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Apically extruded debris with reciprocating single-file and full-sequence rotary instrumentation systems
Sebastian Bürklein1, Edgar Schäfer
1Central Interdisciplinary Ambulance in the School of Dentistry, University of Münster, Münster, Germany.
Journal of Endodontics
|May 19, 2012
Summary
Rotary nickel-titanium instruments produced less apically extruded debris than reciprocating single-file systems in this in vitro study. Reciprocating files, particularly Reciproc, generated significantly more debris.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Apical extrusion of debris during root canal preparation is a concern in endodontic treatment.
- Nickel-titanium (NiTi) rotary and reciprocating instrumentation systems are commonly used for root canal shaping.
Purpose of the Study:
- To compare the amount of apically extruded debris produced by two single-file reciprocating NiTi systems and two full-sequence rotary NiTi systems.
- To evaluate the time efficiency of these instrumentation systems.
Main Methods:
- Eighty human mandibular incisors were divided into four groups (n=20).
- Root canals were prepared using Reciproc, WaveOne (reciprocating), Mtwo, and ProTaper (rotary) systems.
- Apically extruded debris was collected using the Myers and Montgomery method and weighed.
Main Results:
- Reciprocating systems generated significantly more apically extruded debris than rotary systems (P < .05).
- The Reciproc system produced the most debris and was significantly faster than all other systems (P < .05).
- No significant difference in debris extrusion was found between the two rotary systems.
Conclusions:
- All tested NiTi instrumentation systems resulted in apical debris extrusion.
- Full-sequence rotary instrumentation systems were associated with less apical debris extrusion compared to single-file reciprocating systems.
