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I 33 clinical technique _ WaveOne I roots1_2011 irrigation as a major determinant of endodontic success. Once it is fully appreciated that shaping and cleaning the root-canal system are irrevocably intertwined, then endodontics will be easier for all and available to all, and WaveOne will truly become the root-canal preparation instrument of the future. Drs Julian Webber, Pierre Machtou, Wilhem Pertot, Sergio Kuttler, Clifford Ruddle and John West where involvedinthedevelopment,fieldtestingandresearch associatedwithWaveOne._ _References 1.Sjogren U,Figdor D,Persson S,Sundqvist G.Influence of in- fection at the time of root filling on the outcome of endodon- tic treatment of teeth with apical periodontitis. Int Endod J 1997; 30(5): 297–306. 2.Schilder H. Cleaning and shaping the root canal. Dent Clin Amer 1974; 18(2): 269–96. 3.West JD. Endodontic predictability—“Restore or remove: how do I choose?” In: Cohen M, ed. Interdisciplinary Treat- ment Planning: Principles, Design, Implementation. Quin- tessence Publishing Co., 2008:123–64. 4.Roane JB,Sabala CL,Duncanson MG.The“balanced force” concept for instrumentation of curved canals. J. Endod 1985; 11(5): 203–11. 5.Johnson E, Lloyd A, Kuttler S, Namerow K. Comparison be- tween a novel nickel titanium alloy and 508 Nitinol on the cyclic fatigue life of Profile 25/.04 rotary instruments.J En- dod 2008; 34(11): 1406–9. 6.WaliaHM,BrantleyWA,GersteinH.Aninitialinvestigationon the bending and torsional properties of Nitinol root canal files. J Endod 1998; 14(7): 340–51. 7.Reddy SA, Hicks ML. Apical extrusion of debris using two hand and two rotary instrumentation techniques. J Endod 1998; 249(3): 180–3. 8.Pettiette MT,Delano EO,Trope M.Evaluation of success rate of endodontic treatment performed by students with stain- less steel K files and nickel titanium hand files. J Endod 2001; 27(2): 124–7. 9.Letters S et al.A study of visual and blood contamination on reprocessed endodontic files from general dental practice. Brit Dent J 2005; 199: 522–5. 10. Schneider K, Korkmaz Y,Addicks K, Lang H et al. Prion Pro- tein(PrP)inhumanteeth:anunprecedentedpointertoPrP’s function. J Endod 2007; 33(2): 110–3. 11.Department of Health (UK).Advice for dentists on the re-use of endodontic instruments and variant Creutzfeldt-Jacob Disease (vCJD).April 2007. 12. RuddleCJ.Endodonticdisinfection:tsunamiirrigation.Endo Prac. 2008;11:7–16. 13.Kuttler S, Bonilla C, Perez R, Hardigan P. Evaluation of re- maining canal wall thickness and center ability after instru- mentation with a new reciprocating system. 2011a. In press. 14.Webber J, Kuttler S, Bonilla C, Perez R, Hardigan P. Evalua- tion of remaining canal wall thickness and center ability af- ter instrumentation with WaveOne reciprocating system vs rotary BioRace NiTi system. 2011b. In press. 15.PertotW,MachtouM,KuttlerS,BonillaC,Perez,R,Hardigan P. Evaluation of remaining canal wall thickness and center ability after instrumentation with WaveOne reciprocating system vs Revo-S rotary NiTi system. 2011. In press. 16. Machtou P, Kuttler S, Bonilla C, Pertot W, Perez R, Hardigan P.Evaluation of canal wall cleanliness after instrumentation with four nickel titanium rotary file systems and one recip- rocating system. 2011. In press. 17.McLean R, Kuttler S et al. Evaluation of the flexibility of 4 nickel titanium rotary file systems and one reciprocating file system. 2011. In press. 18.Coil J, Shen Y, Kuttler S, Bonilla C, Ruddle C,West J, Rigob- erto P, Hardigan P. 2011. In press. 19.Armando L, Kuttler S, Bonilla C,Webber J, Machtou P, Per- tot W, Perez R, Hardigan P. Comparison of the extruded de- bris of a new nickel titanium reciprocating file versus four conventional rotary systems. Jan 2011. In press. Dr Julian Webber has been a practising endodon- tist in London,England,for over 30 years.He was the first UK dentist to receive a Master’s degree in Endo- dontics from a university in the USA (Northwestern University Dental School, Chicago) in 1978.He has lectured extensively and given many hands-on courses on endodontics worldwide.He has written in numerous peer- reviewed journals and contributed numerous chapters in endodontic texts.DrWebber is a former President of the British Endodontic Society,a fac- ulty member of the Pacific Endodontic Research Foundation in San Diego,Honorary Professor at the University of Belgrade,Serbia,and an Honorary Member of the Ukrainian Medical and Stomatolog- icalAcademy.He is a fellow of the International College of Dentists and an active member of the AmericanAssociation of Endodontists.He is the editor of Endodontic Practice (UK) and a board member of many prestigious dental journals. Dr Julian Webber The Harley Street Centre for Endodontics 121 Harley Street LondonW1G 6AX England jw@julianwebber.com www.roottreatmentuk.com _about the lead author roots