Cutting efficiency of different cross sectional design protaperrotary instruments - in-vitro study
DOI:
https://doi.org/10.56511/JIPBS.2016.v3.i01.pp116-122Abstract
Aim:The purpose of this study is to assess the effect of different cross sectional designs along with variable metallurgical modifications on the cutting efficiency of rotary nickel titanium on root canal dentine. Methodology: A total of forty mesiobuccal root canals in mesial roots of mandibular first permanent molars with a curvature ranging between 25o to 35oCwere selected for this study. Canals were randomly distributed into two groups, 20 canals were prepared with ProTaper GOLD rotary system, and the other 20 prepared with the ProTaper NEXT system. Teeth were marked and weighed before and after instrumentation with delta weight (Δ wt = wt pre – wt post) recorded and listed in tables for statistical analysis. Results: Samples instrumented with ProTaper GOLD showed increased weight loss (Δ wt) with no significant difference with the ProTaper NEXT. Conclusion: A cross section modification for the ProTaper NEXT didn’t improve the cutting efficiency as was expected; in addition metallurgical treatments of the Protaper GOLD showed good cutting efficiency.
Keywords:
Cross section, Cutting efficiency, ProtaperDownloads
References
Henry SY and Von Stebut J: Cutting effieciency loss of root canal instruments due to bulk plastic transformation. J Endod; 1994. 20: 367-72.
Felt RA, Moser JB and Heuer MA: Flute design of endodontic instruments & its influence on the cutting efficiency. J Endod; 1982. 8: 253-259.
Crumpton J L and McClanahan C S:, Endodontic rotary nickel-titanium instrument systems. Clinical Update Naval Postgraduate Dental School National Naval Dental Center 8901 Wisconsin Ave Bethesda, Maryland 20889-5602 http://nnd40.med.navy.mil/edresources/ index.htm. 2003; 25, 8: 15-17.
Webber J, Moser JB and Heuer MA: A method of determination of cutting efficiency of root canal instruments in linear motion. J Endod; 1980. 6: 829-834.
Felt RA, Moser JB and Heuer MA: Flute design of endodontic instruments & its influence on the cutting efficiency. J Endod; 1982. 8: 253 - 259.
Anderson JV, Cocran JF and Criag RG: Cutting ability of square versus Rhombus cross-sectional endodontic files. J Endod; 1985. 11: 212-217.
Miserendino LJ, Brantley WA, Walla HD and Gerstein H: Cutting efficiency of endodontic instrument. Part IV: Comparison of hybrid and traditional instrument design. J Endod; 1988. 14: 451-454.
Lloyd AL: Root canal instrumentation with profile instruments. Endod Topics; 2005. 10: 150-54.
Thomson SA and Dummer PMH: Shaping ability of Quantec Series 2000 rotary nickel titanium instruments in stimulated root canals. Part 1. Int. Endod J; 1998(a). 31: 259-67.
HaapasaloM&Shen YA: Evolution of nickel – titanium instruments: from past to future. Endodontic topics 2013, 29, 3 – 17 .
http://www.tulsadentalspecialties.coc/.
Schneider SW: A comparison of canal preparation in straight and curved canals. Oral Surg 1971; 32: 271-5.
Stenman E and Spangberg LSW: Machining efficiency of endodontic files a new methodology. J Endod; 1990. 16: 151157.
Gawdat SI: Evaluation of the cutting efficiency, shaping ability and wear of a new Tin coated rotary Ni-Ti files. M.D. Thesis, Faculty of Oral and Dental Medicine, Cairo University, 2008.
Nagy MM: Comparison of new rotary Ni-Ti systems in preparation of curved root canals. M.D. Thesis, Faculty of Oral and Dental Medicine, Ain Shams University, 2008.
Miserendino LJ, Moser JB, Heuer MA and Osetek EM: Cutting efficiency of endodontic instrument. Part I: A quantitative comparison of tip and flute regions. J Endod; 1985. 11: 435-442.
Stenman E and Spangberg LSW: Machining efficiency of endodontic K-files and Hedstrom files. J. Endod; 1990. 16: 375-382.
Cunningham CJ and Senia ES: A three dimensional study of canal curvature in the mesial roots of mandibular molars. J Endod; 1992. 18: 294-300.
Felt RA, Moser JB and Heuer MA: Flute design of endodontic instruments & its influence on the cutting efficiency. J Endod; 1982. 8: 253-259.
Miserendino LJ, Moser JB, Heuer MA, Osetek EM.: Cutting efficiency of endodontic instruments. Part II: Analysis of tip design. J Endod; 1986. 12: 8-12.
Gulabivala K, Holt R and Long B an invitro comparison of thermo placticizedgut taperchaobturation techniques with cold lateral condensation. Endod Dent Traumatol 1998; 14: 262-9.
Zmener O and Banegas G. clinical experience of root conduct fillinig by ultrasonic condensation of gutta-percha. Endod Dent Traumatol. 1999; 15: 57-9.
Cunningham CJ and Senia ES: A three dimensional study of canal curvature in the mesial roots of mandibular molars. J Endod; 1992. 18: 294-300.
Wu M and Wesselink PR: Efficiency of three techniques in cleaning the apical portion of curved root canals. Oral Surg Oral Med Oral Pathol; 1995. 79: 492-96.
Tepel J, Schäfer E, Hoppe W. Root canal instruments for manual use: cutting efficiency and instrumentation of curved canals. IntEndod J 1995: 28: 68 – 76.
Haïkel Y, Serfaty R, Lwin TT, Allemann C. Measurement of the cutting efficiency of endodonticinstruments: a new concept. J Endod 1996: 22:651 – 656.
Oliet S, Sorin SM. Cutting efficiency of endodontic reamers. Oral Surg Oral Med Oral Pathol 1973: 36: 243 – 252.
Shoji Y. Studies on the mechanism of the mechanical enlargement of root canals. J Nihon UnivSch Dent 1965: 7: 71 – 78.
Yguel-Henry S, von Stebut J. Cutting efficiency loss of root canal instruments due to bulk plastic deformation, surface damage, and wear. J Endod 1994: 20: 367 – 372.
Shen Y, Haapasalo M. Three-dimensional analysis of cutting behavior of nickel – titanium rotary instruments by microcomputed tomography. J Endod 2008: 34: 606 – 610.
Bui TB, Mitchell JC, Baumgartner JC. Effect of electropolishingProFile nickel – titanium rotary instruments on cyclic fatigue resistance, torsional resistance, and cutting efficiency. J Endod 2008: 34: 190 – 193.
Rapisarda E, Bonaccorso A, Tripi TR, Fragalk I, Condorelli GG. The effect of surface treatments of nickel – titanium files on wear and cutting efficiency. Oral Surg Oral Med Oral Pathol Oral RadiolEndod 2000: 89: 363 – 368.
Vinothkumar TS, Miglani R, Lakshminarayananan L. Influence of deep dry cryogenic treatment on cutting efficiency and wear resistance of nickel – titanium rotary endodontic instruments. J Endod, 2007; 33: 1355 – 1358.
Yoshimine Y, Ono M and Akamine A: The shaping effects of three nickel titanium instruments in simulated S-shaped canal. J Endod 2005; 31(5): 373-375.
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