An in vitro study on cleaning efficiency of Mtwo and BioRaCe rotary nickel-titanium instruments

Abstract

Complete removal of smear layer and debris during the process of root canal therapy is of paramount importance in order to achieve the objectives of endodontic treatment. The aim of this study was to compare the amount of extruded debris and smear layer using two widespread rotary nickel-titanium instruments. Fifty eight freshly extracted human mandibular first molar mesial canals were randomly assigned into two groups. The root canals were instrumented using Mtwo (VDW, Munich, Germany), and BioRaCe (FKG Dentaire, LaChauxde-Fonds, Switzerland) NiTi instruments. Debris and smear layer from the apical thirds part during instrumentation were evaluated by scanning electron microscope. Then, the scores of remaining debris and smear layer were calculated for each group and compared. Data were then statistically analyzed using Mann-Whitney U test. There were significant differences in the amount of smear layer among two groups (P < 0.05). The greatest amount of apical debris was extruded by the BioRaCe group and the least by the Mtwo group. The results of the present study showed that, although both instrumentation techniques apically extruded debris and smear layer through the apical foramen, the Mtwo instruments induced less extruded debris and smear layer than the BioRaCe rotary systems.

 

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Zamiran, S. , Jahromi, M. , Fathi, M. and Moghaddam, G. (2013) An in vitro study on cleaning efficiency of Mtwo and BioRaCe rotary nickel-titanium instruments. Health, 5, 2045-2050. doi: 10.4236/health.2013.512277.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] [1] Sanghvi, Z. and Mistry, K. (2011) Design features of rotary instruments in endodontics. Journal of Ahmedabad Dental College and Hospital, 2, 6.
[2] Gambarini, G. and Laszkiewicz, J. (2002) A scanning electron microscopic study of debris and smear layer remaining following use of GT rotary instruments. International Endodontic Journal, 35, 422-427.
http://dx.doi.org/10.1046/j.1365-2591.2002.00495.x
[3] Bergmans, L., et al. (2001) Mechanical root canal preparation with NiTi rotary instruments: Rationale, performance and safety. American Journal of Dentistry, 14, 324-333.
[4] Gharai, S.R., et al. (2005) Comparison of generated forces and apical microleakage using nickel-titanium and stainless steel finger spreaders in curved canals. Journal of Endodontics, 31, 198-200.
http://dx.doi.org/10.1097/01.don.0000137648.77797.ea
[5] Young, G., Parashos, P. and Messer, H. (2007) The principles of techniques for cleaning root canals. Australian Dental Journal, 52, S52-S63.
[6] Foschi, F., et al. (2004) SEM evaluation of canal wall dentine following use of Mtwo and ProTaper NiTi rotary instruments. International Endodontic Journal, 37, 832-839. http://dx.doi.org/10.1111/j.1365-2591.2004.00887.x
[7] Drukteinis, S. and Balciuniene, I. (2006) A scanning electron microscopic study of debris and smear layer remaining following use of AET instruments and K-flexofiles. Stomatologija, 8, 70-75.
[8] Alodeh, M., Doller, R. and Dummer, P. (1989) Shaping of simulated root canals in resin blocks using the step-back technique with K-files manupulated in a simple in/out filing motion. International Endodontic Journal, 22, 107-117.
http://dx.doi.org/10.1111/j.1365-2591.1989.tb00908.x
[9] Von Fraunhofer, J., et al. (2000) The effect of root canal preparation on microleakage within endodontically treated teeth: An in vitro study. International Endodontic Journal, 33, 355-360.
http://dx.doi.org/10.1046/j.1365-2591.2000.00318.x
[10] Fayyad, D.M. and Elhakim Elgendy, A.A. (2011) Cutting efficiency of twisted versus machined nickel-titanium endodontic files. Journal of Endodontics, 37, 1143-1146.
http://dx.doi.org/10.1016/j.joen.2011.03.036
[11] Tasdemir, T., et al. (2010) An in vitro comparison of apically extruded debris using three rotary nickeltitanium instruments. Journal of Dental Sciences, 5, 121-125. http://dx.doi.org/10.1016/S1991-7902(10)60017-7
[12] Hankins, P.J. and ElDeeb, M.E. (1996) An evaluation of the canal master, balanced-force, and step-back techniques. Journal of Endodontics, 22, 123-130.
http://dx.doi.org/10.1016/S0099-2399(96)80288-3
[13] Schafer, E. and Schlingemann, R. (2003) Efficiency of rotary nickel-titanium K3 instruments compared with stainless steel hand K-Flexofile. Part 2. Cleaning effectiveness and shaping ability in severely curved root canals of extracted teeth. International Endodontic Journal, 36, 208-217.
http://dx.doi.org/10.1046/j.1365-2591.2003.00644.x
[14] Wu, M.K., Dummer, P. and Wesselink, P. (2006) Consequences of and strategies to deal with residual posttreatment root canal infection. International Endodontic Journal, 39, 343-356.
http://dx.doi.org/10.1111/j.1365-2591.2006.01092.x
[15] Wu, M., Sluis, L. and Wesselink, P. (2003) The capability of two hand instrumentation techniques to remove the inner layer of dentine in oval canals. International Endodontic Journal, 36, 218-224.
http://dx.doi.org/10.1046/j.1365-2591.2003.00646.x
[16] Siqueira, J. (2001) Aetiology of root canal treatment failure: Why well-treated teeth can fail. International Endodontic Journal, 34, 1-10.
http://dx.doi.org/10.1046/j.1365-2591.2001.00396.x
[17] Spangberg, L.S. and Haapasalo, M. (2002) Rationale and efficacy of root canal medicaments and root filling materials with emphasis on treatment outcome. Endodontic Topics, 2, 35-58.
http://dx.doi.org/10.1034/j.1601-1546.2002.20104.x
[18] Jeon, I.-S., et al. (2003) Smear layer production by 3 rotary reamers with different cutting blade designs in straight root canals: A scanning electron microscopic study. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, 96, 601-607.
http://dx.doi.org/10.1016/S1079-2104(03)00303-2
[19] Vaudt, J., Bitter, K. and Kielbassa, A.M. (2007) Evaluation of rotary root canal instruments in vitro: A review. Endodontics, 1, 189-203.
[20] Debelian, G. (2011) BioRaCe NiTi system: Biologically desirable apical sizes: Safely and efficiently. Stomatoloski Glasnik Srbije, 58, 44-50.
http://dx.doi.org/10.2298/SGS1101044D
[21] Schafer, E., Erler, M. and Dammaschke, T. (2006) Comparative study on the shaping ability and cleaning efficiency of rotary Mtwo instruments. Part 2. Cleaning effectiveness and shaping ability in severely curved root canals of extracted teeth. International Endodontic Journal, 39, 203-212.
http://dx.doi.org/10.1111/j.1365-2591.2006.01075.x
[22] Veltri, M., et al. (2005) A comparative study of Endoflare-Hero Shaper and Mtwo NiTi instruments in the preparation of curved root canals. International Endodontic Journal, 38, 610-616.
http://dx.doi.org/10.1111/j.1365-2591.2005.00989.x
[23] Schafer, E., Erler, M. and Dammaschke, T. (2006) Comparative study on the shaping ability and cleaning efficiency of rotary Mtwo instruments. Part 1. Shaping ability in simulated curved canals. International Endodontic Journal, 39, 196-202.
http://dx.doi.org/10.1111/j.1365-2591.2006.01074.x

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