The purpose of this in vitro study was to assess the amount of apically extruded debris using rotary and reciprocating nickel-titanium instrumentation systems.
Eighty human mandibular central incisors were randomly assigned to 4 groups (n = 20 teeth per group). The root canals were instrumented according to the manufacturers’ instructions using the 2 reciprocating single-file systems Reciproc (VDW, Munich, Germany) and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland) and the 2 full-sequence rotary Mtwo (VDW, Munich, Germany) and ProTaper (Dentsply Maillefer, Ballaigues, Switzerland) instruments. Bidistilled water was used as irrigant. The apically extruded debris was collected in preweighted glass vials using the Myers and Montgomery method. After drying, the mean weight of debris was assessed with a microbalance and statistically analyzed using analysis of variance and the post hoc Student-Newman-Keuls test. The time required to prepare the canals with the different instruments was also recorded.
The reciprocating files produced significantly more debris compared with both rotary systems (P < .05). Although no statistically significant difference was obtained between the 2 rotary instruments (P > .05), the reciprocating single-file system Reciproc produced significantly more debris compared with all other instruments (P < .05). Instrumentation was significantly faster using Reciproc than with all other instrument (P < .05).
Under the condition of this study, all systems caused apical debris extrusion. Full-sequence rotary instrumentation was associated with less debris extrusion compared with the use of reciprocating single-file systems.
To read this article in full you will need to make a payment
Purchase one-time access:Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
One-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:Subscribe to Journal of Endodontics
Already a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
- Flare-ups in endodontics: I. Etiological factors.J Endod. 1985; 11: 472-478
- Midtreatment flare-ups.Dent Clin North Am. 1992; 36: 409-423
- Incidence of interappointment emergency associated with endodontic therapy.J Endod. 1992; 18: 509-511
- Incidence of post operative pain after intracanal procedures based on an antimicrobial strategy.J Endod. 2004; 28: 457-460
- Managing endodontic emergencies.J Am Dent Assoc. 1999; 122: 99-103
- Incidence of post operative pain after intracanal procedures based on an antimicrobial strategy.J Endod. 2002; 28: 457-460
- Apical extrusion of debris and irrigants using two hand and three engine-driven instrumentation techniques.Int Endod J. 2001; 34: 354-358
- Apically-extruded debris using the ProTaper system.Aust Endod J. 2005; 31: 21-23
- The effect of disruption of apical constriction on periapical extrusion.J Endod. 2005; 31: 533-535
- Alteration in the inherent metallic and surface properties of nickel-titanium root canal instruments to enhance performance, durability and safety: a focused review.Int Endod J. 2012; 45: 113-128
- Evaluation of cyclic flexural fatigue of M-wire nickel-titanium rotary instruments.J Endod. 2010; 36: 305-307
- Metallurgical characterization of a new nickel-titanium wire for rotary endodontic instruments.J Endod. 2009; 35: 1589-1593
- Assessment of apically extruded debris produced by the single-file ProTaper F2 technique under reciprocating movement.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010; 110: 390-394
- Alternating versus continuous rotation: a comparative study of the effect on instrument life.J Endod. 2010; 36: 157-159
- A comparison of canal preparations in straight and curved root canals.Oral Surg Oral Med Oral Pathol. 1971; 32: 271-275
- A comparison of weights of debris extruded apically by conventional filing and canal master techniques.J Endod. 1991; 17: 275-279
- Apical extrusion of debris using two hand and two rotary instrumentation techniques.J Endod. 1998; 24: 180-183
- Evaluation of apically extruded debris and irrigant using three instrumentation techniques.Endodontology. 2002; 14: 19-23
- Quantitative evaluation of the amount of apically extruded debris using three different rotary instrumentation systems.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2006; 101: 250-257
- Apical extrusion of intracanal bacteria following use of various instrumentation techniques.Int Endod J. 2008; 41: 1066-1071
- Apically extruded debris using three contemporary Ni-Ti instrumentation systems: an ex-vivo comparative study.J Dent Res. 2008; 19: 182-185
- Extrusion of debris after use of rotary nickel-titanium files with different pitch: A pilot study.Aust Endod J. 2009; 35: 65-69
- Evaluation of apically extruded debris in conventional and rotary instrumentation techniques.J Calif Dent Assoc. 2004; 32: 665-671
Bürklein S, Hinschitza K, Dammaschke T, Schäfer E. Shaping ability and cleaning effectiveness of two single-file systems in severely curved root canals of extracted teeth: Reciproc and WaveOne versus Mtwo and ProTaper. Int Endod J (in press).
- Comparative investigation of two rotary nickel-titanium instruments: ProTaper versus RaCe. Part 2. Cleaning effectiveness and shaping ability in severely curved root canals of extracted teeth.Int Endod J. 2004; 37: 239-248
- Shaping ability of four nickel-titanium rotary instruments in simulated S-shaped canals.J Endod. 2009; 35: 883-886
- The sealing ability and retention characteristics of mineral trioxide aggregate in a model of apexification.J Endod. 2002; 28: 386-390
- Debris and irrigant extrusion potential of 2 rotary systems and irrigation needles.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011; 112: e31-e35
- Complications during root canal irrigation.Endod Topics. 2009; 16: 27-63
- Relationship between the size of patency file and apical extrusion of sodium hypochlorite.Indian J Dent Res. 2009; 20: 426-430
- The effect of maintaining apical patency on periapical extrusion.J Endod. 2001; 27: 696-698
- Mechanical preparation of root canals: shaping goals, techniques and means.Endod Topics. 2005; 10: 30-76
- Apical patency: fact and fiction—a myth or a must? A contribution to the discussion.ENDO (Lond Engl). 2009; 3: 285-307
Published online: April 09, 2012
© 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.