Evaluation of apically extruded debris associated with several Ni–Ti systems
, , , , . Evaluation of apically extruded debris associated with several Ni–Ti systems. International Endodontic Journal.
Abstract
Aim
To evaluate the apical extrusion of debris associated with several root canal preparation systems in vitro.
Methodology
Forty-five
extracted human mandibular premolars with single canals and similar
lengths were used. The root canals were instrumented using ProTaper Next
(Dentsply Maillefer, Ballaigues, Switzerland), Twisted File
(SybronEndo, Orange, CA, USA) or WaveOne (VDW GmbH, Munich Germany).
Debris extruded apically during instrumentation was collected into
pre-weighed Eppendorf tubes. The Eppendorf tubes were then stored in an
incubator at 70 °C for 5 days. The Eppendorf tubes were weighed to
obtain the final weight of the Eppendorf tubes plus extruded debris.
Three consecutive weights were obtained for each tube. The groups were
compared using the Kruskal–Wallis one-way analysis of variance on Ranks
and Tukey's test.
Results
The
ProTaper Next group produced the highest mean extrusion value whilst
WaveOne produced less debris compared with all the other instruments (P > 0.05). There was a significant difference between the ProTaper Next and WaveOne group (P < 0.05).
Conclusions
Apically
extruded debris was associated with all instrumentation techniques. The
WaveOne system extruded less debris compared with the Twisted File and
ProTaper Next.
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