The Self-Adjusting File Instrumentation Results in Less Debris Extrusion Apically When Compared to WaveOne and ProTaper NEXT

A. M. Pawar, M. G. Pawar, Z. Metzger, and S. R. Kokate

Journal of Conservative Dentistry. 2015 March-April; 8(2):89-93.


AIM: The present ex vivo study aimed to evaluate the debris extrusion after instrumenting the root canals by three different files systems.

MATERIALS AND METHODS: Sixty extracted human mandibular premolars with single canals were selected and randomly divided into three groups (n = 20) for instrumentation with three different files. Group 1: WaveOne (primary) single reciprocating file (WO; Dentsply Maillefer, Ballaigues, Switzerland) (25/08), Group 2: Self-adjusting file (SAF; ReDent-Nova, Ra'anana, Israel) (1.5 mm), and Group 3: ProTaper NEXT X1 and X2 (PTN; Dentsply Tulsa Dental, Tulsa, OK) (25/06). Debris extruding by instrumentation were collected into pre-weighed Eppendorf tubes. These tubes were then stored in an incubator at 70°C for 5 days. The tubes were then weighed to obtain the final weight, with the extruded debris. Statistical analysis for the debris extruded apically was performed using one-way analysis of variance and post hoc Tukey's test.

RESULTS: The statistical analysis showed a significant difference between all the three groups tested (P < 0.01). The following post hoc Tukey's test confirmed that Group 2 (SAF) exhibited significantly least (P < 0.01) debris extrusion between the three groups tested.

CONCLUSIONS: The SAF resulted in significantly less extrusion of debris when compared to reciprocating WO and rotary PTN.


The full article is available online: Journal of Conservative Dentistry

Pawar debris JCD2015


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