An in vitro study of apical extrusion of sodium hypochlorite during endodontic canal preparation

Brown, David C.; Moore, B. Keith; Brown, Cecil E.; Newton, Carl W.

doi:10.1016/s0099-2399(06)81108-8

Cited by 89 publications

(73 citation statements)

References 7 publications

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“…Nonetheless, the specimens were affected equally. Another method of evaluating irrigant extrusion is by measuring the volume of irrigant extruded from the canal 30,31) . However, neither method addresses a potential confounder variable that is the influence of the apical anatomy on the potential extrusion of the irrigating solution.…”

Section: Discussionmentioning

confidence: 99%

“…Although the recommended side-vented needle was placed away from the apex, extrusion occurred in 4 specimens. This can be attributed to the use of positive pressure during irrigant delivery 15,28,30,36) . However, the use of negative pressure-controlled irrigation prevented extrusion beyond the apex as reported in previous studies 16,31,37,38) .…”

Section: Discussionmentioning

confidence: 99%

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Irrigation effectiveness of continuous ultrasonic irrigation system: An <i>ex vivo</i> study

Jamleh

Suda

Adorno

2018

Dental Materials Journal

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This study evaluated the irrigation extrusion and smear layer (SL) removal of continuous ultrasonic irrigation (CUI). Forty root canals were shaped, embedded in warm sterile saline agar colored with 1% acid red, and distributed into four groups; three groups had the final irrigation sequence of sodium hypochlorite and EDTA solutions performed by using syringe irrigation (SI), EndoVac (EV), and CUI, respectively. Group 4 had the canals ultrasonically irrigated with saline (CUIS). Irrigant extrusion was verified by a color change of the agar. The SL was evaluated under scanning electron microscope. Irrigant extrusion was observed in two and four teeth in the CUI and SI, respectively, whilst none had irrigant extruded in the EV. In term of SL, the CUI was comparable to EV at 1 and 3 mm but different to SI at 1 mm. Although CUI might clean the root canal system effectively, it was unable to avoid irrigant extrusion.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Irrigation effectiveness of continuous ultrasonic irrigation system: An <i>ex vivo</i> study

Jamleh

Suda

Adorno

2018

Dental Materials Journal

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“…The HF were associated with higher amount of debris extrusion apically in this study, and this is in agreement with the existing literature. 8,11,12,[21][22][23][24] Our results showed that rotary files used in crown-down fashion extruded more debris than the SAF system. This may be detrimental to the underlying stem cells and lead to alterations in the dental germ, such as hypoplasia, morphological alteration on the dental crown, or total arrest of radicular formation.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, as these files have smaller taper (0.02 taper) and less space is available to flush out debris coronally, causing it to be pumped out through the apical foramen. 22,23 The rotary PTU files possess convex triangular cross-section, a noncutting safety tip, and a flute design with multiple tapers. The files with similar crosssection are reported to cut dentin effectively.…”

Section: Discussionmentioning

confidence: 99%

Extrusion of Debris from Primary Molar Root Canals following Instrumentation with Traditional and New File Systems

Thakur

Kfir

Neelakantan

2017

The Journal of Contemporary Dental Practice

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Introduction:To assess the amount of debris extruded apically during instrumentation of distal canals of extracted primary molars by three instrument systems [ProTaper Universal (PTU), ProTaper NEXT (PTN), and self-adjusting file (SAF)] compared with conventional stainless steel hand K-files (HF, control). Materials and methods:Primary mandibular molars (n = 120) with a single distal canal were selected and randomly divided into four groups (n = 30) for root canal instrumentation using group I, HF (to size 0.30/0.02 taper), group II, PTU (to size F3), group III, PTN (to size X3), and group IV, SAF. Debris extruded during instrumentation was collected in preweighed Eppendorf tubes, stored in an incubator at 70°C for 5 days and then weighed. Statistical analysis was performed by one-way analysis of variance (ANOVA), followed by Turkey's post hoc test (p = 0.05).Results: All the groups resulted in extrusion of debris. There was statistically significant difference (p < 0.001) in the debris extrusion between the three groups: HF (0.00133 ± 0.00012), PTU (0.00109 ± 0.00005), PTN (0.00052 ± 0.00008), and SAF (0.00026 ± 0.00004). Conclusion:Instrumentation with SAF resulted in the least debris extrusion when used for shaping root canals of primary molar teeth. Clinical significance: Debris extrusion in primary teeth poses an adverse effect on the stem cells and may also alter the permanent dental germ. Debris extrusion is rarely reported for primary teeth and it is important for the clinician to know which endodontic instrumentation leads to less extrusion of debris. Extrusion of Debris from Primary Molar Root

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“…Therefore, careful irrigation techniques in such cases will ensure that only minimal amounts of the NaOCl solution will be extruded beyond the apical foramen. 22,23 When EDTA was added to NaOCl, a significant reduction in detectable mercury in solution was evident. EDTA is a chelating agent commonly used in medicine.…”

Section: Discussionmentioning

confidence: 99%

In Vitro Comparative Evaluation of Effect of Different Irrigating Solutions on Mercury Released From Dental Amalgam

Chandak¹,

Patidar²,

Chandak³

et al. 2014

IOSRJDMS

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An in vitro study of apical extrusion of sodium hypochlorite during endodontic canal preparation

Cited by 89 publications

References 7 publications

Irrigation effectiveness of continuous ultrasonic irrigation system: An <i>ex vivo</i> study

Irrigation effectiveness of continuous ultrasonic irrigation system: An <i>ex vivo</i> study

Extrusion of Debris from Primary Molar Root Canals following Instrumentation with Traditional and New File Systems

In Vitro Comparative Evaluation of Effect of Different Irrigating Solutions on Mercury Released From Dental Amalgam

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