Continuous or Passive Ultrasonic Irrigation Protocols Improve the Removal of Smear Layer? A Scanning Electron Microscopic Study

2021 ◽  
Author(s):  
Ramón Miguéns-Vila ◽  
Pablo Castelo-Baz ◽  
Saleta Aboy-Pazos ◽  
David Uroz-Torres ◽  
Pablo Álvarez-Nóvoa ◽  
...  
Keyword(s):  
Negative Pressure ◽  
Root Canal ◽  
Smear Layer ◽  
Electron Microscopic ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Scanning Electron Microscopic Study ◽  
Ultrasonic Irrigation ◽  
Conventional Irrigation ◽  
Scanning Electron

Abstract The aim of this study was to evaluate the effectiveness of smear layer removal after the use of different irrigation methods (passive ultrasonic irrigation [PUI], continuous ultrasonic irrigation [CUI], apical negative pressure irrigation and conventional irrigation) using the scanning electron microscopy (SEM) as an analytical tool. A total of 100 single-canal teeth were decoronated and randomly divided into five groups (n = 20) according to the irrigation method used: conventional irrigation with front outlet syringe, conventional irrigation with lateral outlet syringe, apical negative pressure irrigation (EndoVac), PUI with Irrisafe, and CUI with ProUltra PiezoFlow ultrasonic irrigation needle. Root canal preparation was performed with the ProTaper Gold system up to the F4 instrument and 5.25% NaOCl was used as an irrigant. After chemical-mechanical preparation, the roots were split longitudinally, and the coronal, middle and apical thirds examined. SEM digital photomicrographs were taken at ×1000 magnification to evaluate the amount of smear layer in each root canal third. CUI was more effective in removing the smear layer than the other irrigation protocols. However, none of the irrigation protocols were able to produce root canals completely free from smear layer.

Smear Layer Removal Using Passive Ultrasonic Irrigation and Different Concentrations of Sodium Hypochlorite

2020 ◽  
Vol 46 (11) ◽  
pp. 1738-1744
Author(s):  
Nayra Bittencourt Orlowski ◽  
Tamer Ferreira Schimdt ◽  
Cleonice da Silveira Teixeira ◽  
Lucas da Fonseca Roberti Garcia ◽  
Julia Menezes Savaris ◽  
...  
Keyword(s):  
Sodium Hypochlorite ◽  
Smear Layer ◽  
Passive Ultrasonic Irrigation ◽  
Layer Removal ◽  
Ultrasonic Irrigation

In vitro evaluation of smear layer removal of root canals by irradiation with Er:YAG laser after Ni-Ti rotary instrumentation

2003 ◽  
Author(s):  
Alexandre Capelli ◽  
Aldo Brugnera, Jr. ◽  
Fabio Heredia Seixas ◽  
Melissa A. Marchesan ◽  
Danilo M. Zanello Guerisoli ◽  
...  
Keyword(s):  
Er:Yag Laser ◽  
Smear Layer ◽  
In Vitro Evaluation ◽  
Layer Removal ◽  
Root Canals

scholarly journals Effectiveness of Ultrasonic and Manual Dynamic Agitation Techniques in Irrigant Penetration: An in vitro Study

2017 ◽  
Vol 8 (3) ◽  
pp. 207-212
Author(s):  
BS Suprabha
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Passive Ultrasonic Irrigation ◽  
Canal Irrigation ◽  
Root Canals ◽  
Lateral Canal ◽  
Group I ◽  
Working Length ◽  
Ultrasonic Irrigation

ABSTRACT Aim The aim is to compare the extent of irrigant penetration into root canals up to the working length and in simulated lateral canals after passive ultrasonic irrigation (PUI) and manual dynamic agitation (MDA). Materials and methods Root canals of 36 single-rooted extracted teeth were shaped using rotary files. Irrigation was done with 5.25% sodium hypochlorite and 17% ethylenediaminetetraaceticacid. Teeth were decalcified in 5% nitric acid. Lateral canals were created by inserting 10 K-files and then, the teeth were cleared using methyl salicylate. Samples were randomly divided into three groups of 12 teeth each: Group I — Control, group II — PUI, and group III — MDA. A contrast solution was delivered to the root canals during final irrigation and activation. Specimens were photographed using dental operating microscope, and the mean length of dye penetration was measured. Results Data were analyzed using analysis of variance (ANOVA), Tukey test, and repeated measures ANOVA. Passive ultrasonic irrigation group showed the highest penetration of the irrigant upto the working length followed by MDA. Manual dynamic agitation and PUI groups had equivocal results in lateral canal irrigation. Conclusion Passive ultrasonic irrigation technique is the most effective in delivering the irrigants up to the working length. The effectiveness of PUI and MDA is equivocal in lateral canal irrigation, and hence, MDA can be considered an alternative to PUI, in the case of nonavailability of PUI. Clinical significance The clinician can consider the use of MDA technique for irrigant agitation in root canals as an alternative to PUI, based on the extent of irrigant penetration. How to cite this article Khare M, Suprabha BS, Yadav A, Shenoy R, Boaz K, Rao A. Effectiveness of Ultrasonic and Manual Dynamic Agitation Techniques in Irrigant Penetration: An in vitro Study. World J Dent 2017;8(3):207-212.

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