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Apically extruded dentin debris by reciprocating single-file and multi-file rotary system
Gustavo De-Deus1, Aline Neves, Emmanuel João Silva
1UNIGRANRIO, Grande Rio University, Duque de Caxias, RJ, 22061-030, Brazil, endogus@gmail.com.
Clinical Oral Investigations
|June 22, 2014
Summary
Reciprocating single-file systems (WaveOne, Reciproc) showed improved control of apically extruded debris compared to conventional multi-file rotary systems. Hand instrumentation extruded the most debris.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Apical extrusion of debris during root canal preparation is a significant clinical concern.
- Extruded debris can introduce bacteria and irritants into periapical tissues, potentially causing inflammation and flare-ups.
Purpose of the Study:
- To compare the apical extrusion of debris produced by two single-file reciprocating systems (WaveOne and Reciproc).
- To evaluate these systems against a conventional multi-file rotary system and hand instrumentation.
Main Methods:
- Eighty mesial roots of lower molars were instrumented using four techniques: hand-file, ProTaper (multi-file rotary), WaveOne (reciprocating), and Reciproc (reciprocating).
- A double-chamber collector apparatus was used to quantify apically extruded debris.
- Statistical analysis was performed for comparisons between groups.
Main Results:
- No significant difference in debris extrusion was observed between the WaveOne and Reciproc systems.
- Both reciprocating systems extruded significantly less debris than the conventional multi-file rotary system (ProTaper).
- Hand instrumentation resulted in significantly greater apical extrusion of debris compared to all other tested techniques.
Conclusions:
- Single-file reciprocating systems (WaveOne and Reciproc) demonstrate superior control over apical debris extrusion.
- These findings suggest that reciprocating systems offer a more favorable outcome in minimizing apical extrusion, potentially reducing periapical irritation.
