Sonic irrigant activation for root canal disinfection: power modes matter!

Eggmann, Florin; Vokac, Yvonne; Eick, Sigrun; Neuhaus, Klaus W.

doi:10.1186/s12903-020-01088-5

Cited by 16 publications

(22 citation statements)

References 34 publications

(66 reference statements)

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“…In addition, Eggmann et al . ( 26 ) found a significant impact of sonic irrigation on microbial reduction in channels infected with E. faecalis , Candida albicans , Streptococcus gordonii , and Actinomyces oris . However, Plotino et al .…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial action of ozonated water and photodynamic therapy with sonic activation in root canals infected with Enterococcus faecalis

Nunes¹,

Novais²,

Garcia³

et al. 2022

J Clin Exp Dent

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Section: Discussionmentioning

confidence: 99%

Antimicrobial action of ozonated water and photodynamic therapy with sonic activation in root canals infected with Enterococcus faecalis

Nunes¹,

Novais²,

Garcia³

et al. 2022

J Clin Exp Dent

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“…The flexible and soft polyamide tip can move freely even in constrained and curved canals, and it enables sufficient disinfection without unwanted dentine preparation or alteration of the canal anatomy [17]. Although the efficiency can be controlled by the power settings of the sonic handpiece connected [58], caution must be exercised also with SAI because of the risk of instrument fracture [59] or apical irrigant extrusion causing postoperative pain [60][61][62].…”

Section: Discussionmentioning

confidence: 99%

Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study

et al. 2021

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Aim of the study was to develop a standardized model system to investigate endodontic irrigation techniques and assess the efficiency of different activation methods on the removal of hard tissue debris in complex root canal systems. Mesial roots of mandibular molars were firstly scanned by micro-computed tomography (µCT) and allocated to three groups of irrigant activation: sonic activation (EDDY, VDW, Munich, Germany), laser activation (AutoSWEEPS, FOTONA, Ljubljana, Slovenia) and conventional needle irrigation (control). Roots were fixed in individual 3D-printed holders to facilitate root canal enlargement under constant irrigation with NaOCl (5%). To enable standardized quantification of remaining debris, BaSO4-enriched dentine powder was compacted into the canals, followed by another µCT-scan. The final irrigation was performed using 17% ethylenediaminetetraacetic acid (EDTA) and 5% sodium hypochlorite (NaOCl) with the respective activation method, and the volume of remaining artificial debris was quantified after a final µCT-scan. The newly developed model system allowed for reliable, reproducible and standardized assessment of irrigation methods. Activation of the irrigant proved to be significantly more effective than conventional needle irrigation regarding the removal of debris, which persisted particularly in the apical third of the root canal in the control group. The efficiency of irrigation was significantly enhanced with laser- and sonic-based activation, especially in the apical third.

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“…Intensity levels of 10, 20 and 30 were employed (28–36 kHz). Sonic irrigant activation was performed with EDDY, coupled to an air scaler handpiece, the SONICflex 2003 L handpiece (Kavo), which was connected to a dental unit (Teneo; Dentsply Sirona, York, PA, USA). The air scaler handpiece used to drive the EDDY tips was employed at its highest power setting at all times (Eggmann et al, 2020). EndoVac was tested with the macrocannula and the microcannula.…”

Section: Methodsmentioning

confidence: 99%

“…The air scaler handpiece used to drive the EDDY tips was employed at its highest power setting at all times (Eggmann et al, 2020). 3.…”

Section: Irrigation Protocolsmentioning

confidence: 99%

“…UAI works at a frequency of 28 to 36 kHz and at an amplitude of 4 to 200 µm whereas sonic irrigation works at a frequency of up to 6000 Hz and at an amplitude of 240 µm. The sonic irrigation device EDDY (VDW) is a flexible, noncutting polyamide tip of 28 mm length with an ISO size of 20 and a 0.02 taper that can be coupled to an air scaler (Conde et al, 2017 ; Eggmann et al, 2020 ; Neuhaus et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

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Apical pressures generated by several canal irrigation methods: A laboratory study in a maxillary central incisor with an open apex

et al. 2021

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Aim A laboratory study to determine the apical pressure generated by seven canal irrigation methods in an anterior tooth with an open apex. Methodology Canal irrigation was performed on a 3D‐printed central maxillary incisor with an open apex (maximum diameter of 2.1 mm). Ultrasonically activated irrigation (UAI), sonic activation (EDDY), negative pressure irrigation (EndoVac), the self‐adjusting file (SAF) and the XP‐endo Finisher were employed at tooth length (TL), TL—1 mm, TL—2 mm and TL—3 mm. UAI was tested at three intensity levels additionally. Hydrodynamic irrigation with RinsEndo was performed in the pulp chamber, at the canal orifice, the coronal third, the middle of the canal and at TL. Er:YAG laser activation, at four frequency settings, was performed in the pulp chamber and at the orifice of the canal. The pressure of the fluid towards the canal terminus generated by activation was directly transferred to a pressure sensor with a range of 0 to 120 mmHg and a response time of ≤0.5 ms. The critical threshold for apical extrusion of the irrigant was set at 5.73 mmHg (lower limit of the central venous pressure: 5.88 ± 0.15 mmHg). Each experiment was repeated ten times. The tests were followed by descriptive analyses (maximum, mean, standard deviation, 95% confidence interval). Results EndoVac, the SAF, the XP‐endo Finisher, and UAI never exceeded the critical threshold at any insertion depth or intensity level. Er:YAG laser activation exceeded the critical threshold exclusively at frequency settings that varied from the manufacturer's recommendation. EDDY at TL and RinsEndo at any insertion depth exceeded the critical threshold in 100% of the measurements. EDDY at TL—1,—2, and—3 mm crossed the critical threshold in 30%, 10%, and 20% of the measurements, respectively. Conclusions In a simulated maxillary central incisor with an open apex, irrigation with EndoVac, Er:YAG laser activation, UAI, the SAF, and the XP‐endo Finisher generated apical pressures below the critical threshold of 5.73 mmHg. By contrast, using EDDY and RinsEndo for irrigation produced higher apical pressures that exceeded the critical threshold.

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Sonic irrigant activation for root canal disinfection: power modes matter!

Cited by 16 publications

References 34 publications

Antimicrobial action of ozonated water and photodynamic therapy with sonic activation in root canals infected with Enterococcus faecalis

Antimicrobial action of ozonated water and photodynamic therapy with sonic activation in root canals infected with Enterococcus faecalis

Debris Removal by Activation of Endodontic Irrigants in Complex Root Canal Systems: A Standardized In-Vitro-Study

Apical pressures generated by several canal irrigation methods: A laboratory study in a maxillary central incisor with an open apex

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